Do I need an outboard mixer for Guitar Tracks?

[Ricklh]

I'm trying to get set up with a good basic system for making simple home demo's. I presently have Guitar Tracks 2 that I'm thinking about upgrading to G.T. Pro. I have an ART Tube MP mic pre-amp, but I was wondering if I would get better-sounding results if I get a Behringer mixer (the $59.99 602, 6-channel model is what I'm considering)? Or, is the ART preamp combined with the Guitar Tracks sufficient? (I'm recording vocal, acoustic guitar, keyboard)

 

[AlChuck]

No, you certainly don't need a mixer, what you have should suffice for your needs if you are recording one thing at a time.