Samsung is clearing out its 2025 soundbar lineup during Prime Day, and the HW-B400F has landed at a price that undercuts Amazon’s own audio hardware. It’s sitting at $79, knocked down from $139, an all-time low by a significant margin for this 2.0ch soundbar with built-in subwoofer, 40W output, HDMI connectivity, Surround Sound Expansion, and Voice Enhance mode. No Prime membership required.
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A built-in subwoofer at a price that usually gets you neither
Most soundbars under $100 offer a single speaker bar with no bass driver, which produces thin, flat audio that’s marginally better than a TV’s built-in speakers but not by enough to justify the purchase. The Samsung HW-B400F includes a built-in subwoofer in the same unit, which means the bass is handled by a dedicated driver rather than the main speaker trying to reproduce low frequencies it’s not designed for. The result is balanced sound with actual low-end presence at a price point where that combination almost never exists.
Voice Enhance mode automatically amplifies dialogue so conversations and narration stay clear over music beds and effects, which is the feature most people actually want from a soundbar when they’re watching TV and missing what characters are saying. Night mode lowers the volume and minimizes bass for late-night viewing without waking everyone else in the house, which is a practical detail that cheaper soundbars in this range consistently skip.
