Nobsound NS-01E Mini Tube Headphone Amplifier Stereo HiFi Amp Audio Preamp (Black)

Notice: For this device, its tube is soldered on the board. Thus it can not be pluged out and also be replaced by other tubes. Specifications: Output power: ?1100mW (32ohm) Adapter Headphone Impedance: 18-600ohm Total harmonic distortion: <0.005% SNR: ?110DB Frequency Response: 20Hz-30KHz Volume: (W)50?L)50?H)30 mm (1.97 x 1.97 x 1.18 inches) H: 65 mm with tube and feet Net weight: 80g Colors Available: Black, Silver, and Purple Input and Output Audio Jacks: 3.5 mm Power supply: Input voltage: AC100-240V 50 / 60Hz Output voltage: DC: 6V 2000mA Package includes: 1?NS-01E amp 1?power supply (With the correct plug type for your country) Please note, package does not include audio cables. Connections Front-end (phone / lossless player / MP3 / CD / decoder / PC) ? 3.5mm audio cable ? NS-01E headphone amp ? Headphone / power amplifier / active speaker