I am feeding my 57s with a Quad 303 and love the musicality of the pair. What’s an upgrade with more detail, air, instrument separation, yet same musicality?
EBay seller otsonline has the Bedini 25/25 listed at $1599 + $50 shipping. Maybe he would take a bit less? That's the first one I've seen with the 19" rack panel. Plus it has new filter caps. Certainly a rare amp! I still have mine which I bought new in 1981 from Innovative Audio in Brooklyn Heights. Mine is awaiting new ps caps.
But any quality power amp will need a decent preamp to go with it.
Depending on what you are using as a pre, it may be worth upgrading that before the 303 which, while not the last word in transparency, does work well with 57s.
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