For sale Graaf GM20 Power amplifier In good cosmetic condition and recently fitted with all new valves less than 10 hours these include a matched quad of 6c33c, a quad of EF184 and a pair of Tesla E88cc.

Recently serviced and upgraded bias trim pots as per John Caswell's recommendation who has spent a lot of time with this power amp. This modification prevents the amplifier bias drifting and is incredibly stable.

I have this currently in my system playing and it sounds phenomenal.

I have several matched Quads of 6c33c tubes available to the new owner by separate negotiation.

Anyone who is serious about purchasing is welcome to bring some of your favourite tunes and come and have a li...   read more