While I do not have one of Dennis' new amps, I do listen to his 20wpc Class A PP Cary Rocket 88. I've rolled GL KT88s, GEC KT88s, GL KT77s, Tung-Sol 7581a & Tung-Sol EL34s. All have sounded great and I have listed them in the order I prefer them, though I would say if I gave them a rating out of 100 they would be 100, 99, 98, 98 & 97. The KT88s sound a bit more 'powerful' while the others all have a slightly sweeter mid-range for vocals. They are so close that I can happily listen to any of them.
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Glenn...
Canton Reference 9 Clearaudio SM Pro Focal Bathys JLA 10" Dominion Kuzma Stabi S w/MC & MM Magnepan 1,7i McIntosh MA8950 & MR88 Oppo 203 Roon Nucleus Rose Hifi RS150B Shunyata Gemini-4 Sony ST-A6B, TA-F6B, ST-J75 & PS-X75 Sorane SA1.2 & TA-1L Stillpoints LP1v2 WW Pt, Au & Ag
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