Dan has it right. We each hear what we hear. Am willing to try things, like these jumpers, which did not do do much for my MA6600. At least to my ears. However, does not mean they won't work for your integrated amp. No big deal. If they had been $700 rather than $70, would have approached in a completely different manner. A $70 tweak is hardly worth getting excited about one way or the other. Now, a McIntosh classic vs 3D face is an entirely different matter on which one may pontificate. 
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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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