Short answer: the Hisense AX3120Q. It ranks #5 of 16 soundbars with a subwoofer by sound quality, rated 3.5/5, at $249.99; the Sony HT-S400 ranks #12, rated 3.4/5, and costs $258, which makes this an easy call rather than a real tradeoff.
What the Hisense AX3120Q does well: The AX3120Q brings up-firing Atmos drivers and a center channel, so dialogue stays clear and overhead effects are genuinely audible in films. It keeps a wired aux input, which the Sony HT-S400 lacks. The catch: The wireless subwoofer is the weak link, sounding clumsy and slightly out of step with music.
What the Sony HT-S400 does well: The HT-S400 pairs a slim bar with a wireless subwoofer, so movies get real low end without wires across the room. The tradeoff: It has no Atmos or DTS:X and only HDMI ARC, so lossless and height formats are out.
Buy the Hisense AX3120Q. It is rated higher for sound quality than the Sony HT-S400 and costs less, so only choose the other one for a particular feature it does better.
Want more options? Browse the full TV Soundbars rankings.
The AX3120Q brings up-firing Atmos drivers and a center channel, so dialogue stays clear and overhead effects are genuinely audible in films.
The HT-S400 pairs a slim bar with a wireless subwoofer, so movies get real low end without wires across the room.
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Specifications Side By Side
| Hisense AX3120Q | Sony HT-S400 | |
|---|---|---|
| Price | $249.99 | $258.00 |
| Ranked | #5 of 16 in Soundbars With a Subwoofer | #12 of 16 in Soundbars With a Subwoofer |
| Amplifier Power | 440W total | 330W total |
| App | No | No |
| Aux Input | Yes | No |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.0 |
| Channels | 3.1.2 | 2.1 |
| DTS:X | Yes | No |
| Dimensions | 2.2”H x 40.2”W x 4.3”D (57 x 1020 x 108 mm) | 2.5”H x 35.4”W x 3.5”D (64 x 900 x 88 mm) |
| Dolby Atmos | Yes (up-firing drivers) | No |
| Drivers | Bar: 7 drivers (5 front-firing, 2 up-firing); Sub: 6.5” woofer | Bar: 2 X-Balanced speaker units; Sub: 6.3” (160 mm) woofer |
| HDMI Input | 1 | No |
| HDMI eARC | Yes | ARC only |
| Included Subwoofer | Wireless, 6.5” driver | Wireless, 6.3” driver |
| Optical Input | Yes | Yes |
| Rear Speakers | No | No |
| Room Correction | Yes (Room Fitting, AI EQ) | No |
| Subwoofer Dimensions | 335H x 160W x 335D mm | 387H x 192W x 400D mm |
| Subwoofer Weight | 5.5 kg | 7.3 kg |
| Voice Assistants | No | No |
| Weight | 6 lbs (2.7 kg) | 5.3 lbs (2.4 kg) |
| Wi-Fi | No | No |
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