U3 PRO Mini Class A Headphone Amplifier HiFi Desktop Amp DC5V

✨ Enhanced Compatibility

Connect effortlessly with 3.5mm AUX / RCA inputs and 3.5mm or 6.35mm headphone outputs. Works with MP3 players, smartphones, tablets, computers, CD players, and more. Supports most headphones for a versatile listening experience.

✅ Built-in Voltage Boost Circuit

Maintains ±14V high voltage operation even when powered by DC 5V, delivering low background noise, wide frequency response, and excellent dynamic range for clear, transparent sound.

✅ Exceptional Output Power

Delivers up to 1500mW @ 32Ω, easily driving low and high-impedance headphones (18-600Ω). Operates in Class A mode with ultra-low distortion, producing warm, delicate, and full-bodied sound.

✅ Classic OP+BUF Architecture

Features OP42 + BUF634 DC amplification and a pluggable op amp socket. Easily upgrade OP42 to OP17, AD797, AD843, AD847, OPA627 for DIY customization and enhanced audiophile performance.

✅ Mini Size, High Value

Compact, stylish, and high-performing, the U3 PRO delivers powerful sound and impressive detail for home or office desktop audio systems. Perfect for audiophiles seeking premium sound in a small footprint.

🌟 Perfect For:

Desktop HiFi and home audio systems

Driving a wide range of headphones (18-600Ω)

Audiophiles who enjoy DIY op amp upgrades

Clean, warm, and detailed Class A sound

✨ Easy Monthly Payments - Pay with Klarna or PayPal Credit for flexible instalments.