Separate volume controls for left & right channels

One of the advantages is better channel separation, or if you want to control right/left without a balance control.

In theory they are better, in practice I agree with Wilsynet; I had one and it drove me crazy.

Thank you for your answers, now it makes sense. Cheers

+1 Wilsynet and Stanwal. I dreaded mine after the first month of use, now long gone. I laugh when I see them now.

Some did/do it like they used to in the early stereo days where they were stacked them (volume), on the same shaft with split knob. If they had good friction it worked good, except in some cases when you turned it all the way down, one channel still had to much volume in one channel.