Fosi Audio K7 DAC Headphone Amp — USB-C, Bluetooth aptX HD, 4.4mm Balanced

Meet the Fosi Audio K7: a versatile desktop DAC and headphone amplifier

Designed for both HiFi enthusiasts and productive professionals, the K7 serves as a central hub for your desk, handling music, gaming, and calls with ease. Its compact, all‑metal chassis sits neatly on a shelf or monitor stand, while a refined internal chain supports high‑resolution formats for a cleaner, more expressive sound landscape.

At the heart of the K7 is an audiophile‑grade chipset pairing the AK4493S DAC, XMOS XU208 USB processor, and TPA6120 headphone amps. This combo decodes PCM up to 384 kHz / 32‑bit and DSD256, delivering clear highs, balanced mids, and controlled bass without fatigue. With up to 2100 mW of power, even demanding headphones can be driven to reveal subtle details in your favorite tracks.

What you can connect and output

• USB‑C for modern PCs, laptops, and game consoles
• Coaxial and optical for legacy or dedicated setups
• Bluetooth with aptX HD and low‑latency LL for wireless listening
• 4.4 mm balanced, 3.5 mm single‑ended, and RCA outputs for headphones, powered speakers, or amplifiers
• 3.5 mm microphone input for voice chat or streaming

Smart, user‑friendly design

• Dual large control knobs and five shortcut buttons for quick access
• Angled chassis and a high‑resolution display that shows status at a glance
• Durable aluminum alloy build with EMI shielding for lasting performance

Why consider the K7 for your workspace or gaming rig

The K7 is more than a DAC and amp—it's a flexible upgrade for listening, gaming, and communication. You may notice tighter imaging in games, richer vocal tones in calls, and a more immersive music presentation, all without replacing your existing gear.

Note: Benefits described here reflect typical outcomes based on the feature set and common use cases. Individual results vary with headphone choice and room acoustics.

Real‑world use cases

Music lovers can unlock nuanced textures in high‑fidelity recordings, while gamers may enjoy more precise positional cues. In video calls or streams, the K7 can help deliver clearer voices with robust headroom for dynamic content.

Quality you can sense

The metal chassis, tactile knobs, and a responsive display convey a premium feel as you adjust sources, volume, and balance. The K7 is designed to be a flexible, reliable upgrade for a wide range of desktop setups.