Original Quads (57) - the perfect amp

Quad II with quality glass. I’m running real GEC KT 66s. I did a piece on the web which has links on amps for the 57. I’ve owned mine since 1974 (they’ve been restored by Electrostatic Solutions-- there are several other amps mentioned). When I used them back in the ’70s, I ran various ARC tube amps. The little Quad II sounds better. My pair of amps date from around 1961-- also restored. They aren’t terribly expensive but the tubes can get costly. I don’t know where you can even find OG KT 66s today, though I understand that the one modern one- I forget which-probably Russian- sounds ok.

I’m running rebuilt late 50s EICO HF-35 monos under each speaker. They are a EL34/6L6 design (running 7581A) and sound fantastic.

Basically any 10-35 watt (more if you have protection circuit) push-pull tube amp will work. The Quads reveal more and more detail with improved equipment at every stage.

@whart I ran Quad ll in the 80s with GEC 66s too. Magical midband and sweet as a nut. However, If my aural memory serves me well, I do believe my updated EICOs may solidly outshine them.

The Music Reference RM-10 is perfect for the Quads, as is the Atma-Sphere S-30.

Thanks everyone for your responses, I really appreciate it!