I know I've already talked about it, but I gotta post again about how great the Rolls PM351 is. I take that thing EVERYWHERE now. I've done some studio sessions where I didn't get to have my own mix, so I just brought out the Rolls and instantly could hear myself clearly along with being able to balance it with the shared mix. I call it the "More Me" box. One of the guys I play with (sax player) ordered his own and it loving it too. And it works so great with the 1964 Ears.
I also use it as a headphone practice amp at home, it's replaced my old Cafe Walter. Sounds just as good, I can use it for way more applications, and it costs HALF the price!