Multi-voltage power supply input 115/230 V~. Audio input with 2 automatic sensitivities from 500 mV to 0.75 V in Line IN, and 3 V~ in Audio EGi PIN with activation at +4.5 Vdc. Differents powers ON and OFF STBY: - Through EGi PIN AUDIO INPUT. - Automatic audio detection by LINE (AUDIO INPUT) on position (POWER ON CONTROL, AUTO). - Power ON fixed by normally closed contact (POWER ON CONTROL, ON). Class D digital audio with low distortion. High consumption efficiency and low heat transmission, in a small size. Finish: aluminium.