Pioneer A-20 Onkyo A-9010 Teac AI-101DA
General
Weight 7.2kg 15.87 lbs 6.5kg 14.33 lbs 1.2kg 2.65 lbs
Dimensions (W x H x D) 435 x 128 x 360 mm 17.13 x 5.04 x 14.17 in 435 x 129.5 x 332.5 mm 17.13 x 5.1 x 13.09 in 182 x 53 x 191 mm 7.17 x 2.09 x 7.52 in
Amplifier
Power Output (8Ω x 2) 30W Continuous power output, 0.05% THD, 20Hz - 20kHz 44W FTC, minimum continuous power, 0.08% THD, 1kHz
Power Output (4Ω x 2) 50W Continuous power output, 0.1% THD, 20Hz - 20kHz 70W FTC, minimum continuous power, 0.7% THD, 1kHz 26W Maximum power output
Total Harmonic Distortion 0.01% 8Ω, 1kHz, Rated Output -3 dB 0.02% 1kHz, 3 ohms, 1W
Damping Factor 95 8Ω, 1kHz
Inputs
Analog Audio
  RCA Stereo 5 inputs rear 4 inputs rear
  Phono (RCA+Ground) MM rear 1 rear
  3.5mm Stereo Jack 1 input front 1 input rear
Digital Audio
  S/PDIF Coaxial 1 input rear
  TOSLINK Optical 1 input rear 2 inputs rear
  USB Type B 1 input rear
Outputs
Analog Audio
  Speakers 2 outputs rear 1 output rear 1 output rear
  Headphones 1/4" 1/4" 1/8"