Yeah, I was thinking that it would be better to buy a 2.5mm minijack socket rather than desolder it from the iLamp board, but it's all a bit of a moot point anyway because I sold off the iLamp years ago! The PSU had died and then I foolishly managed to break the rest of it while attempting an ATX modification, but the person who got a replacement screen for his one was happy.

I have to clean out the shed sometime soon; when I do I'll pull out my speakers and measure their impedance for you.