Original Futterman H3. Quicksilver Minimite Monoblocks, Antique Sound Lab AV 25 Monoblocks.
The Bedini 25/25 is known for its synergy with the ESL 57. What may not be as well known is that the Futterman H3 OTL was also highly recommended for use with the Quad 57. I’ve never owned a pair of 57’s, but I did own an H3 and early 25/25 which I used to drive 15 ohm Rogers LS3/5A’s. These we’re both successful pairings.
Owning both the ASL AV25 and QuickSilver MM mono's, I would think that they would also have a great synergy with the ESL 57.