Whats the trouble with it? I have one that I just run the stereo outputs into my mixer-I wouldn't bother with the Bass sounds-turn them off in the utility mode. If you don't have the manual, go to the Roland/Boss website and register with them, after they send a verification email and you respond, you can download the DR-670 manual as well as manuals for Roland/Boss keyboards, pedals and tons of other things.....