Seems that the amp that I bought (the Blaupunkt PA2100) is rather unique. The connectors that it has on it aren’t the standard connectors, so it’s probably one from a factory-installed stereo in a prestige car of some sort. Click on the images below to see the amp/connectors on it - if you can work out what they are, please tell me, and if you know where to get them, give me the info!
Oh, and in other news - the amp is a 2x100W RMS digital amp, class “T” as they describe it - it’s got the sound quality of a class AB amp, and the efficiency of a class D amp. I’ve seen claims of over 350WRMS out of this amp, which should be well and truly enough for the application that i’m putting it into.