You misinterpreted my entire quoteI think a linear volume knob would be awkward to operate...
But can you actually hear any difference in sq due to the higher SNR at the lower gain setting? Isnt SNR so high on modern hifi that its way below what a human can actually hear anyway??
Not linear knob, I know most of them is log based. I meant the increments over a certain range worked logarithmically but the top end of scale somehow was boosted above the logarithmic steps.
By SNR here, I was referring to RFI and EMI. The ratio between the "external" noise and the signal strength in the cable (voltage) would determine the SNR. A lower voltage in the cable would mean that the amp would amplify any noise present as well much louder since the ratio would be lower.
...and yes. It can be very audible.