Absolutely the McIntosh MC275, new at $6500 retail. I have the first MC275 reissue, the Gordon Gow Commemorative, since new in 1993. Specs are 75 WPC but routinely tests at 90 WPC plus. Believe it or not, I’m only on my third set of output tubes which are 4 KT88 or 6550’s. The amp runs rather cool for a big tube amp, putting out less heat than my old Krell KST-100 and pulls half the current at just over 3 amps for the Mac. Stellar job driving several sets of speakers over the years including hard to drive electrostatics Martin-Logan Quests and CLS II. The amp is true balanced in that the phase splitter (the first tube in this design, a 12AX7) is bypassed and each phase has its own signal path until they meet at the output transformer primary. That explains the 11 tubes rather than the 7 tubes (like a Conrad-Johnson Premier 8B) that is usual in tube amps with this output. The amp is designed to converted to a monoblock by simply paralleling the outputs for a whopping 150 watts into 2 ohms (yes, 2 ohms!) 4 and 8 ohms. A simple future upgrade if you decide you need more fist.
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.