What can I say, 9 watts of class A power (@ 40 ohm), True Mono design, 5 inputs, Four-channel 100 steps digitally controlled relay-based volume control, Big Blue LED’s, Big black box that weighs in at about 36 lbs, Large brushed aluminum volume knob and “The Remote” is the nicest piece of milled aluminum with soft clicky buttons you ever saw (or felt). Very powerful amp for your large (or small) high ohm dynamic driver or planer magnetic headphones. Doubles as a preamp, Cool. This unit shipped from Audio-gd in Jan 19. I am second owner. $1100, might consider trades.