Klipsch Flexus Core 300 vs Marshall Heston 120: Which Soundbar Is Better?

Tested using Methodology v1.3

Updated Mar 02, 2026 04:35 PM

This review is in Early access

See Klipsch Flexus Core 300 Review

Channels Locked

Recommended in 2 articles:
Subwoofer
All-In-One

Our Verdict

Klipsch Flexus Core 300

Marshall Heston 120

Full comparison details regarding individual product score sets can be found in the section below

Variants

Flexus Core 300 (Black)

Heston 120 (Black)

Review

See Marshall Heston 120 Review

Check Price

Black

Flexus Core 300

Black

Heston 120

Black

Flexus Core 300

Black

Heston 120

Black

Flexus Core 300

Black

Heston 120

Black

Flexus Core 300

Klipsch

Black

Heston 120

Marshall

Black

Flexus Core 300

Black

Heston 120

Main Differences for

Mixed Usage

Threshold

0.10

Mixed Usage

0.0

JOIN NOW to see main differences

Full Comparison

Mixed Usage

0.0

Dialogue/TV Shows

0.0

Music

0.0

Movies

0.0

Design

Style - Bar

Style photo - bar

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Show Text

Style - Subwoofer

Style photo - sub

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Sub Wireless

Locked

Enclosure

Locked

Show Text

Style - Satellites

Style photo - satellites

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Satellite Wireless

Locked

Show Text

Dimensions - Bar

Dimensions photo - bar

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Width

Lock" (Lock cm)

Height

Lock" (Lock cm)

Depth

Lock" (Lock cm)

Show Text

Dimensions - Subwoofer

Dimensions photo - sub

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Width

N/A

Height

N/A

Depth

N/A

Dimensions - Satellites

Dimensions photo - satellites

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Width

N/A

Height

N/A

Depth

N/A

Mounting

Bar Mounting Holes

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Satellite Mounting Holes

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Mountable Bar

Locked

Bar Brackets Included

Locked

Mountable Satellites

Locked

Satellite Brackets Included

Locked

Show Text

Build Quality

N/A

Build quality photo

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Show Text

In The Box

In The Box photo

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Show Text

Sound

Stereo Frequency Response

N/A

Stereo Setup

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Raw Frequency Response

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Frequency Response Small

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Channels

Locked

Tested Preset

Locked

Slope

Lock

Standard Error

Lock dB

Low-Frequency Extension

Lock Hz

High-Frequency Extension

Lock kHz

Show Text

Stereo Frequency Response With Preliminary Calibration

N/A

Frequency Response Calibrated

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Suggested Preset

Locked

Suggested Bass Setting

Lock

Suggested Treble Setting

Lock

Slope

Lock

Standard Error

Lock dB

Low-Frequency Extension

Lock Hz

High-Frequency Extension

Lock kHz

Show Text

Stereo Soundstage

N/A

Crosstalk

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Crosstalk Error

Lock dB

Show Text

Stereo Dynamics

N/A

Dynamic Range Compression

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

SPL @ Max Volume

Lock dB SPL

DRC @ 90dB

Lock dB

DRC @ Max Volume

Lock dB

Show Text

Center

N/A

Center Setup

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Frequency Response

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Localization

Locked

Slope

Lock

Std. Err.

Lock dB

SPL @ Max Volume

Lock dB SPL

Weighted THD @ 80dB

Lock

Weighted THD @ Max Volume

Lock

Show Text

Surround 5.1

N/A

Surround Setup

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Frequency Response

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Localization

Locked

Slope

Lock

Std. Err.

Lock dB

SPL @ Max Volume

Lock dB SPL

Weighted THD @ 80dB

Lock

Weighted THD @ Max Volume

Lock

7.1 Rears

Locked

Show Text

Height (Atmos)

N/A

Height Setup

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

H Frequency Response

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Localization

Locked

Slope

Lock

Std. Err.

Lock dB

SPL @ Max Volume

Lock dB SPL

Weighted THD @ 80dB

Lock

Weighted THD @ Max Volume

Lock

Show Text

Sound Enhancement Features

N/A

Room Correction

Locked

Dialogue Enhancement

Locked

Auto-Volume/Night Mode

Locked

Subwoofer Level Adjustment

Locked

Bass Adjustment

Locked

Treble Adjustment

Locked

EQ

Locked

Surround Level Adjustment

Locked

Rear Level Adjustment

Locked

Height Level Adjustment

Locked

Virtual Surround

Locked

Show Text

Connectivity

Inputs/Outputs - Bar

Physical Connections Bar Photo 1

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Physical Connections Bar Photo 2

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Optical Audio In

Locked

HDMI Out

Locked

HDMI 2.1 Class Bandwidth

Locked

Full HDMI In

Locked

Analog Audio In 3.5mm (Aux)

Locked

RCA In

Locked

USB for Files

Locked

Ethernet

Locked

Subwoofer Output

Locked

Show Text

Audio Format Support: ARC/eARC

N/A

Dolby Atmos

Locked

Dolby Digital

Locked

Dolby Digital Plus

Locked

Dolby TrueHD

Locked

DTS

Locked

DTS:X

Locked

DTS-HD MA

Locked

PCM Channels

Locked

Show Text

Audio Format Support: HDMI In

N/A

Dolby Atmos

Locked

Dolby Digital

Locked

Dolby Digital Plus

Locked

Dolby TrueHD

Locked

DTS

Locked

DTS:X

Locked

DTS-HD MA

Locked

PCM Channels

Locked

Show Text

Audio Format Support: Optical

N/A

Dolby Digital

Locked

N/A

DTS

Locked

N/A

PCM Channels

Locked

N/A

Show Text

Audio Latency: ARC

N/A

ARC Latency Video

SAMPLE

for videos & test results

SAMPLE

for videos & test results

PCM-2.0 ch

Lock ms

PCM-5.1 ch

Lock ms

Dolby MAT (PCM) Atmos

Lock ms

Dolby Digital

Lock ms

Dolby Digital Plus

Lock ms

Dolby Digital Plus Atmos

Lock ms

Show Text

Audio Latency: HDMI In

N/A

HDMI Latency Video

SAMPLE

for videos & test results

SAMPLE

for videos & test results

PCM-2.0 ch

Lock ms

PCM-5.1 ch

Lock ms

Dolby MAT (PCM) Atmos

Lock ms

Dolby Digital

Lock ms

Dolby Digital Plus

Lock ms

Dolby Digital Plus Atmos

Lock ms

Show Text

Audio Latency: Optical

N/A

Optical Latency Video

SAMPLE

for videos & test results

SAMPLE

for videos & test results

PCM-2.0 ch

Lock ms

N/A

Dolby Digital

Lock ms

N/A

Show Text

Video Passthrough To TV

N/A

1080p Max Refresh Rate

Locked

1080p @ 4:4:4 Max Refresh Rate

Locked

4k Max Refresh Rate

Locked

4k @ 120Hz @ 10-Bit

Locked

4k @ 4:4:4 Max Refresh Rate

Locked

8k Max Refresh Rate

Locked

HDR10 Passthrough

Locked

HDR10+ Passthrough

Locked

Dolby Vision Passthrough

Locked

HDMI Forum VRR Passthrough

Locked

FreeSync Passthrough

Locked

G-SYNC Passthrough

Locked

ALLM Passthrough

Locked

Show Text

Wireless Playback

N/A

Bluetooth

Locked

Wi-Fi Playback

Locked

Chromecast built-in

Locked

Apple AirPlay

Locked

Spotify Connect

Locked

Show Text

Additional Features

Interface

Interface photo

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Display

Locked

Show Text

Bar Controls

Controls photo

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Show Text

Remote

Remote photo

SAMPLE

for pictures & test results

SAMPLE

for pictures & test results

Show Text

Voice Assistants Support

Amazon Alexa

Locked

Google Assistant

Locked

Apple Siri

Locked

Microphone Mute

Locked

Check Price

Black

Flexus Core 300

Black

Heston 120

Black

Flexus Core 300

Black

Heston 120

Black

Flexus Core 300

Black

Heston 120

Black

Flexus Core 300

Klipsch

Black

Heston 120

Marshall

Black

Flexus Core 300

Black

Heston 120