Thanks! That will certainly help me get started.
One more question. I want to be able to toggle between presets. It looks like the DSP.2 can only store two at a time, which seems like an odd limitation, but this is really all I need a "remote" to do. Is it possible to buy some existing cable that will plug into this unit, which I can cut the end off of and just add a switch between the proper wires? If so, is it a momentary or toggle switch and do I need anything else connected for the device to enable this functionality?
Thankfully it uses an 8-pin mini-DIN. These were commonly used in the early to mid 90s for serial devices, like PC MIDI interfaces, which go from this to a DE9 connector. They were also used for serial interfaces on Apple and other computers back then too. I'm not about to lop off the end of the PC MIDI cable from a collectible old Roland synth, but I may be able to find something that I can use for this.
What do you guys think about this idea? The URC.3 looks interesting, but my head unit has a volume knob and steering wheel controls. I'm not currently enough of a purist to need to control the main volume from the DSP (as is often recommended), I'd rather just have the one main knob to deal with. I also have a remote level knob for my Kicker subwoofer amp, so I'll be good with that.