JBL Bar 300MK2 5.0-Channel Dolby Atmos Soundbar

The JBL Bar 300MK2 is an all-in-one 5.0-channel soundbar with Dolby Atmos, MultiBeam 3.0 and PureVoice 2.0. Its built-in bass ports and dialogue enhancement are aimed at TV, film and music use without a separate subwoofer, while Wi-Fi, Bluetooth and the JBL ONE app add streaming and sound adjustment options.

At a glance

Dolby Atmos and MultiBeam 3.0 are presented as ways to create a more spacious, surround-style sound field from the single bar.
PureVoice 2.0 adjusts dialogue based on scene ambience and soundbar volume, according to JBL.
Built-in bass ports are intended to provide bass without a separate subwoofer.
Room calibration is designed to tune surround effects to reflections from the room.
The JBL ONE app offers setup, equalizer adjustments, music-service access and software upgrades.
HDMI eARC is claimed to carry uncompressed Dolby Atmos from a compatible TV. An HDMI input is also described as supporting 4K video passthrough.

Price

$399.98Save 27%

Reference price: ~~$549.98~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

All-in-one design avoids requiring a separate subwoofer for the listed setup.
Dialogue processing, room calibration and app-based equalizer adjustments offer several ways to tailor TV sound.
The stated connection options include Bluetooth, Wi-Fi, optical and USB.

Technical specifications

19 specifications

Identity and audio
Brand	JBL
Model	Bar 300MK2
Speaker type	Soundbar
Audio channels	5
Audio output mode	Surround
Maximum output power	450 watts
Frequency response	20 hertz
Audio driver type	Dynamic Driver
Colour	Black

Connectivity and controls
Connections listed	Bluetooth, Wi-Fi, Optical, USB
Control method	Remote

Power and installation
Power configuration	Corded Electric
Mounting types listed	Tabletop Mount, Wall Mount
Dimensions and weight listed	10.41 x 93.98 x 5.08 cm; 2.96 kg
Weight listed	2.96 kg
Enclosure material	Plastic

Other listed features
Additional features	Dolby Enabled, Multi Room Audio, Usb Port
Compatible devices	Gaming Console, Home Theater, Smartphone, Streaming Device, Television
Warranty description	1 Year Manufacturer

What to know before buying

The listing describes a 5.0-channel all-in-one bar and claims built-in bass ports, Dolby Atmos and surround effects. These are manufacturer descriptions, not independent performance measurements. Confirm that your TV and source device support the HDMI eARC or other connection you plan to use.

What’s in the box

Included

JBL Bar 300MK2 soundbar
2 L-shaped wall-mount brackets and wall-mount template
Power cords
1 HDMI cable
Quick start guide and safety instructions
Warranty card
Remote control with 2 batteries

Who is it for?

A good fit for

TV owners seeking an all-in-one soundbar with Dolby Atmos and surround-style processing.
Viewers who want dialogue enhancement and room calibration options.
Listeners who want Bluetooth or Wi-Fi streaming and app-based sound adjustment.

Less suited to

Buyers seeking a listed bundled subwoofer or separate surround speakers.
Buyers who need independently verified acoustic performance or detailed low-frequency measurements.

JBL Bar 300MK2 5.0-Channel Dolby Atmos Soundbar · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 161 ratings

5 stars82%82%
4 stars8%8%
3 stars5%5%
2 stars0%0%
1 star5%5%

Customer feedback highlights sound quality, simulated surround effects and straightforward setup, including wall mounting. Customers also report mixed experiences with connectivity. These impressions are relevant if you plan to rely on the bar’s wireless streaming, but they do not establish how it will behave with a particular home network or TV. Aggregate ratings lean strongly positive, while a smaller share are low ratings, so the overall score does not capture every buyer’s experience.

Positive themes

Feedback describes the sound as good and setup as straightforward.
Customers report that the wall mount is easy to install.

Mixed feedback

Connectivity experiences are reported as mixed.

Frequently asked questions

Does the JBL Bar 300MK2 include a separate subwoofer?

The product is described as an all-in-one soundbar with built-in bass ports and no separate subwoofer mentioned in its listed configuration.

Can it connect to a TV using HDMI eARC?

JBL claims HDMI eARC support for uncompressed Dolby Atmos through a single HDMI cable. Check that your TV supports eARC and confirm the required cable and connection for your setup.

Can the soundbar be wall-mounted?

Wall mounting is listed as an option. The manufacturer’s package list also names two L-shaped wall-mount brackets and a wall-mount template.

What can the JBL ONE app do?

The listing says the app supports setup, equalizer customization, music-app browsing and software upgrades.