JBL Bar 300MK2 5.0 channel all-in-one soundbar with Dolby Atmos®
SKU: JBL Bar 300MK25-Channel Configuration
225W RMS / 450W Max Power
Multibeam & Dolby Atmos 3D Sound Effects
HDMI, HDMI eARC & Optical Audio Inputs
4K HDR10+ & Dolby Vision Passthrough
Dual-Band Wi-Fi & Bluetooth Streaming
AirPlay & Google Cast Support
Clear Dialogue with PureVoice 2.0
Easy Sound Calibration
Set up & Customize with JBL ONE App
JBL BAR 300MK2
5.0 channel all-in-one soundbar with Dolby Atmos®
450W max output power and punchy bass without a separate subwoofer
Get a truly immersive sound experience from your music, movies, and games with 450 watts of max output power. Feel the thrilling energy of your favorite music and movies from built-in bass ports that pack a powerful punch.
Dolby Atmos®
Hear a plane soar overhead. Feel a crowd swarming past you. Or get carried away by the energy of your go-to dance playlist. Hear extraordinary cinematic sound from all directions with the 3D audio experience of Dolby Atmos®.
MultiBeam™ 3.0
Wherever you’re sitting, you’ll be in the middle of the action. Our MultiBeam™ 3.0 delivers a wide, cinema-like soundstage that makes every high-speed chase or epic fight scene come alive. The sound beams perfectly fill your room, delivering truly immersive, lifelike, and realistic sound reproduction.
PureVoice 2.0
Never miss a softly spoken line or a whispered plot twist. JBL’s own PureVoice 2.0 automatically raises or optimizes the dialogue, based on both ambient sound in the scene and your soundbar’s volume. So you’ll always hear every word, clearly and consistently, in cinema-quality sound.
SmartDetails
Hear all the subtleties in a film’s sound mix, just like you would in the theater. From a creaking door to a faraway shout, experience every detail the way the filmmakers intended in a clear, balanced sound field, thanks to JBL’s own advanced sound enhancement technology.
Easy sound calibration
Every room is different. Your soundbar discovers how sound reflects off your walls and furniture. So it’ll deliver the best 3D surround effects, tuned specifically for your space and with any TV.
HDMI eARC with 4K Dolby Vision passthrough
No matter what brand your TV is, enjoy uncompressed Dolby Atmos surround sound through a single HDMI cable thanks to the HDMI eARC connection. The HDMI input connection also offers 4K video quality from a compatible video player or gaming console.
JBL ONE App
Set up the soundbar using the JBL ONE app, then make it yours. Customize the sound your way with a precise equalizer, browse your favorite music apps, and get software upgrades for all the latest features, right from your couch.

450W max output power and punchy bass without a separate subwoofer
Get a truly immersive sound experience from your music, movies, and games with 450 watts of max output power. Feel the thrilling energy of your favorite music and movies from built-in bass ports that pack a powerful punch.

Dolby Atmos®
Hear a plane soar overhead. Feel a crowd swarming past you. Or get carried away by the energy of your go-to dance playlist. Hear extraordinary cinematic sound from all directions with the 3D audio experience of Dolby Atmos®.

MultiBeam™ 3.0
Wherever you're sitting, you'll be in the middle of the action. Our MultiBeam™ 3.0 delivers a wide, cinema-like soundstage that makes every high-speed chase or epic fight scene come alive. The sound beams perfectly fill your room, delivering truly immersive, lifelike, and realistic sound reproduction.
General Specifications
Sound system: 5.0 channel
Power supply: 100 - 240V AC, ~ 50/60Hz
Total speaker power output* (Max. @THD 1%): 450W
Soundbar transducer: 5x (42x80)mm racetrack drivers, 4x 0.75” (20mm) tweeters
HDMI Specification
HDMI video input: 1
HDMI video output (with Enhanced Audio Return Channel, eARC): 1
HDMI HDCP version: 2.3
HDR pass through: HDR10+, Dolby Vision
Audio Specification
Frequency response: 50Hz - 20kHz (-6dB)
Audio inputs: Optical, Bluetooth, USB (USB playback is available in US version. For other versions, USB is for Service only.)
Wireless specification
Bluetooth version: v5.3
Bluetooth profile: A2DP v1.3, AVRCP v1.5
Bluetooth transmitter frequency range: 2400 MHz – 2483.5 MHz
Bluetooth transmitter power: <15 dBm (EIRP)
Wi-Fi network: IEEE 802.11 a/b/g/n/ac/ax (2.4GHz/5GHz) 2.4G Wi-Fi transmitter frequency range: 2412 -2472 MHz (2.4 GHz ISM Band, USA 11 Channels, Europe and others 13 Channels)
2.4G Wi-Fi transmitter power: < 20 dBm (EIRP)
5G Wi-Fi transmitter frequency range: 5.15 - 5.35GHz, 5.470 - 5.725GHz, 5.725 - 5.825GHz
5G Wi-Fi transmitter power: 5.15 - 5.25GHz <23dBm, 5.25 - 5.35GHz & 5.470 - 5.725GHz <20dBm, 5.725 - 5.825GHz <14dBm (EIRP)
Dimensions
Main soundbar dimensions (W x H x D): 940 x 50.5 x 104 mm / 37” x 2.0” x 4.1”
Soundbar weight: 2.9kg / 6.5lbs
Packaging dimensions (W x H x D): 1180 x 120 x 160 mm / 46.5” x 4.7” x 6.3”
Packaging Weight: 4.8kg / 10.6 lbs
* RMS @THD 1%: 225W
