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Compact black sound bar with side control knob

BFKK

BFKK Sound Bar Bluetooth 5.0 3.5mm Aux

SKU CH-E412-52FGD

A compact sound bar with four speaker units and dual bass diaphragms connects via Bluetooth 5.0 or 3.5 mm aux and draws power from any USB port

  • Rich sound from four speakers and two bass diaphragms
  • Double-layer neodymium magnets with mica fibre diaphragms
  • Bluetooth 5.0 and 3.5 mm aux wired connections
  • USB powered with no built-in battery
  • Side knob controls all functions

What the sound bar is and who it serves

The BFKK sound bar is a compact USB-powered speaker system built for desktop, laptop, phone, tablet and console users who want richer audio than built-in drivers provide. Four speaker units and two independent bass diaphragms work inside a tuned cavity to lift both high-frequency detail and low-end weight. It suits home offices, bedrooms and casual gaming setups where space is tight. Buyers needing a built-in battery for portable use or a dedicated subwoofer output for larger rooms should look elsewhere.

Sustained-load audio behaviour

Continuous playback draws power directly from the USB source, so output remains stable as long as the host port or adapter supplies adequate current. The double-layer neodymium magnet drivers and mica-fibre diaphragms are engineered to resist thermal compression during long sessions, keeping distortion low even at higher volumes. A single side knob controls power, volume and source selection without software. Systems with current-limited USB ports may clip at peak levels.

Bluetooth 5.0 and 3.5 mm auxiliary limits

Wireless streaming uses Bluetooth 5.0 for a reliable link to phones, tablets and laptops within typical indoor range. The 3.5 mm auxiliary input provides a fallback for devices without Bluetooth or when latency matters. Only one source is active at a time, switched by the side knob. There is no aptX or LDAC support mentioned, so audio quality over Bluetooth follows the standard SBC codec. The USB connection carries power only, not digital audio.

Highlights

  • Rich sound from four speakers and two bass diaphragms
  • Double-layer neodymium magnets with mica fibre diaphragms
  • Bluetooth 5.0 and 3.5 mm aux wired connections
  • USB powered with no built-in battery
  • Side knob controls all functions

Specifications

No published specifications for this item yet.

Questions about this item

How much noise or heat does the sound bar produce when running all day?

The unit has no fan and draws power only through the USB port, so it stays silent and barely warm during continuous use.

What must I already own to power and connect this sound bar?

You need a USB power source such as a computer port or 5 V charger and either a device with Bluetooth 5.0 or a 3.5 mm audio output for the auxiliary cable.

Will the sound bar work alongside my older Xbox or PS4 console?

Yes — the speaker bar accepts audio from Xbox, PS4 and similar devices through Bluetooth 5.0 or the 3.5 mm auxiliary input.

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