MC-2100 gain knob part #090-017

[McDaddy29]

Here are my amps with the temporary knobs from Tube Depot.
They look/work great...but since I’m OCD (like so many Mc owners), I won’t be able to sleep till I have the correct knobs...

I need new knobs for my 2100. what is the part number from tube depot. Thanks

 

[Refugee]

For substitutes, they don't look too bad. As a new 2100 owner, I would like to know what the gain control is used for. Is it simply a volume type adjust meant?

Gain control and volume are slightly different. The gain controls on the 2100 are there to match the amp to the output range of the pre amp - by adjusting the input sensitivity of the amp. Adjust the gain knobs to a level where your pre amp's volume control seems to have the right sensitivity and the noise floor is optimal. I keep mine at 12:00 as it is paired with a C-26.
There are several posts on this topic in the forum - check 'em out.