MASH refers to the pedal's pressure-sensitive footswitch, which allows players to adjust the intensity of the effect by how hard they push - it controls different parameters dependent on the reverb type, and is a little like having an expression pedal built in.
The other headline news is the addition (finally!) of a shimmer reverb, utilising the polyphonic pitch-shifting of TC's Sub 'N' Up Octaver - it can self-oscillate with judicious use of the MASH footswitch, too.
Elsewhere, the pedal boasts the same features as the original (minus a couple of types), but adds two additional TonePrint slots, taking the total up to three, as well as a MASH LED.
As long as the MASH technology delivers in practice, this could be the 'verb to beat, and we expect to see it in our round-up of the best reverb pedals before long. We're fascinated to see the future applications of MASH, too…
The Hall Of Fame 2 is available now for $149 - the same price as the original. Head over to TC Electronic for more info.