Ultra Low-Noise Headphone Amplifier

The Hephal Prolocutor is an ultra low distortion, ultra low noise headphone amplifier capable of 2 Watts at 8 ohms and 80mW into 600 ohms. Depending on the quality of power supply it can deliver a SNR of better than 120dB with less than 0.00014% THD + N (into 600 ohms).

http://www.noiseengineering.us/hephal-prolocutor.html