Gunslinger,

Your solution is way too simple and I'm ashamed that I didn't think of it. The butt thumper and it's amp don't have gain control so I was hoping to get a volume control for it out of this setup. I can work around that, tho. Thank you.

Also, thank you for the link to the ICBM user guide. Can you also provide a link to the user guide for the 950?