Originally Posted by Bassmike62
There's litterally millions of threads here on the subject and they all include this link at one point or another: http://www.ovnilab.com/
, by TBer Bongomania.
That's the place to start.
Probably the place to end too. It was for me and I ended up getting the Markbass Compressore. It draws a lot of current, which is probably the only drawback unless using it's dedicated power supply is of no issue to you. It takes up two slots with a current doubler on my Chameleon Fuel Tank to get it enough juice, so I put a mini power strip under my board to power both separately, so it's understandable why it's not the most popular. However, this is seemingly it's only drawback. They're fairly inexpensive used ($140-$160) and the tone when it's compressing is glorious. Knowing how a compressor works takes some understanding of how a signal works. Every has a compressor they swear by, including me. After trying a few out, I saw a used MB up for $150 and I went to Bongo's Ovnilab comp link, read his review, and have not looked back since. It's the longest standing pedal on my board and it'll probably be one of the last to leave.