I have a Audiocontrol Four1 EQ/Linedriver and im having a output problem.

I want to make sure the output from both sides of the unit are equal. It has a built in line driver and setting that up was no problem. Its just the gains on the line driver are seperate (Left and Right) and I was wondering if there was a way to measure the output from the RCAs to see if im getting the same output on both sides.

Maybe with a DDM?

I have had it for a min, but the left/right seperate gain makes it hard to match up the sides esp if im running a amp that has seperate left/right gain input controls itself.

Any help is apperciate, thanks!!