Bill,
I have done some checking on the Rolls CL151 GLC Limiter/Compressor and found some negative reports. I am enclosing one. I have had problems trying to bring up other reviews. ZZSounds speaks of reviews but I was unable to bring any of them up. Anyway, here is what one owner had to say about it.
One Owner's Opinion
Feature:
This unit is built in a bomber case and has higher quality buttons, but inside is junk. There is also no jack for an external power supply
Value:
nice case and buttons, but otherwise a big waste of money
Sound:
Like the other reviewers, I found the sound quality poor, lots of pops, buzzes, and background noise, and loud speaker damaging pops when you hit the buttons.
The above does not mean that I won't eventually buy it but I certainly want to read other reviews. Also, I have found it as low as $78.00
Mark