HiBy FC4 USB DAC Headphone Amp — DSD512 PCM768 MQA

The HiBy FC4 is a featherweight portable USB DAC and headphone amplifier that decodes DSD512 and PCM 768kHz, supports MQA unfolding, and delivers refined, studio-grade sound through 3.5mm single-ended and 4.4mm balanced outputs.

Small enough to carry on a keyring and powerful enough to drive demanding headphones, the FC4 pairs advanced DAC hardware with a compact metal-and-translucent body and a 1.1-inch color OLED for clear status at a glance. It combines dual CS43131 DAC chips, femtosecond-grade clocks, and flexible EQ/PEQ controls to bring high-resolution audio and personalized tuning to phones, laptops, and gaming consoles.

How does the FC4 improve my music playback quality?

The FC4 focuses on accurate decoding and jitter reduction to reveal subtle musical details and stable timing. Dual CS43131 DACs and precision oscillators lower noise and jitter, while MQA 8x unfolding and native DSD/PCM support preserve studio information for a more immersive soundstage.

• Dual CS43131 high-performance DACs for wide dynamic range and low distortion
• Two femtosecond-grade clocks (45.1584/49.152MHz) to minimize jitter
• DSD512 and PCM 768kHz/32-bit native decoding for high-resolution playback
• MQA 8X unfolding for more faithful studio rendering

Will it work with my phone, laptop, or console?

The FC4 supports UAC 1.0/2.0 making it broadly compatible with modern phones, computers, and gaming consoles. It can connect to devices that require either UAC 1.0 or 2.0 and offers both single-ended and balanced headphone outputs for flexible hookup options.

• UAC 1.0/2.0 compatibility for Android, Windows, macOS, and many consoles
• 3.5mm single-ended and 4.4mm balanced outputs for varied headphone types
• Compact USB dongle form factor for mobile and desktop setups

How do the EQ and PEQ features help my headphones sound better?

The FC4 ships with eight carefully tuned presets that suit different music styles, letting you switch tonal balance instantly. For finer control, the user-defined parametric EQ (PEQ) adjusts center frequency, gain, and Q to match specific headphone signatures or room preferences.

• Eight factory EQ presets for genres like rock, classical, and pop
• User-defined PEQ for precise frequency, bandwidth, and gain control
• On-device controls and OLED display make changes visible and quick to apply

What physical and interface features make the FC4 convenient?

Weighing just 21 grams, the FC4 blends an aluminum shell with translucent polycarbonate for a futuristic look while staying pocket-friendly. The 1.1-inch color OLED shows sample rate, format, volume, and EQ state so you always know what the dongle is doing.

• Lightweight 21 g aluminum + translucent PC chassis for portability and style
• 1.1-inch color OLED for real-time info on format and settings
• Minimalist menu controls for fast, intuitive operation

Who is this for? The HiBy FC4 is designed for audiophiles and mobile listeners who want true hi-res decoding in a pocket-sized package, gamers seeking clearer sound from consoles, and anyone who wants precise tonal control with both quick presets and advanced PEQ. It’s ideal when you need desktop-quality decoding without a full-sized DAC or when traveling light but uncompromising on sound.