Fosi Audio SK01 Headphone Amplifier & Preamplifier

The Fosi Audio SK01 Headphone Amplifier & Preamplifier is a compact yet powerful solution for audiophiles seeking pristine sound quality in a space-saving design. Whether you are driving high-impedance studio headphones or sensitive in-ear monitors, this versatile unit delivers exceptional clarity and detail across the entire audio spectrum. Ideal for desktop setups, home studios, or as a refined preamplifier in a hi-fi system, the SK01 bridges the gap between source components and your listening experience with effortless precision.

Technically, the SK01 is engineered to drive headphones with impedances ranging from 16 to 300 ohms, ensuring compatibility with a wide variety of models. It features both 3.5mm and 6.35mm headphone outputs, alongside a 3.5mm line input and output for seamless integration with other audio gear. The frequency response spans 20Hz to 20kHz, capturing every nuance of your music, while total harmonic distortion remains below 0.001% at 1kHz and 770mV, guaranteeing a clean, transparent signal. Power is supplied via a convenient DC 5V USB-C connection, making it easy to incorporate into any modern setup. With its robust build and low-noise performance, the Fosi Audio SK01 is an essential component for discerning listeners who demand accuracy and reliability from their audio chain.