Also, one more comment: Listening to a friends Altecs, the Altecs might require much more substantial amps (with larger power supplys and output transformers) that most 1K amps will not have. The Fi and above mentioned are excellent, but might not have the ultimate control the big woofers in the valencias might need.
Your best bet is to look up what people are uing on Audio Asylum or ask your question there - for SET and tube amps nothing goes over a well matched speaker-amp interface.
Your best bet is to look up what people are uing on Audio Asylum or ask your question there - for SET and tube amps nothing goes over a well matched speaker-amp interface.