Hi,
I'm trying to figure out how variable resistor on this scheme should be connected to it, cause I've never seen vr symbol like this before. On this scheme is Mid and Bass resistors. Can anyone explain how to do that with the actual potentiometer, cause there are just 2 pins on the scheme instead of 3 like on the Gain. Thanks

Hi,
I found a scheme for a Marshall 5010 ss amplifier, that I'd want to make. There is a problem, that I don't know which operational amplifier should exactly be according to this scheme. There are two of them and both of them aren't named. Does anybody know what should it be?
Thanks
P.S. If I wrote anything wrong and you don't understand the question, write me about it and I'll write it again. English isn't my 1st language.