I recently replaced my ST100 “Dark,” which is an excellent amplifier, with a pair of monobloc Odyssey Kismet amps, and I am exceptionally pleased. Used with my Rogue RP-7 preamp, I think the solid state amps give me better bass response, especially at lower volume levels, better tonal qualities, and better soundstage and imaging. At least with my Fyne F702 speakers.
Tube amps under $7500
Ready to experiment with combinations never before (or not recently) tried. Step one requires a tube amp. Now looking at Prima Luna EVO 400 which sells for 5K. Any other tube amps I should consider in this price/feature range? Must come in silver with balanced input. For pairing experimentally with various tube and SS preamps. Efficient 4 ohm Legacy speakers (and the room/setup) are the constants.