M-504 in Immaculate condition. Amazing condition, see photos. I cannot call something this old as MINT, but if there was a grade for used gear, this would be up there with the best! Following was done in preparation to sell: ServicedTestedBias setDC off-set checkedMeters Calibrated Additionally, the following upgrades/ refreshes have been done:Green LED kit replaces the worn-out lamps 5 way PREMIUM gold plated Banana speaker posts installed on both Speaker A and B. This unit looks VERY clean on the inside, Little to no dust or corrosion, it really looks very good.!

M-504 in excellent condition. Couple of things worth noting: The previous owner scratched some number on the top (see in photo). Its not blaring, but at certain angles visible. The other thing I noted, on the top left corner of the left meter, the glass is chipped a little. You have to bend down and look up to notice it, otherwise you would not know. Following was done in preparation to sell: ServicedTestedBias setDC off-set checkedMeters Calibrated Additionally, the following upgrades/ refreshes have been done:Green LED kit replaces the worn out lamps 5 way Banana speaker posts installed on both Speaker A and B. This unit has all factory OEM outputs and drivers, does not look like the amplifier section been repaired.

Onkyo Integra M504. Plays fine. Selling as is due to age.