Soundbars / Compare
JBL Bar 300MK2 vs Sonos Beam Ultra
Product A: JBL
68 of 98 known
Change JBL Bar 300MK2
Product B: Sonos
58 of 98 known
44 of 90 fields differ
- 25 different values
- 19 known for one only
- 24 the same
- 22 missing for both
Weight
0 to 30,000 g
Soundbar weight
A2,900g
B2,880g
All 98 fields
Every value links to where we found it.


Audio system
10 of 17 differ
System channel configuration
Physical drivers in the package
Physical drivers in the bar
Up-firing drivers in the package
Driver layout
AJBL Bar 300MK2
| Component | Driver type | Count | Diameter (mm) |
|---|---|---|---|
| Soundbar | Racetrack driver (42 x 80 mm) | 5 | Not available |
| Soundbar | Tweeter | 4 | 20 |
BSonos Beam Ultra
| Component | Driver type | Count | Orientation |
|---|---|---|---|
| Soundbar | Mid tweeter | 1 | Forward-firing |
| Soundbar | Horn-loaded mid tweeter | 2 | Side-firing |
| Soundbar | Horn-loaded tweeter | 2 | Up-firing |
| Soundbar | Low-profile woofer | 4 | Not available |
Separate subwoofer included
Included subwoofer connection
Not available
Not available
Included subwoofer driver diameter
Not available
Not available
Rear speakers included
Included rear speaker connection
Not available
Not available
Detachable rear speakers
Not available
Compatible optional subwoofers
Not available
Sub (Gen 1), Sub (Gen 2), Sub (Gen 3), Sub 4, Sub Mini11Maker product pagesupport.sonos.com/en-us/article/set-up-your-sonos-subRead 8 October 2026Sub 1/2/3 compatible with all Sonos theater bars. Sub 4 except Playbar/Playbase. Dual-Sub Beam Ultra requires Sub 4/Gen 3. Sub Mini confirmed separately.12Maker product pagesupport.sonos.com/en-us/article/sonos-products-that-support-sub-miniRead 8 October 2026Explicit Home Theater list includes Beam Ultra for Sub Mini.
Compatible optional rear speakers
JBL Cove M1, JBL Cove P15Maker product pagesupport.jbl.com/howto/bar-300mk2-bar-500mk2-software-update-release-notes-me8zilyp8q7-us/000052493.htmlRead 8 October 2026Exact 300MK2/500MK2 US release notes name multi-channel grouping with Cove speakers in firmware 26.33.11.82.00, August 19, 2026. The separate exact-applicability FAQ names models and same-model pair requirement. This later optional expansion does not alter supplied package counts.6Maker product pagesupport.jbl.com/gb/en/howto/which-cove-speaker-models-are-compatible-with-jbl-bar-mk2-series-to-form-home-theater-groups-mttxsft6e8-emea/000055042.htmlRead 8 October 2026Current maker FAQ explicitly includes Bar 300MK2 and requires a pair of either two Cove M1 or two Cove P1 speakers for home theater grouping. US exact-family firmware release corroborates availability of this software feature. Speakers are optional, not supplied. Other Cove models and subwoofer compatibility are not inferred.
Era 100, Era 300, Sonos Play, Move 21Maker product pagesonos.com/en-us/shop/beam-ultraRead 8 October 2026Product page explicitly names Sonos Play and Move 2, and offers Era 100 sets. Maker Beam Ultra guide additionally names Era 300. Matching pairs required.5Maker product pagesonos.com/en-us/blog/guide-to-beam-ultraRead 8 October 2026Foundation of home theater setup names optional Era 100 and Era 300 pairs.
Total RMS audio output power
Not available
Total peak audio output power
Not available
Published frequency response lower limit
Not available
Published frequency response upper limit
Not available
Audio formats
4 of 9 differ
Dolby Atmos
Yes1Maker product pagesonos.com/en-us/shop/beam-ultraRead 8 October 2026Specific audio format list supports Dolby Digital Plus Atmos without an eARC asterisk. Lossless TrueHD and MAT require eARC. The generic product headline says eARC, while maker setup guidance confirms ARC Atmos.6Maker product pagesupport.sonos.com/en-us/article/set-up-your-sonos-beam-ultraRead 8 October 2026Listen to Dolby Atmos on Beam Ultra explicitly says an HDMI ARC link can carry Atmos.
DTS:X
Supported audio formats
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)7Maker product pagesupport.sonos.com/en-us/article/supported-home-theater-audio-formatsRead 8 October 2026DTS Digital Surround is supported, not DTS:X. The maker says DTS listing is not an indication of a licensed decoder.
Audio formats by connection
BSonos Beam 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) |
Music file formats
MP3, MP4, M4A, WMA, AAC, HE-AAC, OGG, FLAC, ALAC, AIFF, WAV8Maker product pagesupport.sonos.com/en-us/article/supported-audio-formats-for-sonos-music-libraryRead 8 October 2026Current-app local network library playback, mono or stereo.
Max wired audio sample rate
Not available
Not available
Max music file sample rate
Max wired audio bit depth
Not available
Not available
Connectivity
4 of 17 differ
Ports on the bar
AJBL Bar 300MK2
| Connector | Count | Role |
|---|---|---|
| HDMI | 1 | Source audio/video input |
| HDMI | 1 | TV video output and ARC/eARC audio input |
| Optical | 1 | Digital audio input |
| USB-A | 1 | US MP3 storage playback and service |
| AC power | 1 | AC power input |
BSonos Beam Ultra
| Connector | Count | Role |
|---|---|---|
| HDMI | 1 | TV audio return input (ARC/eARC) |
| USB-C | 1 | Line-in or Ethernet via optional Sonos adapter |
| AC power | 1 | Mains power input |
HDMI ARC
HDMI eARC
HDMI-CEC
HDMI video passthrough
Video passthrough modes
Not available
Not available
HDR passthrough formats
Not available
VRR passthrough
Not available
Not available
ALLM passthrough
Not available
Not available
HDCP version
Not available
Bluetooth audio input
Bluetooth version
Bluetooth audio codecs
Not available
Not available
Wi-Fi
Wi-Fi standard
802.11a/b/g/n/ac/ax1Maker product pagesonos.com/en-us/shop/beam-ultraRead 8 October 2026
Wi-Fi bands
Built-in Ethernet speed
Not available
Not available
Streaming and control
6 of 8 differ
Streaming protocols
AirPlay 2, Google Cast, Spotify Connect, Tidal Connect, Roon Ready3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2ac4f39c/pdfs/HA_JBL_Bar%20300MK2_OM_Global_EN_V7.pdfRead 8 October 2026Printed pages 10-16 describe Google Cast, AirPlay and Spotify Connect and group playback. Exact US launch and current page independently add AirPlay 2, Tidal Connect and Roon Ready. Availability can require subscriptions and varies by service and market.4Press releasenews.harman.com/releases/jbl-introduces-next-gen-bar-series-for-truly-immersive-entertainmentRead 8 October 2026Exact Bar 300MK2 column explicitly lists AirPlay 2, Google Cast, Roon Ready, Spotify Connect and Tidal Connect. SmartThings is control, not an added music protocol. DTS Virtual:X launch forecast was late 2025, superseded by the exact dated firmware notes.
Voice assistants
Sonos Voice Control1Maker product pagesonos.com/en-us/shop/beam-ultraRead 8 October 2026Sonos Voice Control supported now. Alexa+ planned, not available at launch. No Google Assistant claim stored.6Maker product pagesupport.sonos.com/en-us/article/set-up-your-sonos-beam-ultraRead 8 October 2026Only Sonos Voice Control currently supported. Alexa+ is planned and unavailable at launch.
Built-in microphone
Microphone mute control
Not available
Companion apps
Companion app platforms
Multiroom audio
Yes3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2ac4f39c/pdfs/HA_JBL_Bar%20300MK2_OM_Global_EN_V7.pdfRead 8 October 2026Printed page 16 explicitly documents synchronized Google Cast groups and multiple selected AirPlay speakers on the same home network. Optional rear expansion is separate.5Maker product pagesupport.jbl.com/howto/bar-300mk2-bar-500mk2-software-update-release-notes-me8zilyp8q7-us/000052493.htmlRead 8 October 2026August 19, 2026 firmware explicitly adds JBL Whole-Home Audio synchronized playback. Auracast is also announced, but its direction and codec are not specified and it is not relabeled a Wi-Fi protocol. July 15, 2025 firmware explicitly adds DTS Virtual:X, superseding the launch forecast. No DTS:X decoder is inferred.
Remote included
Sound processing
4 of 7 differ
Sound modes
Not available
AI Speech Enhancement, Night Sound, Simulated Overhead Sound1Maker product pagesonos.com/en-us/shop/beam-ultraRead 8 October 2026
Automatic room calibration
Room calibration system
Dialogue enhancement
Night mode
Equalizer controls
7-band EQ in JBL One, Five bass levels3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2ac4f39c/pdfs/HA_JBL_Bar%20300MK2_OM_Global_EN_V7.pdfRead 8 October 2026Printed pages 7 and 13 give five bass levels, default 3. Seven-band app EQ is explicitly established by the maker launch, not guessed from an app screenshot.4Press releasenews.harman.com/releases/jbl-introduces-next-gen-bar-series-for-truly-immersive-entertainmentRead 8 October 2026Release explicitly states seven-band EQ for every named new Bar model, including Bar 300MK2. Manual separately proves the five bass levels.
Bass, Treble, Loudness1Maker product pagesonos.com/en-us/shop/beam-ultraRead 8 October 2026
TV speaker integration
Not available
Not available
Power
3 of 6 differ
Published operating power
Not available
Not available
Published standby power
Not available
Published networked standby power
Not available
Power supply
Internal power supply, 100-240 V AC, 50/60 Hz3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2ac4f39c/pdfs/HA_JBL_Bar%20300MK2_OM_Global_EN_V7.pdfRead 8 October 2026Printed pages 2, 6 and 18: supplied AC cord connects directly to the bar, rated 100-240 V AC, 50/60 Hz. No external adapter or output-wattage-to-input conversion is used.
100-240 V AC, 50/60 Hz, internal power supply1Maker product pagesonos.com/en-us/shop/beam-ultraRead 8 October 2026
Detachable rear battery life
Not available
Not available
Detachable rear charge time
Not available
Not available
Measured
None of 8 known
Low-frequency extension (measured)
Not available
Not available
High-frequency extension (measured)
Not available
Not available
Max sound pressure (measured)
Not available
Not available
Frequency response deviation (measured)
Not available
Not available
Measured latency
Not available
Not available
Operating power (measured)
Not available
Not available
Standby power (measured)
Not available
Not available
Soundbar weight (measured)
Not available
Not available
Dimensions and weight
5 of 6 differ
Soundbar dimensions
Width940Height50.5Depth104mm(37 × 2 × 4.1 in)3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2ac4f39c/pdfs/HA_JBL_Bar%20300MK2_OM_Global_EN_V7.pdfRead 8 October 2026Printed page 18 gives bare bar W x H x D directly in mm: 940 x 50.5 x 104. Brackets, cables and shipping packaging are excluded. Rounded inch figures are not converted over these metric values.
Soundbar weight
Component dimensions and weight
AJBL Bar 300MK2
| Component | Width (mm) | Height (mm) | Depth (mm) | Weight (g) |
|---|---|---|---|---|
| Soundbar | 940 | 50.5 | 104 | 2,900 |
BSonos Beam Ultra
Not availablePackage dimensions
Width1,180Height120Depth160mm(46.5 × 4.7 × 6.3 in)3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2ac4f39c/pdfs/HA_JBL_Bar%20300MK2_OM_Global_EN_V7.pdfRead 8 October 2026Printed page 18 explicitly labels packaging W x H x D as 1180 x 120 x 160 mm.
Not available
Package weight
Not available
In the box
2 of 4 differ
In the box
JBL Bar 300MK2 soundbar, Remote control with two AAA batteries, Power cord, 1.2 m HDMI cable, Two L-shaped wall-mount brackets and mounting hardware, Quick start guide, Safety instructions and warranty card, Wall-mounting template1Maker product pagejbl.com/JBLBAR300M2BLKAM.htmlRead 8 October 2026Current exact US maker box list explicitly names quick start guide, safety instructions and warranty card, and wall-mount template. Power cords are published as up to four depending on region, so no regional cord count is inferred.3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2ac4f39c/pdfs/HA_JBL_Bar%20300MK2_OM_Global_EN_V7.pdfRead 8 October 2026Printed page 5 complete inventory. Two AAA cells, one 1.2 m HDMI cable, two wall brackets with hardware and product information/template are supplied. Power-cord count and plugs vary by regional package, so no up-to-four global count is asserted for US. Optional Cove speakers are not supplied.
Sonos Beam Ultra, Power cable, HDMI cable, Setup guide, Legal and warranty information1Maker product pagesonos.com/en-us/shop/beam-ultraRead 8 October 2026
Wall mount hardware included
HDMI cable included
Optical cable included
General
6 of 7 differ
Series
Not available
Model numbers
Announced
Status
Predecessor
Not available
Not available
Successor
Not available
Not available
Launch price (US)
Launch price (EU)
Not available
Links
Not compared
Product page
Spec sheet
www.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw57f29c81/pdfs/JBL_BAR_300MK2_Black_Specsheet_EN.pdf2Maker spec sheet (PDF)jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw57f29c81/pdfs/JBL_BAR_300MK2_Black_Specsheet_EN.pdfRead 8 October 2026Original two-page English JBL Bar 300MK2 datasheet, linked by the exact US maker page. Its nine-driver inventory, geometry and explicit RMS footnote agree with the original owner manual. Regional USB exception is stated.
Manual
www.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2ac4f39c/pdfs/HA_JBL_Bar%20300MK2_OM_Global_EN_V7.pdf3Owner's manualjbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw2ac4f39c/pdfs/HA_JBL_Bar%20300MK2_OM_Global_EN_V7.pdfRead 8 October 2026Original 23-page owner manual, printed pages 2-22, document HA_JBL_Bar 300MK2_OM_Global_EN_V7. All pages read. Americas back panel and US-only MP3 playback are distinguished from service-only USB in other regions.
EPREL registration number
Not available
Not available
Warranty
0 of 1 differ
Manufacturer warranty (source market)
Both are also in the API. Back to all soundbars.















