Flexus Core 300

Released 2025

A 5.1.2-channel soundbar with Dirac Live room correction, HDMI passthrough and network music streaming, expandable with separate Flexus subwoofers and surrounds.

Type: Soundbar
Atmos: Yes
Connects by: Wi-Fi, Bluetooth and HDMI
Battery: –
Weight: 8.5 kg

Dolby Atmos

What reviewers say

Reviewers praise the immersive, detailed sound and the improvement in dialogue and bass control from Dirac Live. Both tested optional subwoofers and surrounds; SoundStage also found the bar effective alone. TechRadar considers the system expensive and calibration finicky, while SoundStage judges it good value and finds the rear height channels add little.

From techradar.com and soundstagesimplifi.com

Specifications

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Sound

Type: Soundbar
Channels: 5.1.2
Dolby Atmos: Yes
Drivers: Four 2.25 in front drivers, one 0.75 in horn-loaded tweeter, four 4 in top woofers, two 2.25 in discrete up-firing drivers and two 2.25 in side drivers, from the current V08 specification table. Its introductory prose instead calls the side drivers 2.5 in.
Amplifiers: Powered by Onkyo
Frequency response: 43 Hz–20 kHz; maximum acoustic output 106 dB (maker)
Audio formats: PCM; LPCM up to eight channels; Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos; DTS, DTS-HD and DTS:X
Room tuning: Dirac Live with supplied measurement microphone; the included licence covers below 500 Hz, with a paid full-range upgrade (SoundStage). Movie/Music modes; three-band EQ; dialogue and night modes.

Connections

Wi-Fi: Yes
Bluetooth: Yes
AirPlay: Yes
HDMI eARC: Yes
Voice assistants: None
Wi-Fi: Wi-Fi and Ethernet network connection
Ports: HDMI 2.1 passthrough input; HDMI eARC output; digital optical; USB-C service connection; USB-A Flexus transmitter connection; Ethernet; microphone input; RCA subwoofer output
Streaming: Apple AirPlay 2; Google Cast; Spotify Connect; TIDAL Connect; QPlay; Bluetooth
Multi-room: Optional Flexus Sub 100/Sub 200 and Surr 100/Surr 200; supports up to two wireless subwoofers and two surround speakers
App: Klipsch Connect Plus for iOS and Android; EQ, channel levels, room correction, streaming set-up and firmware updates

Design

Weight: 8.5 kg
Controls: Top power, source and volume controls; supplied BLE backlit remote; dimmable alphanumeric display. No built-in voice assistant (TechRadar).
Microphones: Supplied external measurement microphone for room correction
Mounting: 1/4 in × 20 threaded insert; optional slim-depth wall bracket sold separately
Size: 3 1/16 × 54 × 4 15/16 in (7.8 × 137.2 × 12.6 cm), H × W × D, from the current V08 sheet; sealed plastic and metal enclosure. TechRadar reports first retail availability in September 2025; the earlier winter launch target was preliminary.
Colours: Black with ebony vinyl finish; Walnut option
In the box: Soundbar, BLE backlit remote, two AAA batteries, region-specific 2 m power cord, 1.5 m HDMI cable, measurement microphone and user manual

Pros and cons

Pros

Dolby Atmos and DTS:X decoding with up-firing and side-firing drivers
Dirac Live room correction with a supplied measurement microphone
HDMI passthrough, Wi-Fi streaming and a wired subwoofer output

Cons

137.2 cm wide enclosure needs substantial space
External subwoofers, rear speakers and wall bracket sold separately
Full-range Dirac correction is a separate upgrade over the supplied limited-bandwidth licence

Closest rivals

Model	Type	Atmos	Connects by	Battery	Weight	Released
MarshallHeston 120	Soundbar	Yes	Wi-Fi, Bluetooth and HDMI	–	7.04 kg	2025
LGSound Suite H7	Soundbar	Yes	Wi-Fi, Bluetooth and HDMI	–	7.7 kg	Jan 2026
KEFXIO	Soundbar	Yes	Wi-Fi, Bluetooth and HDMI	–	10.5 kg	Jul 2025

Sources

Photo: Klipsch

Flexus Core 300 in Black, angled front and top: Klipsch
Flexus Core 300 in Black, end grille: Klipsch
Flexus Core 300 in Black, rear connections: Klipsch
Flexus Core 300 in Black, top speaker grilles and controls: Klipsch
Flexus Core 300 Walnut variant, underside and mounting points: Klipsch

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