[one_who_rocks]

I just got a new amp. A Polytone Mini-Brute II. It has a knob called "Contour". It says that it "Will boost and cut various frequencies as you rotate the dial". So what frequencies is it boosting or cutting?

[kurtlives]

Contour knobs are usually parametric EQs. Just an active EQ that is more than likely boosting/cutting frequencies in the 1K Hz(ish) range. So your mids essentially...

Some have a slight affect on the gain as well...

[billy16]

My Fender Champ 25 has a contour control on the drive channel. At 1, you're getting all the mids. At 10, mids are gone. To what I can hear, I don't hear it adding any gain.

[kurtlives]

My Fender Champ 25 has a contour control on the drive channel. At 1, you're getting all the mids. At 10, mids are gone. To what I can hear, I don't hear it adding any gain.

I said some have an affect on gain.

Technically more mids means the signal going to the next stage will be able to clip easier and that means more distortion/overdrive.

[billy16]

I was just making an observation about that amp.