Well, I might actually be interested in some of that hardware... I'd really like to get an oscilloscope sometime so I could check out what's coming out of my guitar amps (I've got some nicely old ones, and they're all old tech). It's a great way to figure out just exactly where the signal starts to break up...

150W is pretty loud, but I bet it would have a hard time delivering the vocals in competition with a 50W tube guitar amp. Actually, I've got a far descendent of that; it's a Crown 802 XLS, develops 500W/side RMS at 8 ohms. I have to bridge it to run it at two ohms, at which point it's Great amp, sounds great, but it weighs a ton (well, close to seventy pounds). I use it to drive the three JBL JRX112Ms that I have. I used to use two of them for FOH and one as a monitor for whoever was singing, but now that I've picked up those two powered enclosures I can go to running three monitors and two monitor mixes. All I need now is a sub running between 800-1000W, and the fundamentals of my PA are complete... mwahahahaaaaaa :)