First let me apologize to everyone for creating this thread. I've searched the forum and found many discussions with many opinions on the best way to connect bass effects equipment, but being a newbie at this only confused me more. I'm hoping someone can give me a very easy straight forward explanation on how to connect my equipment. Here is what I have... -Ampeg BA-210 Combo Amp -Tech 21 Sansamp RPM -dbx 160a I have 2 bass guitars, a fender jazz bass with passive pickups and a custom made bass I purchased from a friend with EMG active pickups. Both the Ampeg and the Sansamp have a -15db and -20db switch respectively for the active bass. Also, both the Ampeg and Sansamp have Send/Return effects loop connections. The Sansamp also has a 50/50 switch on the effects loops, but I haven't read up on the yet to see what it does? I'm hoping someone can give me some easy to follow directions on how all this should be connected to get the best use and sound out of all the units. What I'm hoping for is something like... Connect the output from this unit to the input of that unit, then the output from that unit to the return on this unit, etc., etc., etc. Once it's all together, plug your bass into this unit and use the -20db (or -15db) on this unit if your playing the active bass, etc. I would also be interested in any suggested settings you can offer for the Sansamp or the dbx 160a. I'm looking for the type of sound that Geddy Lee has now with his jazz bass's. Thanks in advance!