I was very pleased with my Ref 9K being pushed with 20wpc of Class A push-pull tubes. The Ref 8K, 7K & 5K are slightly more efficient (88 & 89db vs 87db with the 9K). 7wpc might work in a small space at low volume.
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Glenn...
Clearaudio SM Pro Focal Bathys JLA 10" Dominion Kuzma Stabi S w/MC & MM Magnepan 1,7i McIntosh MA8950 Oppo 203 Roon Nucleus Rose Hifi RS150B Shunyata Gemini-4 Sony ST-A6B, TA-F6B & PS-X75 Sorane SA1.2 & TA-1L Stillpoints LP1v2 WW Pt, Au & Ag
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