Ummm, I run a straight signal... my bass into my Ashdown pre -> power -> cabs. If I want grit, I crank on the valve. That gives a nice furry tone. But, thats all I do when it comes to effects. However, the more I read, the more I'm thinking compression is a good thing. Now, this may be a very stupid question, but how do you KNOW if you need a compressor, if you dont KNOW if you need a compressor??? I'm outta rack space, so a stomp box is desirable. Seems like the Aphex Punch Factory is a front runner when folks are comparing compressors. Also, my pre has an effects loop... would be advantagous to use that, or run it into my RPM1's input?