{"data":{"slug":"audio-technica-ath-m40x","type":"headset","brand":"Audio-Technica","name":"ATH-M40x","aliases":["M40x","ATH M40x","ATH-M40x Black"],"release_date":"2014-02","url":"https://arkivo.dev/headsets/audio-technica-ath-m40x","specs":{"series":"M-Series","model_numbers":["ATH-M40x"],"gtins":["4961310125424"],"announce_date":"2014-01","status":"available","predecessor":null,"successor":null,"launch_price_usd":139,"launch_price_eur":null,"markets":null,"colors":["Black"],"manufacturer_url":"https://www.audio-technica.com/en-us/ath-m40x","spec_sheet_url":"https://docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdf","manual_url":"https://www.audio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdf","eprel_registration_number":null,"warranty_years":1,"segment":"studio","form_factor":"over_ear","back_type":"closed","wearing_style":"headband","foldable":"flat_and_inward","ear_cups_swivel":true,"rgb_lighting":null,"lighting_zones":null,"driver_type":"dynamic","driver_size_mm":40,"drivers_per_side":null,"driver_diaphragm_material":null,"driver_magnet":"Neodymium","frequency_response_hz":{"min_hz":15,"max_hz":24000},"frequency_response_wireless_hz":null,"impedance_ohm":35,"sensitivity_db":98,"sensitivity_reference":"per_1mw","thd_pct":null,"max_input_power_mw":1600,"max_sample_rate_khz":null,"max_bit_depth_bits":null,"dac_chip":null,"sound_personalization":null,"onboard_eq":null,"eq_bands":null,"eq_presets":null,"volume_limit_db":null,"virtual_surround":null,"spatial_audio_licence_included":null,"head_tracking":null,"anc":false,"anc_type":null,"anc_mic_count":null,"anc_adaptive":null,"anc_levels":null,"anc_claimed_attenuation_db":null,"transparency_mode":null,"transparency_adjustable":null,"conversation_detection":null,"wind_noise_reduction":null,"measured_frequency_response_notes":"Follows the SoundGuys studio preference curve closely. Deviations in the sub-bass and between 200 and 600 Hz. Bass is audible but subdued, the lower mids get a modest boost at 100 to 200 Hz and the treble is pleasantly emphasized.","measured_bass_amount_db":null,"measured_treble_amount_db":null,"measured_target_deviation_db":null,"measured_response_consistency_db":null,"measured_thd_pct":null,"measured_leakage_db_spl":null,"measured_noise_isolation":null,"measured_attenuation_overall_db":null,"measured_attenuation_passive_db":null,"measured_microphone_notes":null,"measured_microphone_lfe_hz":null,"measured_microphone_hfe_hz":null,"measured_microphone_noise_handling_db":null,"measured_latency":null,"measured_latency_bluetooth_ms":null,"measured_latency_2_4ghz_ms":null,"measured_battery_life":null,"measured_battery_life_h":null,"measured_clamping_force_n":null,"measured_weight_g":null,"microphone_type":"none","microphone_element":null,"microphone_pattern":null,"microphone_count":null,"microphone_count_total":null,"microphone_frequency_response_hz":null,"microphone_sensitivity_db":null,"microphone_snr_db":null,"microphone_sample_rate_khz":null,"microphone_noise_reduction":null,"flip_to_mute":null,"mute_button":null,"mute_indicator":null,"sidetone":null,"sidetone_adjustable":null,"mic_windscreen":null,"connection_types":["analog"],"analog_connectors":["3_5mm_trs","6_35mm"],"cable_connector_headset_side":"proprietary","cable_length_m":3,"usb_connector":null,"usb_c_audio":null,"passive_wired_listening":true,"wireless_receiver":"none","receiver_connector":null,"wireless_range_m":null,"bluetooth_version":null,"bluetooth_codecs":null,"bluetooth_le_audio":null,"auracast":null,"multipoint":null,"multipoint_device_count":null,"paired_device_memory":null,"simultaneous_2_4ghz_bluetooth":null,"fast_pair":null,"base_station":null,"low_latency_mode":null,"latency_claimed":null,"compatible_platforms":null,"platform_connections":null,"official_license":null,"battery_capacity_mah":null,"swappable_battery":null,"battery_count":null,"battery_life_claimed":null,"battery_life_max_h":null,"battery_life_anc_on_h":null,"battery_life_anc_off_h":null,"charging_port":"none","charge_time_0_100_min":null,"quick_charge_min":null,"quick_charge_playback_h":null,"play_while_charging":null,"charging_dock":null,"control_types":null,"volume_control":"none","game_chat_mix":null,"customizable_controls":null,"wear_detection":null,"voice_assistant":null,"headband_type":"padded","headband_material":null,"frame_material":null,"ear_cup_material":"Plastic","earpad_material":"Synthetic leather","earpad_replaceable":true,"earpad_attachment":"stretch_over","earpad_inner_dimensions_mm":null,"ear_tip_sizes":null,"ip_rating":null,"user_replaceable_parts":["Ear pads (HP-M40x)","Coiled cable 1.2 m","Straight cable 3.0 m"],"companion_app":null,"companion_app_platforms":null,"firmware_updatable":null,"weight_g":240,"dimensions_mm":null,"hi_res_audio":null,"communication_certifications":null,"fcc_id":null,"other_certifications":["RoHS (2011/65/EU)"],"in_the_box":["Detachable coiled cable 1.2 m, extends to about 3.0 m","Detachable straight cable 3.0 m","6.3 mm (1/4 inch) screw-on adapter","Protective carrying pouch"],"cables_included":[{"type":"Coiled cable, detachable, extends to 3.0 m","length_m":1.2,"count":1},{"type":"Straight cable, detachable","length_m":3,"count":1}],"carrying_case":"soft"},"variants":[],"sources":[{"url":"https://www.audio-technica.com/en-us/ath-m40x","kind":"manufacturer_page","accessed":"2026-10-23","fields":["manufacturer_url","status","segment","form_factor","back_type","wearing_style","foldable","ear_cups_swivel","driver_type","driver_size_mm","driver_magnet","frequency_response_hz","impedance_ohm","sensitivity_db","max_input_power_mw","anc","microphone_type","connection_types","passive_wired_listening","wireless_receiver","charging_port","volume_control","weight_g","in_the_box","cables_included","carrying_case","cable_length_m"],"notes":{"status":"Sold on the maker US store at $109.00 on the access date. The Japanese page marks the model as production ended (生産完了), so it is a Japan-only end of production.","segment":"The perfect studio headphones for professional tracking, mixing and monitoring.","form_factor":"Over-ear wired headphones with a circumaural design.","back_type":"Specifications: Type Closed-back dynamic","wearing_style":"Headband headphones with 90 degree swiveling earcups and a collapsible design.","foldable":"Features: 90 degree swiveling earcups and collapsible for space-saving portability. The Japanese page describes a 90 degree flip mechanism and a folding mechanism, and the manual shows the swivel housing and the folded position. The value follows the ATH-M50x entry, which has the same mechanism.","ear_cups_swivel":"Features: 90 degree swiveling earcups for easy, one-ear monitoring. The Japanese page gives 90 degrees forward and 15 degrees backward.","driver_type":"Specifications: Type Closed-back dynamic","driver_size_mm":"Specifications: Driver Diameter 40 mm","driver_magnet":"Specifications: Magnet Neodymium","frequency_response_hz":"Specifications: Frequency Response 15 - 24,000 Hz","impedance_ohm":"Specifications: Impedance 35 ohms","sensitivity_db":"Specifications: Sensitivity 98 dB. The Japanese page gives 98 dB/mW.","max_input_power_mw":"Specifications: Maximum Input Power 1,600 mW at 1 kHz","anc":"Passive wired studio headphones with no electronics.","microphone_type":"Wired studio headphones with no microphone.","connection_types":"Wired headphones with detachable analog cables.","passive_wired_listening":"Passive dynamic headphones with no battery, so analog playback needs no power.","wireless_receiver":"Wired headphones with no wireless parts.","charging_port":"Passive wired headphones with no battery or charging port.","volume_control":"No volume control on the headphones or the supplied cables.","weight_g":"Specifications: Weight 240 g (8.5 oz), without cable and connector","in_the_box":"Specifications: Accessories included: protective carrying pouch and 6.3 mm (1/4 inch) screw-on adapter. Cable: two interchangeable cables, a detachable 1.2 m to 3.0 m coiled cable and a detachable 3.0 m straight cable.","cables_included":"Cable: detachable 1.2 m to 3.0 m coiled cable and detachable 3.0 m straight cable. The Japanese page gives the coiled cable as 1.2 m, about 3 m when extended.","carrying_case":"Accessories included: protective carrying pouch","cable_length_m":"Cable: detachable 3.0 m (9.8 ft) straight cable, the longest of the two included cables. The coiled cable runs 1.2 m to 3.0 m."}},{"url":"https://www.audio-technica.co.jp/product/ATH-M40x","kind":"manufacturer_page","accessed":"2026-10-23","fields":["model_numbers","gtins","release_date","sensitivity_reference","cable_connector_headset_side","analog_connectors","headband_type","earpad_replaceable","user_replaceable_parts"],"notes":{"model_numbers":"Model number (型番): ATH-M40x","gtins":"JAN code (JANコード) 4961310125424","release_date":"Release date (発売日): 14 February 2014. ProSoundWeb says the models are available in February 2014 and Thomann says available since February 2014.","sensitivity_reference":"Published as 98 dB/mW (出力音圧レベル 98dB/mW)","cable_connector_headset_side":"Detachable cords with a bayonet lock mechanism (着脱コード(バヨネット式ロック機構)). Read as a maker-specific twist-lock connector, as for the ATH-M50x.","analog_connectors":"Plug: 6.3 mm standard and 3.5 mm mini, gold-plated stereo 2-way (プラグ φ6.3mm標準/φ3.5mmミニ 金メッキステレオ2ウェイ)","headband_type":"New earpad and head pad (ヘッドパッド) materials for high durability, so the headband has a head pad.","earpad_replaceable":"Sold separately (別売): replacement ear pads HP-M40x.","user_replaceable_parts":"Sold separately (別売): replacement ear pads HP-M40x, coiled cord (detachable) 1.2 m and straight cord (detachable) 3.0 m."}},{"url":"https://docs.audio-technica.com/eu/DOC_ATH-M20x_30x_40x_50x.pdf","kind":"manufacturer_pdf","accessed":"2026-10-23","fields":["spec_sheet_url","driver_type","driver_size_mm","driver_magnet","frequency_response_hz","impedance_ohm","sensitivity_db","max_input_power_mw","weight_g","other_certifications"],"notes":{"spec_sheet_url":"Official technical construction file TCF ATTWCE-HP140318001 dated 2014-03-18. The ATH-M40x table is on PDF page 6. Image-only PDF, read visually.","driver_type":"PDF page 6: Type Closed-back dynamic","driver_size_mm":"PDF page 6: Driver Diameter 40 mm","driver_magnet":"PDF page 6: Magnet Neodymium","frequency_response_hz":"PDF page 6: Frequency Response 15 - 24,000 Hz","impedance_ohm":"PDF page 6: Impedance 35 ohms","sensitivity_db":"PDF page 6: Sensitivity 98 dB","max_input_power_mw":"PDF page 6: Maximum Input Power 1,600 mW at 1 kHz","weight_g":"PDF page 6: Weight 240 g (8.5 oz), without cable and connector","other_certifications":"Declaration of Conformity on PDF page 9 covers ATH-M20x/30x/40x/50x and lists RoHS Directive 2011/65/EU and EN50581:2012. This is manufacturer self-declaration, not independent certification."}},{"url":"https://www.audio-technica.co.jp/pdf/support/ATH-M20x-50x_UM.pdf","kind":"manual","accessed":"2026-10-23","fields":["manual_url","warranty_years","foldable","ear_cups_swivel","cables_included"],"notes":{"manual_url":"Operating instructions for ATH-M50x, ATH-M40x, ATH-M30x and ATH-M20x. PDF page 2 is in English.","warranty_years":"Japanese warranty certificate on PDF page 1: one year from purchase. This is Japan coverage, not a global warranty claim.","foldable":"The model chart gives the ATH-M40x items B, C, F and G. G is the folded position, with the text that the headphones can be folded for storage.","ear_cups_swivel":"Part names show the swivel housing.","cables_included":"The model chart gives the ATH-M40x a 3.0 m detachable straight cable (B) and a 3.0 m detachable coiled cable (C)."}},{"url":"https://docs.audio-technica.com/eu/p52521_mseries_earpad_replacement.pdf","kind":"manufacturer_pdf","accessed":"2026-10-23","fields":["earpad_attachment","earpad_replaceable"],"notes":{"earpad_attachment":"Instruction P52521 for HP-EP replacement earpads names the ATH-M40x. Step 2: slide the new earpad's flange into the slot of the earcup. Step 3: gently stretch the flange over the slot until the pad is securely in place.","earpad_replaceable":"The instruction lists the ATH-M40x among the models and tells the user to remove the existing earpad by pulling it off."}},{"url":"https://www.prosoundweb.com/audio-technica-introduces-next-generation-m-series-headphones/","kind":"press","accessed":"2026-10-23","fields":["launch_price_usd"],"notes":{"launch_price_usd":"Article of 7 February 2014: the models are available in February 2014 at these U.S. MSRPs: ATH-M20x $69, ATH-M30x $99, ATH-M40x $139, ATH-M50x $239. Radio World of 25 February 2014 gives the same list. SoundGuys lists an MSRP of $99 for the ATH-M40x, which matches the ATH-M30x price and is not used."}},{"url":"https://www.musicradar.com/news/tech/namm-2014-audio-technica-reveals-new-m-series-headphones-591670","kind":"press","accessed":"2026-10-23","fields":["announce_date","series"],"notes":{"announce_date":"Published 23 January 2014. It reproduces the maker press release dated 20-01-2014: the ATH-M20x, ATH-M30x, ATH-M40x and ATH-M50x make their debut at Winter NAMM 2014. The month is stored, as for the sibling models.","series":"Describes the ATH-M40x as part of the overhauled M-Series range."}},{"url":"https://www.thomannmusic.com/audio_technica_ath_m40_x.htm","kind":"retailer","accessed":"2026-10-23","fields":["colors","release_date","weight_g"],"notes":{"colors":"Thomann spec table (item 331904): Colour Black.","release_date":"Available since February 2014.","weight_g":"Thomann lists 241 g without cable and 300 g with cable, which agrees with the maker 240 g without cable."}},{"url":"https://soundguys.com/audio-technica-ath-m40x-review-1494/","kind":"measurement","accessed":"2026-10-23","fields":["measured_frequency_response_notes"],"notes":{"measured_frequency_response_notes":"SoundGuys lab review, byline dated 31 January 2025, against its studio headphone preference curve. The graphs are script charts, so the text is the source: closely follows the curve with deviation in the sub-bass and in the 200 to 600 Hz midrange, bass subdued, lower mids boosted at 100 to 200 Hz, treble pleasantly emphasized."}},{"url":"https://www.sonarworks.com/soundid-reference/blog/reviews/ath-m40x-studio-headphone-review/","kind":"review_site","accessed":"2026-10-23","fields":["ear_cup_material","earpad_material"],"notes":{"ear_cup_material":"Sonarworks review of 27 May 2019: the ear cups are plastic and seem of lower quality than the ATH-M50x.","earpad_material":"Sonarworks review: the ear pads are artificial leather (pleather). SoundGuys also calls the pads synthetic."}}],"fields_filled":47,"updated":"2026-10-23"},"meta":{"api_version":"1","docs":"https://arkivo.dev/api"}}