Does the volume control effect sound quality?

10K square wave on every tap (unloaded) of one particular inductive volume control.

http://www.intactaudio.com/forum/files/slagleformer_558.gif

Same test on another popular inductive volume control.

http://www.intactaudio.com/forum/files/0db_129.gif

So yes I have seen the high frequency performance at 10K of a number of inductive volume controls. My take is you cannot lump them all together.

Understanding the nature of square waves, moving to 20Khz in frequency would tell you the same about one and less about the other. Moving to 1Khz would still tell you the same story about far and far more about the other.

dave

Hey Dracule1

Never had a problem with miller effect and inductive volume controls. Mainly because with an autoformer, worst case is at full volume when the output impedance of your source drives the miller directly. As you attenuate the autoformer transforms the excess voltage into current so things just get better. I have seen situations where an autoformer actually extends the bandwidth of a device over a resistive based attenuator because of its ability to increase drive as you attenuate to better deal with things like miller and cable capacitance.

dave