The first and probably the world's only headphone amplifier with Line, MM / MC switchable phono input. Made for the greatest music lovers and audiophiles. Special design for the best handsets. Polish engineering idea Class A amplifier Two completely separate mono channels Two separate voltage stabilizers Relay for delayed switch handsets Regulators for subjective correction of sound. Powered by unbalanced power supply to provide the same voltage and current values for both channels Large illuminated knob to adjust the volume All encased in a stylish robust aluminum housing. Fully handmade and tested in Poland.