Construction Details and Features: o Fully Integrated Stereo Amplifier: Input 1 V driving 19 watts, maximum 23 watts output. o Multiple Inputs: Touch control selector switch o Features: Uses EL84 tubes. Fixed and Subwoofer output. Remote control and touch sensor on/off switch. Tube based headphone output. o Custom Wound Audio Transformers with a core of German grain oriented silicon steel. The output transformers are based on the Hafler design. o Exact Bias System: Top panel bias testing terminal with bias adjustment controls and built in meter. Rated Output Power: 19 W per channel at 8 ohms, 25Hz to 60KHz with EL84 Tubes Frequency Response: (at 1 watt into 8 ohms) 8Hz to 130KHz + 1d Bandwidth: 15Hz to 80KHz + 3dB; 0dB 19W 1KHz Distortion THD: Less than 1% at 20 V output, 28Hz to 15KHz Circuit Type: Fully Balanced differential push pull Input Impedance: 100Kohms Input Sensitivity: 1V at 1KHz for 0 watt outpu Output Impedance: 4 ohms and 8 ohms Negative Feedback: Less than 4.5 dB Noise and Hum: 95dB below rated output Tube Complement: 4 pcs. EL84 power output; 4 pcs. 12AX7A/ECC83 Weight: 32 pounds (14.5 Kg) net, approximately 43 pounds (19.5 Kg) packaged Warranty: Two year limited parts and labor. One year or 1000 hours whichever comes first on Black Ice Audio Tubes.