Picked up an Audio Research Ref 3 this week. Sounds wonderful. Dead silent in spite of being all tube, Class A, zero feedback design.
Here are some pics:
Front faceplate. There is about a 2" size volume number in green vacuum flourescent when turned on so you can easily control and see volume from across the room. All inputs are swtichable and it has a mono and invert polarity button on the remote.
You can see the 6H30 "supertube" (4) in this picture. There are...