I've had my SC-155 for about two years now. Bought it for approximately us$150.00 from another musician. At any rate, I've been very happy with it because it is very user-friendly. There are 8 sliders that may be used to adjust panning or volume(level). I use the SC-155 in conjunction with my kawai k1 keyboard, Yamaha wf192xg soundcard and Cakewalk ProAudio8. It has reverb and chorus and very handsome looking whenever it sits at the top of my rig. I'm planning to add another synth but my only fear is that the SC-155 might hog all the other available channels since i just daisy chain everything from my soundcard midi/joystic port (using a y-midi cable.)Anyway it's a great module and i wouldn't think of parting with it.