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JBL Bar 300MK2 vs Sonos Beam Ultra

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

JBLBar 300MK2SonosBeam Ultra
Overview
ReleasedJune 2025September 2026
Sound
TypeSoundbarSoundbar
Channels5.07.1.2
Dolby AtmosYesYes
DriversFive 42 × 80 mm racetrack drivers and four 20 mm tweeters; built-in bass ports, without external subwoofer, rear speakers or upward-firing driversFive tweeters (one forward-firing centre, two side-firing horn-loaded and two upward-firing directional horn tweeters); four low-profile woofers
Amplifiers450 W maximum output at 1% THD; 225 W RMS at 1% THD, separately specified by the makerNine Class-D digital amplifiers
Frequency response50 Hz–20 kHz (−6 dB), maker specification–
Audio formatsDolby Atmos with virtual height effects and DTS Virtual:X; DTS Virtual:X was scheduled for a late-2025 software update and is listed in the current maker specificationsStereo PCM, Dolby Digital, Dolby Digital Plus and Atmos over Dolby Digital Plus; Dolby TrueHD, Atmos over TrueHD and multichannel PCM require eARC. Maker lists DTS Digital Surround with a note that this does not indicate a licensed decoder; no DTS:X (What Hi-Fi and TechRadar)
Room tuningAutomatic sound calibration, MultiBeam 3.0, PureVoice 2.0 dialogue enhancement and SmartDetails; seven-band EQ in JBL One. What Hi-Fi?'s December 2025 test reports no preset sound modesTrueplay room calibration compatible with iOS and Android; four levels of AI Speech Enhancement, Night Sound, adjustable bass/treble/loudness and simulated overhead sound for obstructed top placement
Connections
Wi-FiYesYes
BluetoothYesYes
AirPlayYesYes
HDMI eARCYesYes
Voice assistantsNoneSonos Voice Control
Wi-FiDual-band 2.4/5 GHz Wi-Fi 802.11 a/b/g/n/ac/axWi-Fi 6; 802.11a/b/g/n/ac/ax on 2.4 or 5 GHz
BluetoothBluetooth 5.3; A2DP 1.3 and AVRCP 1.5Bluetooth 5.3 audio streaming
PortsOne HDMI input, one HDMI eARC output, optical input and USB-A service port. HDR10+ and Dolby Vision passthrough; What Hi-Fi? and Les Numériques report no 4K 120 Hz support. USB music playback is US-onlyHDMI eARC/ARC; USB-C supports line-in with Sonos Line-In Adapter or line-in and Ethernet with Sonos Combo Adapter; adapters sold separately. Optical adapter sold separately
StreamingAirPlay, Google Cast, Spotify Connect, Tidal Connect and Roon Ready; subscriptions may be requiredSonos app services, Spotify and TIDAL direct control, AirPlay 2, Bluetooth and Dolby Atmos Music
Multi-roomAirPlay or Google Cast multiroom playbackSonos multi-room playback; optional compatible subwoofer and rear surrounds, including pairs of Sonos Play or Move 2; TV Audio Swap to compatible Sonos headphones
AppJBL One for network setup, sound calibration, equaliser, music services, Moment presets and software updatesSonos app; Wi-Fi internet connection and mains power required
Design
Weight2.9 kg2.88 kg
ControlsIncluded remote, top-panel volume/source controls and front display; HDMI CEC and app controls. Works with external Google Assistant or Siri devices, without a built-in voice assistantCapacitive playback, volume, voice and grouping controls; Bluetooth pairing button; physical microphone-power switch; compatible TV remote control
MicrophonesBuilt-in microphone for sound calibrationFar-field array with beamforming and multichannel echo cancellation for voice control, Trueplay and portable-surround setup
MountingTwo included wall-mount brackets and mounting templateFurniture placement or optional Beam Ultra Wall Mount; maker lists M5 × 0.8 mm thread pitch, L6.5 mm
Size940 × 50.5 × 104 mm (width × height × depth); main weight is the soundbar, while 4.8 kg is the packaged weight65 mm high, 750 mm wide, 105 mm deep
ColoursBlack; maker lists recycled plastic and aluminium in the constructionBlack, White
In the boxSoundbar, remote with two batteries, mains leads, HDMI cable, two wall-mount brackets, mounting template and product documentation; mains plugs vary by regionBeam Ultra, 2 m power cable, 1.5 m HDMI cable, setup and warranty documentation

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