I am the original owner of these 2 Levinson no20 class A mono amplifiers. This is my second pair. There power output is 100 watts minimum continuous sine-wave into 8 ohms from 20-20KHz with no more than 0.2% THD (FTC) and 200 watts minimum continuous sine-wave power into 4 ohms. Peak output voltage is 40V at rated line voltage. Frequency responce is (-3dB) 4Hz, 140KHz. Input impedance is 50K ohms shunted by 1nF. Voltage gain is 26dB. I have the original owner manuals and Packing materials. The packaging will consist of 2 cartons 27" x 26" x 16" for a total of 198 lbs. I prefer bank transfer or Paypal +3%.