Hi there, Randall! Thanks for the nice words. I'm currently without a band, so that's why the rack is on the floor in my living room... lol. Hope to get back in business with the ADA-rack soon
I got the 1.38 in 2004, and it sounded amazing. I was surprised how clean and quiet it was, very little noise coming from the unit. Later I did the battery,noise and stock gain mod. After that it changed for the worse regarding the noise. It hums too much and therefore I haven't used it much since. Actually I think about undoing the Stock Gain Mod and updating it with an MRDT, maybe it will end up in Belgium at MarshallJMP's eventually. The 2.01 I got later on, and this is what I use now. Not because it is better, but because of the troubles with the first one.
If you have a chance of getting an unmodded 1.38 for cheap, go for it. You can't have too many MP-1's