Dared I30 Tube Integrated amplifier 6L6G/EL34 Tube integrated amps with 4 inputs, and Headphone output Gold PCB and Gold tube sockets, pure silver signal wires Allen Bradley NOS key resistors, audiophile grade coupling caps Dual power setting: 110 volts and 230 volts, with Analog output meter Internal DAC (Digital-Analog-Converter) so you can connect this amp to computer (USB)