Im trying to use both at the same time but its not working for me. i plugged my bass into the me-50s input jack, ran a cord from the output jack of the me-50 to the input of the rc-3, and ran a cord from the output jack of the rc-3 to my GK backline 600 which is connected to a half stack GK BLX. I can use either of them by themself but not together. i have tried multiple cords and none will work. PLEASE HELP!
Boss RC-3 and Boss ME-50B 
