Hey there all!

I posted this in another forum to no avail. just joined up here. 


I have a Ceriatone OTS 50 and I'm running a digitech RP100 though the loop.

It seems the Master Volume has no increase when turning it up.

I run a TC HOF reverb and this runs fine through the loop, the master volume works like it should. I ran my TC Dark Matter through the loop, and I have the same problem as the digitech.
I'm almost 100% sure this poblem has only just started happening, as I have been using the amp with the RP in the loop for ages and never noticed this problem until now.

Am I missing something? Do I need a Kleinulator? I have seen that "pickmaster" guy running his RP with what I assume is without my issue. I run the output of the RP at 99% like "pickmaster" has recommended for full volume.
I'm at a total loss with this?

Any ideas would be appreciated!

Cheers!