Harman Kardon Onyx Studio 9 vs Sony HT-S400 | 330W
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Harman Kardon Onyx Studio 9 |  Sony HT-S400 | 330W |
|---|---|---|
| Price | KSh 27,500.00 | KSh 29,000.00 |
| Battery | 4722mAh Li-ion, 3.63V, up to 8 hours playtime | N/A — mains-powered product |
| Weight | 3.36kg | Main unit: 5 lb 5 oz; subwoofer: 16 lb 2 oz |
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Full specifications
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General
| Specification | Harman Kardon Onyx Studio 9 | Sony HT-S400 | 330W |
|---|---|---|
| Brand | Harman Kardon | Sony |
| Model | Onyx Studio 9 | HT-S400 |
| Type | Portable Bluetooth Speaker | Soundbar with Subwoofer |
| Color | Black, Gray | — |
Design
| Specification | Harman Kardon Onyx Studio 9 | Sony HT-S400 | 330W |
|---|---|---|
| Dimensions | 289.2 x 287.5 x 130 mm | Main unit: 35.5 × 2.63 × 3.5 in; subwoofer: 7.63 × 15.25 × 15.75 in |
| Weight | 3.36kg | Main unit: 5 lb 5 oz; subwoofer: 16 lb 2 oz |
Battery & Charging
| Specification | Harman Kardon Onyx Studio 9 | Sony HT-S400 | 330W |
|---|---|---|
| Battery | 4722mAh Li-ion, 3.63V, up to 8 hours playtime | N/A — mains-powered product |
Connectivity
| Specification | Harman Kardon Onyx Studio 9 | Sony HT-S400 | 330W |
|---|---|---|
| Bluetooth | Version 5.3, A2DP 1.4, AVRCP 1.6 | Bluetooth 5.0 receiver |
| Wi-Fi | N/A — Bluetooth-only portable speaker | — |
| Wired Inputs | USB-C (5V | Optical audio input; USB Type-A (for updates only) |
| HDMI | N/A — portable speaker design | 0 HDMI inputs / 1 HDMI ARC output |
| USB | USB-C (5V/2.1A), multi-device pairing, Auracast multi-speaker support | Type-A; update only |
| Microphone / Guitar Inputs | N/A — no microphone or guitar input | N/A — no microphone or guitar input |
| Multi-Speaker / Stereo Pairing | Pair with another Onyx Studio 9 via Auracast for a wider, stereo soundstage. | — |
| Bluetooth Profiles / Codecs | — | SBC |
Features
| Specification | Harman Kardon Onyx Studio 9 | Sony HT-S400 | 330W |
|---|---|---|
| Voice Assistant | N/A — no built-in voice assistant | — |
| Lightshow | N/A — no party lightshow | N/A — no party lightshow |
| Party Features | N/A — not a party-speaker product | N/A — not a party-speaker product |
| Home Cinema Features | N/A — not a home-cinema speaker | 2.1ch soundbar; wireless subwoofer; S-Force PRO Front Surround; HDMI ARC |
| Special Features | Self-tuning, Constant Sound Field technology, Harman Kardon One app, speakerphone, 7-band EQ | TV wireless connection; Voice mode; Night mode |
Audio
| Specification | Harman Kardon Onyx Studio 9 | Sony HT-S400 | 330W |
|---|---|---|
| Drivers | 1 x 120mm woofer, 3 x 20mm tweeters | — |
| Frequency Response | 50Hz – 20kHz (-6dB) | — |
| Total Power Output | 50W RMS | 330 W |
| Signal-to-Noise Ratio | > 80dB | — |
| Speaker Configuration | — | 2.1ch (wireless subwoofer) |
| Amplifier | — | Digital Amplifier, S-Master |
| Audio Channels | — | 2.1ch |
| Sound Modes / EQ | — | Sound Field; Night Mode; Voice Mode |
| Audio Features | — | S-Force PRO Front Surround; Dolby Digital; Dolby Dual mono; LPCM 2ch; TV wireless connection |
Power & Battery
| Specification | Harman Kardon Onyx Studio 9 | Sony HT-S400 | 330W |
|---|---|---|
| Power Source | Rechargeable battery / USB charging | AC mains |
| Charging Time | 4 hours | — |
| Battery Life | — | N/A — mains-powered product |
| Power Consumption | — | BAR 35 W / SW 20 W; QuickStart BAR 0.5 W / SW 0.5 W |
Design & Controls
| Specification | Harman Kardon Onyx Studio 9 | Sony HT-S400 | 330W |
|---|---|---|
| Materials | 90% recycled aluminum handle, recycled polyester fabric grille, IPX4 splash resistance | — |
| Placement / Mounting | Free-standing portable placement | — |
| Controls | — | Remote control; Voice and Night modes |
What's in the Box
| Specification | Harman Kardon Onyx Studio 9 | Sony HT-S400 | 330W |
|---|---|---|
| Speaker / Soundbar | Onyx Studio 9 | 1 × main soundbar |
| Subwoofer | N/A — no subwoofer supplied | 1 × wireless subwoofer |
| Remote Control | N/A — no remote control supplied | Remote control |
| Power Cable | USB charging cable | AC cable |
| Audio / HDMI Cable | N/A | — |
| Mounting Accessories | N/A — portable design | — |
| Other Accessories | N/A | Optical cable; batteries for remote commander |
| Documentation | Quick Start Guide and safety documentation | Instruction Manual; Quick Setup Guide |
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