Onkyo M-510 Power Amplifier with a fresh restoration: Ultra rare, ultra heavy, and ultra beautiful The cells respond quickly to

The cells respond quickly to peaks and reset to off with no ghosting or dim cells

All functions work properly and the phono section is very impressive

It sounded good and ran cool aside from dirty controls

there are a few imperfections which I tried to detail using ultra-bright lighting

The chassis is original with patina and a few flaws

Onkyo M-510 Power Amplifier with a fresh restoration: Ultra rare, ultra heavy, and ultra beautiful The cells respond quickly toAs 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.