Hello. At one of our shows I played through another guy's amp which was an Ampeg SVP-Pro preamp and some power-amp. I really liked the sound of the Ampeg pre so I thought if I got one of those I could use it with my GK 1001RB-II as a poweramp. Ok, so I could connect the preamp-out on the Ampeg to the effect-return on the GK. I was just wondering: How would I set the Ampeg's master-volume in relation to the GK's master-volume? Set the Ampeg's master-volume fairly high and control overall volume with the GK or the other way around? I did a quick search on the topic, but couldn't find the answer. Thanks in advance!