Recommendation for a highly resolving amp


I have Don Sachs 2 tube preamp driving Pass Labs X350.5 driving Sound Lab M545 ESL speakers. I like the sound very much, but when I went to hear my friend’s Spectral system (driving Quad2912 ESL) I realized my system can benefit from having a higher resolution amp. Spectral amps need all Spectral preamp/cabling, which would be quite expensive. What would you recommend?
chungjh

Showing 2 responses by unsound

^Hearing something different and appreciating what it does, is one thing; living with it long term is another.
@chungjh, While not my cup of tea; I have to respect Spectral for being amongst the top of the heap for "resolution".