Doepfer

I have an A-138 exponential (audio) mixer and it seems to be clipping
any signal I put into it at any level setting - I A/B-ed it with the
A-138 polarizing mixer I have which is very clean in comparison.

I can't tell if this just happened recently or has been like this.

A couple things: I've been using headphones with the mixer, and
sometimes have clipped signals on purpose for effect (it seems to clip
standard levels if it goes over 7)

Anyone ever have this kind of problem and any solutions - or is my
mixer just fried?

thanks - bryan