HiBy’s latest USB DAC-AMP the FC4 comes with two ES9218PC DAC chips that support high-resolution 32-Bit audio signals. It achieves a lower distortion rating of 0.0006% and a high SNR value of 123dB. The FPGA section consists of two 45.158MHz and 49.152MHz independently used crystal oscillators.

HiBy FC4 has an all-metal construction. It has a rich, smooth textured finish with physical hardware volume keys available to easily adjust the volume on the go.

HiBy FC4 features dual headphone output ports. The device houses a single-ended 3.5mm and a balanced 4.4mm output port. HiBy has designed the FC4 with a powerful amplification section. The device gets a powerful output rating of up to 340mW @ 32Ω of load.

HiBy FC4 supports 8x MQA unfolding. HiBy FC4 houses a multi-colour RGB indicator light that glows into different colours depending on the bitrate of the active file. It glows into Green, Blue Magenta for MQA signals, Yellow, Aqua, and Orange for PCM signals(different bitrates), White for DSD signals, and Red when the music is paused.


  • Professionally designed audio architecture.
  • Premium Dual DAC arrangement.
  • FPGA=based dual independent crystal oscillators.
  • Dual Headphone outputs(3.5mm Single-ended+4.4mm Balanced).
  • Powerful output.
  • 8x MQA decoding.
  • High-quality USB Receiver supporting 32-Bit/768kHz PCM and native DSD256 signals.
  • Low-power consumption.
  • All-metal construction.
  • Hardware volume control.
  • RGB indicator light.
  • Hi-Res certified.


  • DAC Chipset: 2xES9218PC.
  • Output Power: Up to 340mW(32Ω).
  • THD+N: ≥0.0006%.
  • Noise floor: 1.7uVrms.
  • SNR: 123dB.
  • DNR: 123dB.
  • Crosstalk rejection: 98dB.
  • Frequency response range: 20Hz-90kHz.
  • Weight: 21.7grams.
  • Dimensions: 65.3×22.1×11.9mm.
  • Price: 89$