Yo BBQ RIBS:}
With the two ins that have mic pres, you can input, as well as input via 1/4 inch cables from a synth, electric piano, etc.
But, you will need something to "hear" your tracks and that means some type of amp.
I still use an integrated amp to run my entire rig. The RCA stereo outs on the 488 can go directly into an integrated amp. From mine, I run two tape decks, [don't do much tape anymore though] and a CD player and I can record from either to any of; I also have plugs for two sets of speakers which can be turned on/off or one pair, like monitors to mix. I also have a phone plug and AUX for whatever. This Yam amp also has a clear through switch which bypasses any coloration from the amp itself -- but the amp sounds good too and has adjustment buttons if needed.
I now use the Yam 2816 and still run the RCA stereo outs into my integrated amp.
With the integrated amp, I don't need one for the speakers; and, if I move into amped speakers, I still won't need an additional amp.
Something to look at.
Green Hornet