"My" Proton is no longer mine - it's sold and shipped. Just didn't do it for me, as discussed. For now, I'm back to my M13 Tron Up digital model (which I like yet more than before I got the Proton as I was able to use the Proton as a baseline from which to benchmark and adjust the Tron Up).
If I ever try another MuTron-type standalone pedal, it will have to be the TruTron3x.
Disclaimers: I'm happy to share whatever relevant gear knowledge or experience I have. Genuflection/payment/proof of worthiness neither sought nor accepted. I don't design, build, market, sell or endorse for pay any new music product or service. I occasionally sell personal used gear. I am an unpaid endorser of SoundScaper Productions and Godfrey Daniels Guitarworks.