More on Amazon.com : http://www.amazon.com/gp/product/B00KGSLX0W?tag=purrfectcatdi-20 <br /> <br />Nobsound? Class A USB Decorder DAC Preamp Tube Headphone Amplifier 110v For US <br /> <br />The main parameters With original 2pcs6E22pcs6N316N5P impedance 18-600 ohms Output power 35 W 600 ohms <br />The level of output max50v RMS The output frequency response 20hz to 20kHz- 3db The output signal-to-noise 109 db A - WTD Total harmonic distortion <br />The USB input CM108 support USB20 DAC TDA1305T Line input national standard double lotus RCA head analog input Line output national standard double lotus RCA analog output <br />Stereo headphone output 635 socket Support system Win 2K Win XP Vista Win 7 3264 Win 8 Mac OS X The input voltage 110V220V AC 5060 Hz Static power 35Watts <br />The host size 230170180 tube 200 Net weight 3kg gross weight 35kg
