Overview

The Sony HT-S400 is a 2.1-channel soundbar and wireless subwoofer system built for a straightforward audio upgrade over your TV's built-in speakers. It runs on a 330W total system output and uses Sony's X-Balanced Speaker Units, which use a rectangular diaphragm shape to maximize surface area and cut down on distortion.

Setup is simple: the wireless subwoofer pairs automatically once powered on, and a single HDMI ARC cable links the bar to your TV for both audio and basic remote control. An OLED display window on the bar shows input source, volume, and sound settings at a glance, rather than relying on blinking LED codes.

Compatible Sony BRAVIA TVs can also connect to the HT-S400 wirelessly, and Bluetooth streaming from a phone or tablet works independently of the TV connection.

Simcoe Audio Video Insight

The HT-S400 is a good fit for anyone who wants a noticeable step up in dialogue clarity and bass without adding complexity. The X-Balanced drivers keep vocals clear even when the mix gets busy, and for clients with Sony BRAVIA TVs, the soundbar's settings show up right in the TV's own Quick Settings menu so the TV remote can control both.

Best for the Sony HT-S400: try the "Sound Field" button on the remote for movies. Even in this 2.1 setup, it engages S-Force PRO Front Surround, which uses digital sound field processing to widen the soundstage without adding rear speakers.

More Info

Why the Sony HT-S400 Stands Out

330W Total System Output

Enough volume and dynamic range for movies, sports, and music in small to medium-sized rooms, split between the bar and wireless subwoofer.

160mm Wireless Subwoofer

A dedicated wireless subwoofer with a 160mm driver adds real low-end bass that TV speakers can't reproduce, with no cable to run across the floor.

OLED Status Display

A clear front-facing OLED window shows volume, input, and sound settings at a glance, rather than relying on blinking LED codes.

X-Balanced Speaker Units

The rectangular driver shape increases diaphragm area for punchier bass and helps keep dialogue clear and distinct at higher volumes.

HDMI ARC and Optical Connectivity

Flexible connection options work with both modern TVs (HDMI ARC) and older sets that only have an optical output.

Bluetooth 5.0 Streaming

Stream music from a phone or tablet directly to the soundbar, independent of whatever's connected over HDMI.

Buyer's Guide

Who It's For

• The Simplicity-First Buyer: wants a plug-and-play audio upgrade without navigating apps or Wi-Fi setup.
• The Sony BRAVIA TV Owner: wants the TV and soundbar to work together as one system, controlled by a single remote.
• The Space-Conscious Listener: needs a compact 2.1 system for a bedroom, den, or apartment where a larger setup isn't practical.

How It Compares

The HT-S400 is a dedicated 2.1 system focused on value and simplicity, with no Dolby Atmos or DTS:X processing. If you want object-based surround formats in a similarly compact single bar, Sony's HT-S2000 steps up to 3.1-channel Dolby Atmos and DTS:X with dual built-in subwoofers. If physical up-firing height drivers and a full smart ecosystem matter more than budget, Sony's BRAVIA Theatre Bar 6 or the flagship BRAVIA Theatre Quad are worth a look as well.