I bought this rack compressor at Guitar Center a few weeks ago and have used it maybe once or twice. With the new amp I'm getting I won't be needing a seperate compressor so I'm putting this thing up for sale. This thing has two channel, stereo operation or can be used mono and sounds really smooth. I planned to use it in my live bass rig but I've seen this thing used in recording studios on bass, guitar and vocal tracks. The really cool thing is that it has an "auto" mode that will automatically sets threshold, ratio, attack and release to suit your incoming signal. You can read the specifics about it at their site: http://www.dbxpro.com/266XL.htm I bought this thing for $150 and its honestly still brand new, will come with box, AC adaptor and instructions. I'd like to get $125 shipped. Thanks!