Pioneer M-22 M22 Classe A - HI-END Top Vintage. tested and fully functional. Tested for a few hours. considered one of the best class A amplifiers ever produced Not repaired, not refurbished. All parts/components are original (except bias trimmer) (often the ones for sale are incomplete, modified, repainted… this one is original.) some marks, rust and signs of age. The speaker terminals are incomplete and the plastic is crystallized. The 33000 uf capacitors is in excellent conditions, the “plastic cover” is not damaged. Power supplies with good serigraphs. Stable currrent at 850mV Balance current stable 80mV Original Sanken transistor, original “nippon chemicon”cap. Great and amazing amp!! 100V !!!! The object is original and functional, given its age it is not possible to guarantee perfect functioning over a long period. A full restoration is recommended. I prefer to leave it original and functional and the customer will decide what modifications to make. The amplifier is tested and checked in every component. All out-of-tolerance components have been replaced. The original components are changed only if they are out of tolerance. Internally it has been cleaned and contacts of all connections have been cleaned. The trim-pots are always replaced and the idle current and DC balance current on the power outputs adjusted. No external restoration is performed. Aesthetically it needs restoration, electronically it is perfect. It could be a good opportunity to have it at a good price and decide whether to use it like this or to restore it. Thanks for looking!

Pioneer M-22 M22 Classe A - HI-END Top Vintage. tested and fully functional. Tested for a few hours. considered one of the best class A amplifiers ever produced Not repaired, not refurbished. All parts/components are original (except bias trimmer) (often the ones for sale are incomplete, modified, repainted… this one is original.) some marks, rust and signs of age. The speaker terminals are incomplete and the plastic is crystallized. The 33000 uf capacitors is in excellent conditions, the “plastic cover” is not damaged. Power supplies with good serigraphs. Stable currrent at 850mV Balance current stable 80mV Original Sanken transistor, original “nippon chemicon”cap. Great and amazing amp!! 100V !!!! The object is original and functional, given its age it is not possible to guarantee perfect functioning over a long period. A full restoration is recommended. I prefer to leave it original and functional and the customer will decide what modifications to make. Aesthetically it needs restoration, electronically it is perfect. It could be a good opportunity to have it at a good price and decide whether to use it like this or to restore it. Thanks for looking!