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TCL S55H vs Samsung HW-B400F/ZA: Which Setup Fits Your Room and TV?

Pick by room layout first: S55H adds a separately positioned, separately powered subwoofer, while B400F keeps its woofer in the soundbar body. For TV setup, both manuals document optical and HDMI ARC/eARC-family routes. TCL explicitly lists Dolby Atmos and DTS Virtual:X; Samsung lists supported formats as LPCM 2-channel, Dolby Audio supporting Dolby Digital, and DTS, and documents Bluetooth TV pairing with a compatible Samsung TV.

Published by Pickoryx · Published 2026-10-02

Source checked 2026-10-02 19:01 UTC

Products compared

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The buying question

Will a separately placed subwoofer and the TCL's documented TV-format options fit your room and TV better than the Samsung's integrated-woofer layout and documented connection routes?

The TCL S55H is a 2.1 setup with a separate wireless subwoofer, while Samsung describes the HW-B400F as a 2.0 soundbar with a built-in woofer; their documented TV inputs and format lists also differ.

Quick verdict

Choose TCL S55H 2.1 Sound Bar if

  • You want a separate subwoofer and have a place and power outlet for it within the manual's recommended distance from the bar.
  • Dolby Atmos or DTS Virtual:X is a specific documented format requirement for your TV setup.

Choose Samsung HW-B400F/ZA B-Series 2.0 Soundbar if

  • You want the integrated-woofer 2.0 layout and a shorter single soundbar body.
  • You have a compatible Samsung TV and want the B400F's manual-documented Bluetooth TV connection.
When the recommendation changes
  • If your TV has only optical output, both manuals document an optical connection, so connection choice alone does not favor either model.
  • If Atmos is a must-have, TCL explicitly lists Dolby Atmos; Samsung's manual lists LPCM 2-channel, Dolby Digital, and DTS but does not list Atmos, so confirm Samsung's handling before buying rather than treating the omission as proof of incompatibility.
  • If you plan Bluetooth TV audio with the Samsung, first confirm your Samsung TV supports Bluetooth soundbar output; its manual documents one Samsung TV at a time.

The differences that matter

Speaker Package And Placement

TCL S55H 2.1 Sound Bar

The S55H is a 2.1 system with a separate wireless subwoofer. TCL lists a 31.89-inch soundbar and a 7.68 × 12.60 × 7.68-inch subwoofer; its details list a separate subwoofer power cord. The manual recommends keeping the subwoofer less than 9.8 feet from the soundbar.[1, 2]

Samsung HW-B400F/ZA B-Series 2.0 Soundbar

Samsung's U.S. B-Series guide describes the HW-B400F as a 2.0 soundbar with a built-in woofer. The HW-B400F/ZA U.S. user guide lists a 25.2 × 2.6 × 4.2-inch soundbar.[3, 4]

What this changes: The TCL requires a second physical placement and a power outlet for its subwoofer as well as room for a longer bar; Samsung's documented woofer is integrated into a shorter single bar. Choose by available shelf, floor, and outlet space, not by an assumed bass or sound-quality winner.[1, 2, 3, 4]

The better fit depends on your priorities

Tv Connection And Audio Formats

TCL S55H 2.1 Sound Bar

TCL lists HDMI eARC, optical, AUX, USB audio playback, Bluetooth music streaming, Dolby Atmos, and DTS Virtual:X for the S55H.[1, 2]

Samsung HW-B400F/ZA B-Series 2.0 Soundbar

The HW-B400F/ZA U.S. guide shows HDMI ARC, optical, and USB playback; it documents Bluetooth pairing with one compatible Samsung TV at a time. Its supported-format list is LPCM 2-channel, Dolby Audio supporting Dolby Digital, and DTS.[4]

What this changes: Both manuals document an optical route, and both document HDMI ARC/eARC-family TV connection. The S55H page explicitly names Atmos and DTS Virtual:X plus AUX; Samsung documents TV Bluetooth for a compatible Samsung TV and lists its supported formats. Match those instructions to your TV outputs and the format of the content you use; Samsung's list not naming Atmos is a reason to verify, not a finding that the feature is absent.[1, 2, 4]

The better fit depends on your priorities

Best for your routine

You specifically want a separate subwoofer and can place it near the soundbar with a power outlet available.

Best fit: TCL S55H 2.1 Sound Bar

Based on listed features, not comparative testing.

The S55H is the documented 2.1 bar-plus-wireless-subwoofer package; its manual recommends less than 9.8 feet between the two units.

You prefer a shorter, single soundbar body with the woofer built in.

Best fit: Samsung HW-B400F/ZA B-Series 2.0 Soundbar

Based on listed features, not comparative testing.

Samsung's U.S. guide describes the B400F as a 2.0 bar with a built-in woofer, and its manual lists a 25.2-inch bar.

You want Bluetooth TV audio from a compatible Samsung television and can confirm its Bluetooth sound-output support.

Best fit: Samsung HW-B400F/ZA B-Series 2.0 Soundbar

Based on listed features, not comparative testing.

The B400F manual gives a Bluetooth TV-pairing procedure for compatible Samsung TVs and limits the connection to one Samsung TV at a time.

Dolby Atmos is a required documented feature in your TV-audio plan.

Best fit: TCL S55H 2.1 Sound Bar

Based on listed features, not comparative testing.

TCL explicitly lists Dolby Atmos for the S55H. The B400F manual lists LPCM 2-channel, Dolby Digital, and DTS; ask Samsung about Atmos support if you are considering the B400F for that requirement.

Value and trade-offs

One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.

A price difference is meaningful only if the separate subwoofer placement or the documented connection and format options matter to your setup; compare the live offers at checkout.

The available price record is stale, so it cannot show whether current offers are unusually low or support purchase-timing advice. Compare current checkout prices when you are ready to buy.

Limitations

  • This is a feature-fit comparison based on manufacturer documentation; no controlled head-to-head acoustic measurements or hands-on testing support a sound-quality, bass, dialogue, or Atmos-effect winner.
  • The Samsung manual lists LPCM 2-channel, Dolby Digital, and DTS but does not list Atmos. Confirm with Samsung if Atmos handling is decisive; this comparison does not treat that omission alone as proof of incompatibility.
  • No comparable current-price history supports a Buy Now/Wait recommendation.

Questions shoppers ask

How much space does the TCL subwoofer need?

The S55H has a separate subwoofer; TCL lists its dimensions as 7.68 × 12.60 × 7.68 inches, gives it a separate power cord, and recommends less than 9.8 feet between the subwoofer and soundbar. Plan for the separate unit rather than treating 'wireless' as power-free.

Can I connect either soundbar to a TV with optical audio?

Yes. The S55H manual shows its optical input and the B400F/ZA manual shows its Digital Audio In (Optical) input. Follow the TV's audio-output settings and select the corresponding source on the soundbar.

Will the B400F connect to any TV over Bluetooth?

The B400F manual documents pairing with a compatible Samsung TV, says to check the TV specifications, and allows one Samsung TV connection at a time. It does not establish Bluetooth TV compatibility for every brand.

Methodology and sources

Compared the exact S55H and HW-B400F/ZA U.S. manufacturer materials for speaker layout, stated dimensions, TV inputs, Bluetooth TV instructions, and listed formats. No paired acoustic measurements or personal listening test was performed.

AI-assisted source research, organization, and draft preparation; Pickoryx did not conduct hands-on testing.

View 4 sources
  1. 1.TCL S55H S Class 2.1 Channel Sound Bar with Dolby Atmos, Wireless Subwoofer, and Bluetooth Music StreamingTCL USA · Official specifications · Source checked 2026-10-02 18:59 UTC
    Evidence used on this page
    • Product/features and configuration lines 262-285; exact S55H model and specifications lines 408-481; accessory/power-cord and dimensions lines 499-562.: Exact TCL USA S55H product page. Lists 2.1 configuration, Dolby Atmos and DTS Virtual:X (not plain DTS:X), HDMI eARC, optical, AUX, USB playback, Bluetooth music, separate wireless subwoofer, power cords, and stated dimensions.
  2. 2.S55H User Manual (U.S.)TCL North America Support · Official support · Source checked 2026-10-02 19:01 UTC
    Evidence used on this page
    • Printed p. 14 (physical PDF p. 15) for the subwoofer placement recommendation (<9.8 ft from the soundbar); printed pp. 22–23 (physical PDF pp. 23–24) for HDMI eARC/ARC; printed p. 25 (physical PDF p. 26) for optical; printed p. 26 (physical PDF p. 27) for AUX; printed p. 35 (physical PDF p. 36) for USB playback. The PDF cover identifies S55H and the TCL U.S. support S-Series manual index links this model to the guide.: U.S. S55H manual linked from TCL U.S. S Series user-manual listing. It recommends centering the soundbar below the TV and placing the subwoofer within 9.8 feet; it documents eARC/ARC, optical, AUX and USB procedures.
  3. 3.Soundbar Buying Guide: U.S. B-Series lineupSamsung Electronics America · Official support · Source checked 2026-10-02 18:59 UTC
    Evidence used on this page
    • U.S. B-Series lineup table, lines 124-140, B400F column.: Samsung’s U.S. B-Series guide lists the HW-B400F as 2.0-channel sound with a built-in woofer.
  4. 4.HW-B400F/ZA User Guide (English, U.S. edition)Samsung Electronics America · Official specifications · Source checked 2026-10-02 18:56 UTC
    Evidence used on this page
    • PDF p. 1 model cover; pp. 8-9 panel/ports; pp. 18-20 optical, ARC and TV output format guidance; pp. 21-22 Samsung TV Bluetooth procedure; p. 37 supported play formats and dimensions; pp. 38-39 U.S. warranty/support.: The official HW-B400F user guide shows HDMI ARC, optical and USB connections, compatible Samsung-TV Bluetooth pairing, supported play formats, and stated dimensions. Its closing pages provide a U.S.-only warranty and Samsung U.S. support contact.