So- I have recently learned about several analog pedals that have "full" MIDI control- by "full" I mean that every single parameter you can adjust with the physical controls is capable of being adjusted via MIDI & saved to a preset that can be switched via an external MIDI controller as part of a preset (I own a HX Effects). Examples: Strymon Sunset, Chase Bliss Audio Brothers, Elektron Analog Drive (which I just ordered cheap!), and the Neunaber Neuron pre-amp pedal. I own a Randall RM100 head; which allows simple channel switching via MIDI, nothing else. Have been looking hard at the Mesa TC-50, which offers more MIDI controls switching the boost,loop & reverb on/off, but not the various channel toggles (Tight/Normal), or any of the rotary analog pot values (i.e. gain, master, bass/mid/treble). I am not aware of any other all-tube (pre-amp and power-amp) head/combo that allows the "full" MIDI control of all parameters like the analog pedals I listed above. Does such an animal exist? Are there some specific limitation(s) to tube pre-amp/power amp controls that prevents the MIDI technologies used in the pedals above from being implemented on a head/combo?