#1
I'm not really sure what a boost pedal does. Is it like a weaker OD pedal? How well would a SS amp like a boost pedal?
#2
They add volume, which pushes the tubes harder in a tube amp. Thats why they are sometimes called a clean boost, they dont actually add gain to the signal, they push the amp to make more gain. I dont think a SS amp would take a boost too well, it may push it into clipping, which isnt very good for a SS amp.