Onkyo M-510 Power Amplifier with a fresh restoration: Ultra rare, ultra heavy, and ultra beautiful tubes The cabinet is in great

The cabinet is in great shape as well

or other shipping / delivery options that can be arranged

and documentation

I cleaned the heads and aligned them according to the service manual specifications

There is one mark on the top tide of the faceplate near the tuning knob and a few of the knobs have signs of gentle use

Onkyo M-510 Power Amplifier with a fresh restoration: Ultra rare, ultra heavy, and ultra beautiful tubes The cabinet is in greatAs rare as it is heavy (insanely), the Onkyo M 510 is a power amp from the golden era of HiFi audio equipment. Onkyo spared no expense when they created their flagship amplifier. The physical build quality is second to none and the electrical design is complex, interesting, and robust. Did I mention its heavy? This massive beast weighs about 150lbs. Onkyo sold a limited number of these puppies in the United States and very few are left in circulation.