Soundbars / Compare

Klipsch Flexus Core 300 vs Sonos Arc Ultra

A

Product A: Klipsch

Flexus Core 300

52 of 98 known

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B

Product B: Sonos

Arc Ultra

60 of 98 known

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Every value links to where we found it.

Only differences

AKlipsch Flexus Core 300

BSonos Arc Ultra

Audio system

9 of 17 differ

System channel configurationiMaker-stated channel layout of the exact package, such as 5.1.2. This can include virtual channels. It is not a count of physical drivers. Optional speakers do not count.

5.1.22Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Speaker system: 5.1.2 Dolby Atmos Soundbar.

9.1.42Owner's manualsonos.com/en-us/guides/arcultraRead 8 October 2026Maker-advertised standalone spatial-audio layout. Includes virtual channels. It is not the physical driver layout. RTINGS describes the physical layout as 5.1.2.

Physical drivers in the packageiCount of physical active speaker drivers across the supplied bar, subwoofer and rear speakers. Passive radiators, microphones and virtual channels do not count. A coaxial driver, such as KEF Uni-Q, counts once, as makers count it.

131Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page text counts four front-firing 2.25 in drivers, one 0.75 in horn-loaded tweeter, two 2.25 in up-firing Dolby Atmos drivers, two 2.25 in side-firing drivers and four built-in 4 in subwoofer drivers (two pairs). Total 13.

142Owner's manualsonos.com/en-us/guides/arcultraRead 8 October 2026Standalone reference package has no supplied external subwoofer or rear enclosures. Same active drivers as the bar.

Physical drivers in the bariCount of physical active speaker drivers in the soundbar alone. Passive radiators and virtual channels do not count. A coaxial driver, such as KEF Uni-Q, counts once, as makers count it.

131Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Same driver inventory. All drivers are in the bar. No subwoofer or rear speaker is supplied.

142Owner's manualsonos.com/en-us/guides/arcultraRead 8 October 2026Active drivers only. Seven tweeters, six midwoofers and one Sound Motion woofer. Two membranes and four motors do not make the Sound Motion assembly multiple drivers.

Up-firing drivers in the packageiPhysical active drivers explicitly firing upwards across the supplied package. Virtual height channels and passive radiators do not count. A driver that fires upwards only when the bar is wall mounted is not counted.

21Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page text names two up-firing Dolby Atmos drivers. The spec sheet table also lists the four 4 in woofers under its up-firing row. That grouping is not clear, so only the two Atmos drivers are counted.

22Owner's manualsonos.com/en-us/guides/arcultraRead 8 October 2026

Driver layoutiPublished physical driver layout for the supplied components. A row names one driver type in one component. Do not translate channel count into driver count.

AKlipsch Flexus Core 300

Component	Driver type	Count	Diameter (mm)	Orientation
Soundbar	Paper cone driver	4	57.15	Front-firing
Soundbar	Horn-loaded tweeter	1	19.05	Front-firing
Soundbar	Discrete full-range Dolby Atmos driver	2	57.15	Up-firing
Soundbar	Paper cone driver	2	57.15	Side-firing
Soundbar	High-output paper cone built-in subwoofer driver	4	101.6	Not available

Source1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Sizes are the page and spec sheet inch figures converted at 25.4 mm per inch. The spec sheet narrative says 2.5 in side-firing drivers while its table and the page say 2.25 in. The table figure is stored. Orientation of the four 4 in woofers is not stated clearly.

BSonos Arc Ultra

Component	Driver type	Count	Orientation
Soundbar	Silk-dome tweeter	5	Angled
Soundbar	Silk-dome tweeter	2	Up-firing
Soundbar	Midwoofer	6	Not available
Soundbar	Sound Motion woofer	1	Not available

Source2Owner's manualsonos.com/en-us/guides/arcultraRead 8 October 2026Manual and product-page Audio specifications. Five angled tweeters and two up-firing tweeters split the published seven. No diameters are published.

Separate subwoofer includediA separate powered subwoofer is supplied with the reference package. A built-in woofer does not count.

No2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Included accessories list has no subwoofer. The Flexus subwoofers are separate purchases.

No1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Complete standalone-bar box contents. Separate Sonos subwoofers are optional.

Included subwoofer connectioniAudio link used by the supplied separate subwoofer. Wireless subwoofers can still require an AC power cable.

Not available

Not available

Included subwoofer driver diameteriPublished diameter of an active driver in the supplied separate subwoofer. Do not use enclosure size or passive radiator size.

Not available

Not available

Rear speakers includediCount of separate rear speaker enclosures supplied with the reference package. Detachable bar ends count when usable as rears. Optional rear speakers do not count.

02Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Included accessories list has no rear speakers. The Flexus surround speakers are separate purchases.

01Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Complete standalone-bar box contents. Rear speakers are optional.

Included rear speaker connectioniAudio link to the supplied rear speaker enclosures. Their power connection is separate.

Not available

Not available

Detachable rear speakersiThe bar has supplied detachable end sections usable as separate rear speakers.

No2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Single-piece bar. The included accessories list has no detachable section.

Not available

Compatible optional subwoofersiMaker-named compatible additional subwoofer models. These do not contribute to the reference package layout, dimensions or measurements.

Flexus Sub 100, Flexus Sub 2001Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page offers the Flexus Sub 100 and Sub 200 as expansions. The manual says up to two wireless subwoofers can be added.

Sub (Gen 1), Sub (Gen 2), Sub (Gen 3), Sub 4, Sub Mini10Maker product pagesupport.sonos.com/en-us/article/set-up-your-sonos-subRead 8 October 2026Sub 1/2/3 support all home theater speakers. Sub 4 supports all except Playbar/Playbase. Sub Mini has separate support list. Arc Ultra dual-Sub setup requires two Sub 4/Gen 3 units, not Gen 1/2.11Maker product pagesupport.sonos.com/en-us/article/sonos-products-that-support-sub-miniRead 8 October 2026Home Theater list explicitly includes Arc Ultra, Beam (Gen 2) and Ray for Sub Mini.

Compatible optional rear speakersiMaker-named compatible additional rear speaker models. These do not contribute to the reference package layout, dimensions or measurements.

Flexus Surr 100, Flexus Surr 2001Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page offers the Flexus Surr 100 and Surr 200 as expansions. The manual says up to two wireless surround speakers can be added.

Era 100, Era 30013Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Optional Sonos rear-speaker sets on the product page. Supplied package remains the standalone bar.

Total RMS audio output poweriMaker-stated RMS or rated continuous amplifier output for the exact supplied package. Peak or unspecified maximum claims do not qualify. Distortion, load and rating conditions belong in the source note. Power consumption is separate.

Not available

Not available

Total peak audio output poweriMaker-stated peak or maximum amplifier output for the exact supplied package. This is separate from RMS or continuous output and from electrical consumption. Rating conditions belong in the source note.

Not available

Not available

Published frequency response lower limitiMaker-published lower limit for the exact supplied package. Tolerance and test conditions belong in the source note. Reviewer extension measurements are separate.

43Hz2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Frequency response 43 Hz - 20 kHz. No tolerance or test condition is given.

Not available

Published frequency response upper limitiMaker-published upper limit for the exact supplied package. Tolerance and test conditions belong in the source note.

20kHz2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Frequency response 43 Hz - 20 kHz. No tolerance or test condition is given.

Not available

Audio formats

6 of 9 differ

Dolby AtmosiExplicit support for Dolby Atmos playback. Transport codec and connection restrictions belong in source notes.

Yes1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page: processes Dolby Atmos with built-in up-firing speakers.

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Dolby Atmos via Dolby Digital Plus uses ARC or eARC. Dolby TrueHD and Dolby MAT Atmos require eARC.

DTS:XiExplicit support for DTS:X playback. Virtual surround processing alone does not establish DTS:X decoding.

Yes2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Text: DTS:X decoding onboard, decoding major audio formats via HDMI input.

No15Press articletechradar.com/televisions/soundbars/sonys-new-dolby-atmos-soundbar-does-all-the-things-the-sonos-arc-ultra-doesnt-for-a-lower-price-and-its-expandable-for-home-theater-like-sonos-tooRead 8 October 2026Explicitly states DTS:X is unsupported by Sonos.

Supported audio formatsiAudio formats explicitly decoded by the device. Codec and connection restrictions belong in source notes. Bluetooth codecs and music-file formats are separate.

PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS, DTS-HD, DTS:X3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Decoding and playback modes page: PCM (LPCM up to 8 channels), Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS, DTS-HD and DTS:X. The page does not tie each format to one input.

Stereo PCM, Dolby Digital, DTS Digital Surround, Dolby Digital Plus, Dolby Atmos (Dolby Digital Plus), Dolby Atmos (Dolby TrueHD), Dolby TrueHD, Multichannel PCM, Dolby Multichannel PCM, Dolby Atmos (Dolby MAT)4Maker product pagesupport.sonos.com/en-us/article/supported-home-theater-audio-formatsRead 8 October 2026Current Sonos app. Dolby TrueHD, multichannel PCM and MAT require eARC. DTS Digital Surround is not an indication of a licensed decoder.

Audio formats by connectioniExplicitly supported audio decoding combinations. Max input channels counts decoded input audio channels, including LFE. A 5.1 layout has 6 channels and 7.1 has 8. Output speaker layouts and Atmos objects do not count. Atmos over Dolby Digital Plus and over Dolby TrueHD are separate rows. Format support on one input does not prove support on another.

AKlipsch Flexus Core 300

Not available

BSonos Arc Ultra

Connection	Format
HDMI ARC	Stereo PCM
HDMI ARC	Dolby Digital
HDMI ARC	DTS Digital Surround
HDMI ARC	Dolby Digital Plus
HDMI ARC	Dolby Atmos (Dolby Digital Plus)
HDMI eARC	Stereo PCM
HDMI eARC	Dolby Digital
HDMI eARC	DTS Digital Surround
HDMI eARC	Dolby Digital Plus
HDMI eARC	Dolby Atmos (Dolby Digital Plus)
HDMI eARC	Dolby TrueHD
HDMI eARC	Dolby Atmos (Dolby TrueHD)
HDMI eARC	Multichannel PCM
HDMI eARC	Dolby Multichannel PCM
HDMI eARC	Dolby Atmos (Dolby MAT)

Source4Maker product pagesupport.sonos.com/en-us/article/supported-home-theater-audio-formatsRead 8 October 2026Ray has an optical audio input. ARC/eARC combinations are stated for Arc Ultra and Beam (Gen 2). Optical adapter paths for the HDMI bars are not treated as native optical ports.

Music file formatsiPublished local or network music-file playback formats. Playback route and app restrictions belong in source notes.

MP32Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026USB input row: system updates and playback of MP3 files.

MP3, MP4, M4A, WMA, AAC, HE-AAC, OGG, FLAC, ALAC, AIFF, WAV5Maker product pagesupport.sonos.com/en-us/article/supported-audio-formats-for-sonos-music-libraryRead 8 October 2026Local network music-library playback through the current Sonos app. Mono or stereo files. This is separate from HDMI/optical theater formats.

Max wired audio sample rateiHighest explicitly published supported sample rate for decoded wired audio input. Name the exact HDMI, ARC, eARC or optical connection and codec in source notes. This is the published route limit, not proof of a device-wide maximum across all inputs. Local or network music-file limits and Bluetooth do not qualify. A chipset limit is not device evidence.

Not available

Not available

Max music file sample rateiHighest explicitly published supported local or network music-file sample rate. Name the playback route and file format in source notes. This is the published route and format limit, not proof of a device-wide maximum across all music formats. Wired HDMI or optical input and Bluetooth are separate.

Not available

48kHz5Maker product pagesupport.sonos.com/en-us/article/supported-audio-formats-for-sonos-music-libraryRead 8 October 2026Published local music-library maximum. Not a claim that HDMI/optical input rates match this route.

Max wired audio bit depthiHighest explicitly published supported bit depth for decoded wired audio input. Name the exact HDMI, ARC, eARC or optical connection and codec in source notes. This is the published route limit, not proof of a device-wide maximum across all inputs. Local or network music-file limits and Bluetooth do not qualify.

Not available

Not available

Max music file bit depthiHighest explicitly published supported local or network music-file bit depth. Name the playback route and file format in source notes. This is the published route and format limit, not proof of a device-wide maximum across all music formats. Wired HDMI or optical input and Bluetooth are separate.

Not available

24bits5Maker product pagesupport.sonos.com/en-us/article/supported-audio-formats-for-sonos-music-libraryRead 8 October 2026FLAC and ALAC local network music-library playback on the current app. AIFF and WAV are limited to 16 bits.

Connectivity

7 of 17 differ

Ports on the bariPhysical connectors on the soundbar alone. Record input, output, ARC or eARC, service, subwoofer and power roles explicitly. Count identical connectors per row. Component connectors are described in source notes.

AKlipsch Flexus Core 300

Connector	Count	Version	Role
HDMI	1	2.1	HDMI IN for a source device with video passthrough
HDMI	1	Not available	HDMI eARC output to the TV
Optical	1	Not available	Digital audio input
USB-C	1	Not available	USB input. The spec sheet says system updates and MP3 playback
Ethernet	1	Not available	Network connection
RCA	1	Not available	SUB OUT subwoofer output
3.5 mm audio	1	Not available	MIC input for the supplied Dirac Live calibration microphone
Other	1	Not available	Flexus transmitter port for the wireless subwoofer and surround dongles
AC power	1	Not available	Mains power input

Source3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Sound bar input/output page 6 shows power, Ethernet, USB-C, SUB OUT, HDMI eARC, HDMI IN, Flexus transmitter port, MIC, optical and a pair button. The spec sheet inputs row says USB-C but its USB input row says Type-A. The manual figure is followed. The pair button is not stored.

BSonos Arc Ultra

Connector	Count	Version	Role
HDMI	1	Not available	TV audio return input (ARC/eARC)
Ethernet	1	10/100 Mbps	Network input
AC power	1	Not available	Mains power input

Source2Owner's manualsonos.com/en-us/guides/arcultraRead 8 October 2026User guide Connector panel. HDMI is a TV audio return port and not a source-input/video-passthrough port. Optical adapter is not a native optical socket.

HDMI ARC

Not available

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

HDMI eARC

Yes3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Manual connection page and display list name the HDMI eARC input.

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

HDMI-CEC

Yes3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Display list shows a CEC on or off toggle for the CEC protocol.

Yes12Maker product pagesupport.sonos.com/en-us/article/tv-requirements-for-sonos-home-theater-speakersRead 8 October 2026TV control uses the HDMI ARC/eARC link. CEC control is unavailable through the optical adapter.

HDMI video passthroughiCan pass video from a dedicated HDMI source input to a television output. ARC or eARC alone does not qualify.

Yes2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Inputs list HDMI 2.1 passthrough and outputs list HDMI Out.

No15Press articletechradar.com/televisions/soundbars/sonys-new-dolby-atmos-soundbar-does-all-the-things-the-sonos-arc-ultra-doesnt-for-a-lower-price-and-its-expandable-for-home-theater-like-sonos-tooRead 8 October 2026Explicitly says Arc Ultra lacks HDMI video passthrough.

Video passthrough modesiPublished supported passthrough combinations, not inferred maxima at untested resolutions. State chroma, bit depth, HDR and firmware restrictions in source notes.

AKlipsch Flexus Core 300

Width (px)	Height (px)	Refresh rate (Hz)
3840	2160	120

Source4Reviewtechradar.com/televisions/soundbars/klipsch-flexus-core-300-reviewRead 10 October 2026Review states 4K 120 Hz passthrough on the HDMI input. The maker states HDMI 2.1 passthrough only. Chroma, bit depth and HDR conditions are not stated.

BSonos Arc Ultra

Not available

HDR passthrough formats

Not available

Not available

VRR passthrough

Not available

Not available

ALLM passthrough

Not available

Not available

HDCP versioniHighest HDCP version the maker states for an HDMI port of the soundbar, such as 2.3. When the source inputs and the TV output differ, the source input version is stored. A bar with no HDMI input stores the version of its TV output, also when that output carries video from a built-in streaming player.

Not available

Not available

Bluetooth audio inputiCan receive audio from a Bluetooth source. A Bluetooth remote alone does not qualify.

Yes3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Display list shows Bluetooth input and pairing. Version and codecs are not stated.

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Bluetooth versioniPublished version of the soundbar audio connection. An optional remote or detachable rear can use a different version.

Not available

5.31Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Bluetooth audio codecsiExplicitly supported codecs for received Bluetooth audio. A Bluetooth version alone does not establish a codec.

Not available

Not available

Wi-Fi

Yes3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Compliance pages describe a play-fi module with 2.4 GHz and 5 GHz dual bands. Streaming source labels on the display include Cast, AirPlay, Spotify, Tidal and Q Play.

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Wi-Fi standardiPublished Wi-Fi standards for the soundbar, written as 802.11 names without IEEE, such as "802.11a/b/g/n/ac/ax". A Wi-Fi generation is written as its standard, so Wi-Fi 5 is "802.11ac" and Wi-Fi 6 is "802.11ax". Do not infer the standard from frequency bands.

Not available

802.11a/b/g/n/ac/ax3Maker product pagesupport.sonos.com/en-us/article/supported-wifi-modes-and-security-standards-for-sonos-productsRead 8 October 2026Dedicated device-mode support list. General user-guide router compatibility text is not device-protocol evidence.

Wi-Fi bandsiPublished radio bands, such as 2.4 GHz and 5 GHz.

2.4 GHz, 5 GHz3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Compliance pages: play-fi module 2.4G and 5 GHz dual bands.

2.4 GHz, 5 GHz3Maker product pagesupport.sonos.com/en-us/article/supported-wifi-modes-and-security-standards-for-sonos-productsRead 8 October 2026Router uplink bands from the dedicated support list. Surround speaker radio links are separate.

Built-in Ethernet speediRated speed of the built-in port. An optional adapter does not count.

Not available

100Mbps1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Streaming and control

8 of 8 differ

Streaming protocolsiNamed network playback protocols, such as AirPlay 2, Google Cast, Spotify Connect and Tidal Connect. Bluetooth is separate.

AirPlay 2, Google Cast, Spotify Connect, Tidal Connect, QPlay1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page lists built-in connections to Apple AirPlay, Google Cast, TIDAL Connect, QPlay and Spotify Connect. The manual names AirPlay 2 on the display list.4Reviewtechradar.com/televisions/soundbars/klipsch-flexus-core-300-reviewRead 10 October 2026Review: Wi-Fi streaming supports Spotify Connect, Tidal Connect, AirPlay and Google Cast.

AirPlay 2, Spotify Connect, Tidal Connect1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 202614Reviewwhathifi.com/reviews/sonos-arc-ultraRead 8 October 2026Tech specs identify Spotify Connect and Tidal Connect. AirPlay 2 confirmed by maker.

Voice assistantsiNamed assistants supported by the soundbar. Built-in and external-device routes and market restrictions belong in source notes.

Not available

Sonos Voice Control, Amazon Alexa1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Built-in voice services. Availability varies by country and language.

Built-in microphoneiPhysical microphone in the bar for voice or calibration. An external setup phone or remote microphone does not count.

No3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026The bar has a MIC input for a supplied wired calibration microphone. No built-in microphone or voice assistant is described.4Reviewtechradar.com/televisions/soundbars/klipsch-flexus-core-300-reviewRead 10 October 2026Review: no voice assistant support and a wired microphone supplied for Dirac Live.

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Microphone mute controliA physical control on the soundbar explicitly disables its built-in voice microphone. State whether this is an electrical switch or software-controlled button when known.

Not available

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Rear physical switch disconnects power to the microphones.

Companion apps

Klipsch Connect Plus1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page names the Klipsch Connect Plus app for EQ presets, custom EQ, Night Mode, Dialogue Boost and volume.

Sonos1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Companion app platforms

iOS, Android1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page offers downloads for iOS and Android.

iOS, iPadOS, Android, Fire OS, macOS, Windows, Web6Maker product pagesupport.sonos.com/en-us/article/sonos-app-requirementsRead 8 October 2026Current app: iOS/iPadOS 18+, Android 10+, Fire OS 7+. Desktop macOS 10.12+/Windows 8+. Desktop and web have limited system setup features. Mobile iOS or Android required for initial setup.

Multiroom audioiCan play synchronised audio with other rooms through a supported network platform. Optional surround expansion alone does not qualify.

Not available

Yes13Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Remote includediA separate remote control supplied with the reference package. Phone apps and TV remotes do not count.

Yes2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Included accessories list a BLE backlit remote control.

No1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Complete box contents contain no separate remote. Control uses a TV remote, touch controls or the app.

Sound processing

3 of 7 differ

Sound modes

Movie, Music3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Display list: Movie (default) and Music modes, Dialog Boost off, low, medium and high, and Night off or on.

Speech Enhancement, Night Sound1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Automatic room calibrationiExplicit acoustic measurement or analysis used to adapt playback to the room. Manual EQ alone does not qualify. Setup phone requirements belong in source notes.

Yes1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page: built-in Dirac Live room correction scans the room. A microphone is in the box.

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Trueplay measures room acoustics. Quick tuning works with Android or iOS. Advanced tuning requires an iOS device.

Room calibration system

Dirac Live1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page: Dirac Live. A public review says the supplied version is basic and a fuller licence costs extra.4Reviewtechradar.com/televisions/soundbars/klipsch-flexus-core-300-reviewRead 10 October 2026Review: Dirac Live calibration uses the supplied wired microphone and takes about ten minutes.5Reviewrtings.com/soundbar/reviews/klipsch/flexus-core-300Read 10 October 2026Public review intro says it is the first model with a basic version of Dirac Live, and the full licence costs extra. Membership-locked measurements were not used.

Trueplay1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Dialogue enhancementiA dialogue or voice mode counts, also when the maker lists it as an EQ preset.

Yes1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page: Dialogue Boost in the Klipsch Connect Plus app. The manual lists Low, Medium and High levels.3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Display list: Dialog Boost with three levels.

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Night mode

Yes1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page: Night Mode in the Klipsch Connect Plus app. The manual shows NGT ON and NGT OFF on the display.3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Display list: NGT OFF and NGT ON.

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Equalizer controlsiPublished user-adjustable EQ controls. Bass and treble controls are distinct from multi-band EQ.

Bass level, Three-band EQ, Per-channel level1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Page: EQ presets or a custom EQ mix in the app.3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Display list: bass equalizer level -6 to +6. Review text adds a three-band EQ and per-channel levels in the app.4Reviewtechradar.com/televisions/soundbars/klipsch-flexus-core-300-reviewRead 10 October 2026Review: three-band EQ with 6 dB boost or cut and individual channel volumes in the app.

Bass, Treble, Loudness1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

TV speaker integrationiNamed features allowing compatible television speakers to play with the bar. TV models and connection requirements belong in source notes.

Not available

Not available

Power

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Published operating poweriMaker-published operating electrical consumption of the soundbar alone. Included subwoofer and rear-speaker consumption do not count. Keep workload and method in source notes. Audio amplifier output is separate.

Not available

Not available

Published standby poweriMaker-published non-networked standby consumption of the bar alone. Networked standby and other components are separate.

Not available

Not available

Published networked standby poweriMaker-published networked standby consumption of the bar alone. Enabled radio and network conditions belong in source notes.

2W3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Power consumption page: network standby mode is lower than 2 W. Stored 2 is that upper bound and not an exact draw.

Not available

Power supplyiPublished AC input range or external DC adapter arrangement. Electrical input ratings are not operating consumption.

Not available

100-240 V AC, 50/60 Hz, internal power supply1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Detachable rear battery lifeiMaker-stated runtime of the supplied detachable rear speakers. Volume, mode and recharge conditions belong in source notes.

Not available

Not available

Detachable rear charge timeiMaker-stated full recharge time of supplied detachable rear speakers. Charging route belongs in source notes.

Not available

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Measured

None of 8 known

Low-frequency extension (measured)iReviewer-measured lower extension for the exact tested package. Test threshold, mode, room correction and configuration belong in source notes.

Not available

Not available

High-frequency extension (measured)iReviewer-measured upper extension for the exact tested package. Test threshold and configuration belong in source notes.

Not available

Not available

Max sound pressure (measured)iReviewer-measured maximum sound pressure. Signal, distance, sound mode and supplied or optional speaker configuration belong in source notes.

Not available

Not available

Frequency response deviation (measured)iReviewer-measured standard error against the stated target. Target, averaging range, preset and test method belong in source notes.

Not available

Not available

Measured latencyiReviewer-measured audio latency. Keep source/TV, firmware, codec, synchronisation correction and exact tested speaker configuration in source notes. Negative offsets are valid when the method reports them.

Not available

Not available

Operating power (measured)iReviewer-measured operating consumption of the soundbar alone. Optional or supplied external speakers do not count. Workload and enabled radio conditions belong in source notes.

Not available

Not available

Standby power (measured)iReviewer-measured bar-only standby consumption. Network state and test conditions belong in source notes.

Not available

Not available

Soundbar weight (measured)iReviewer-measured bar-only weight. Excludes subwoofer, rears, mounting hardware and cables.

Not available

Not available

Dimensions and weight

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Soundbar dimensionsiBar alone in its normal tabletop orientation, without detachable rears, wall brackets or external cables. A source that includes detachable ends must use component_dimensions instead. A size labelled L x W x H, as on Amazon, is width x depth x height.

Width1,372Height78Depth126mm(54 × 3.1 × 5 in)2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Dimensions 3 1/16 in (7.8 cm) H x 54 in (137.2 cm) W x 4 15/16 in (12.6 cm) D. Metric figures as printed.

Width1,178Height75Depth110.6mm(46.4 × 3 × 4.4 in)2Owner's manualsonos.com/en-us/guides/arcultraRead 8 October 2026Current user guide Specifications, bar in tabletop orientation.

Soundbar weightiBar alone, without detachable rears, subwoofer, wall brackets or external cables. Source-published masses including detachable ends belong in component_dimensions.

8,500g(18.7 lb)2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Weight 18.7 lbs (8.5 kgs). Stored from the kilogram figure.

5,900g(13 lb)2Owner's manualsonos.com/en-us/guides/arcultraRead 8 October 2026Current user guide Specifications, bar alone. Kilograms converted exactly to grams.

Component dimensions and weightiPublished dimensions and mass for named supplied components, including a bar with detachable rears attached when stated. Each row describes one enclosure, not the pair, unless the component label explicitly states a set. Width, height and depth use normal installed orientation.

Not available

Not available

Package dimensions

Not available

Not available

Package weightiShipping package including supplied components and packaging.

Not available

Not available

Wall mountable

Yes2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Mounting options: 1/4 x 20 threaded insert and an optional slim-depth wall bracket sold separately.

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

In the box

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In the box

Sound bar, Remote control with 2 AAA batteries, Power cord (2.0 m, region specific), HDMI cable (1.5 m), Wired microphone, User manual2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Included accessories: BLE backlit remote, 2.0 m power cord (region specific), 1.5 m HDMI cable, 2 AAA batteries and user manual. The manual's Inside page also shows a microphone.3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Inside page shows sound bar, remote, power cord, HDMI cable and a microphone.

Sonos Arc Ultra, Power cable, HDMI cable, Setup guide, Legal and warranty information1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Product page Box Contents lists the standalone bar package.

Wall mount hardware includediSupplied bar mounting brackets or mount. Screws alone do not establish that a complete mount is included.

No2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026The wall bracket is optional and sold separately. It is not in the included accessories list.

No1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Sonos wall mount is sold separately.

HDMI cable included

Yes2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Included accessories list a 1.5 m HDMI cable.

Yes1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Optical cable included

No2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026No optical cable is in the included accessories list.

No1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Optical audio adapter sold separately. No optical cable supplied.

General

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Series

Flexus1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026Maker names the product line Flexus. The Core 300 sits above the Core 200 and Core 100.

Not available

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

1072083, 1072084, 10720852Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Model table lists SKU 1072083 (NA), 1072084 (EUA) and 1072085 (CCC). Region names are as printed.

ARCG2US1BLK, ARCG2US11Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026Maker ProductGroup JSON-LD lists the black and white US standalone soundbar SKUs.

GTIN / EAN

743878066692, 743878066708, 7438780667152Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Model table lists UPC 743878066692 for NA, EAN 0743878066708 for EUA and 0743878066715 for CCC. Stored in the 12-digit UPC form with the leading zero removed from the EANs.

Not available

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

Not available

15 October 20249Press releasenewsroom.sonos.com/254655-sonos-reveals-arc-ultra-its-new-soundbar-featuring-sound-motionRead 8 October 2026

Status

Not available

Available1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Sonos Arc16Reviewwhathifi.com/reviews/sonos-arcRead 23 October 2026What Hi-Fi says the Sonos Arc was discontinued and replaced by the Arc Ultra.

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

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Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$1,199.994Reviewtechradar.com/televisions/soundbars/klipsch-flexus-core-300-reviewRead 10 October 2026Review lists $1,199.99 for the Core 300 soundbar alone, in US dollars. The subwoofer and surround speakers are priced separately. Tax is not included.

$9998Maker spec sheet (PDF)assets.sonos.com/media-kits/hardware/sonos-arc-ultra/sonos-arc-ultrafactsheet.pdfRead 8 October 2026Official launch fact sheet USD price for the standalone bar, excluding US sales tax. Later shop prices are not launch prices.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

€9998Maker spec sheet (PDF)assets.sonos.com/media-kits/hardware/sonos-arc-ultra/sonos-arc-ultrafactsheet.pdfRead 8 October 2026Official launch fact sheet euro retail launch price as published for the standalone bar, including VAT.

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

Not available

Not available

ColoursiThe maker's own colour names

Ebony Vinyl2Maker spec sheet (PDF)d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdfRead 10 October 2026Finish row: Ebony Vinyl. A walnut version appears on the maker page but its finish name and SKU are not in the spec sheet.

Black, White1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026The black and white standalone bar have the same acoustic hardware.

Links

Not compared

Product page

www.klipsch.com/products/flexus-core-3001Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026

www.sonos.com/en-us/shop/arc-ultra1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

Spec sheet

d2um2qdswy1tb0.cloudfront.net/spec-sheets/Flexus-Core-300-Spec-Sheet-v08.pdf1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026

assets.sonos.com/media-kits/hardware/sonos-arc-ultra/sonos-arc-ultrafactsheet.pdf8Maker spec sheet (PDF)assets.sonos.com/media-kits/hardware/sonos-arc-ultra/sonos-arc-ultrafactsheet.pdfRead 8 October 2026

Manual

d2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdf1Maker product pageklipsch.com/products/flexus-core-300Read 10 October 2026

www.sonos.com/en-us/guides/arcultra1Maker product pagesonos.com/en-us/shop/arc-ultraRead 8 October 2026

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

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Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

2years3Owner's manuald2um2qdswy1tb0.cloudfront.net/product-manuals/Flexus-Core_300-Manual.pdfRead 10 October 2026Sound bar warranty page for Flexus Core 100, 200 and 300, US: two years from the date of purchase.

1year7Maker product pagesonos.com/en-us/legal/terms-of-useRead 8 October 2026US new product manufacturer warranty, section 10(a). One year from original purchase. Excludes statutory rights and extended protection.

Both are also in the API. Back to all soundbars.