I use, on a very scarce way, a DBX163x on my rack, along with a Yamaha PB1 preamp, a Digitech RDS1900 digital delay set for Chorus, and a QSC GX5 power amp. The 163x is over-easy to use, just a slider to change the amount of compression, and I use it around 20%, sometimes even less, only to tame certain peaks when slapping, sometimes about 50% if I'm using my fretless, and a little chorus from the RDS... the rest is all on the hands...