I've always found I prefer the sound of integrated amps that use 6SN7s in the input/driver/pre stage (sorry I'm not technical on valve amp design) compared to ECC82/3s so I was thinking about adding a yaqin 6SN7 based buffer between my passive and power amp, but then I also thought I could try a pre amp that used these tubes. Or failing that get another integrated that has them in. I would also try 6SL7s on the assumption they sound as good.

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