I noticed a thread for Quad ESL but not their electronics so here is the place for Quad fans to own upto their affliction Here is my late Fidele modified Quad 34 and Quad serviced 405-2 both with RCA sockets. Another of an earlier din equipped 34 and 405-1. I love the industrial design and clever modular build of the 405 amps. The sound is smooth, controlled and non fatiguing and surprisingly revealing of whatever is upstream. It works very well with Tannoy and Rogers speakers and