Xotic EP Booster alternatives.

Greatape

JMP220478 said:

Chase Tone Secret Preamp - IMHO very special - into valve amps - clean crunch dirty - just works ;  compliments my Axe FX and Neural Plini too  ( based on various EP preamps afaik )

Indeed. I have a backup en route - the first time I've ever done that with a pedal - because I don't want to be without one. Love it through valve and solid state amps both. 

I also have the Mosky, and it's pretty good, although it lacks the EQ versatility and sheer quality of the Secret Preamp, but it does have a lot more output on tap.