I've used a bunch of these. Installed a bunch and retired a few.
Good little desk.
If you are an avid DIYer, look into the schems and start replacing caps and other things on the I/O. I believe you can improve the performance a good bit with a little bit of work.
I agree with the other posters on the PSU. Prob the weakest part of the console.
It is a modular PCB board, so its pretty easy to do a few inputs at a time. This console is part of the line from Allen&Heath that is made in China. So, they cut a lot of corners on some components.
I was in the process of doing that with one of my own GL2200, but decided I would never have the time.
If you have a hard time getting schems for it, let me know, I may be able to find them.
take care
Gil