Pathos Aurium headphone amplifier Pure class A, tube pre stage and MOS-FET power stage, zero feedback, the Aurium performs what audiophiles are used to from Pathos: exquisite musicality, transparency, dynamics and total lack of listening fatigue. Flexibility is granted by the possibility to adjust output impedance from 16 to 1,000 Ohm, in order to provide a perfect interface with any kind of headphone. The volume control - a critical component in every amp - is operated by means of a high precision Burr-Brown device. A separate power supply keeps hum and harmful magnetic fields away from the delicate audio circuitry. Pathos Aurium headphone amplifier Specs Output power: 3,6W @ 32 Ohm, Class A zero feedbackOutput Inpedance: 0,5 OhmOutput level:>7V RMS maxFrequency response: 10Hz - 80KHzTHD:0,1 %Analog inputs: 1 stereo balanced XLR 3 stereo unbalanced RCA line1 - XLR TAPE1 - RCA line TAPEAnalog outputs RCA line TAPEMax inpult level:3,2+3,2 V RMS balanceMain voltage 90-250 V 50 / 60 HzPower consumption 30 WSize: 200 x 230 x 60 mmWeight 3Kg