Based on Marshall® 1959RR (aka Randy Rhoads amp)
n fact, famous white Marshall® 1959RR aka Randy Rhoads amp is 1959 Marshall® modified by so called „one wire mod“. Mod is based off the same mod Randy had done at the Marshall factory. While common Marshall 1959 uses two channels (Normal and bright) in parallel, this amp has rewired these channels to CASCADE configuration, for more punch and gain.
Both Gain knobs (Volume I and Volume II) are active for tone shapping and result of CASCADE configuration is unique, powerfull and raw Marshall tone. In addition module also offers common BLEND mode, which uses gainstages in parallel (just like unmodified 1959SL , with both channels connected by short cable in fron of amp) and allows to blend both channels together.
This way you have two amps in one module, gainier 1959RR and more common 1959 Super Lead. Rhoadie module also offeers switchable sensitivity switch (HI/LO) to compensate lack of LO/HI inputs on MTS amp. Last feature is toneshapping switch which offers two Marshallish tone curves, flat RIOT mode (called after Randys first band) and thick RR mode which offers the same tone shape as Marshall 1959RR.
2 Parallel or stacked channels
Gain knob per channel, Bright switch works on Volume I
LO/HI sensitivity switch
RIOT/RR voicing switch
BLEND (plexi) and CASCADE (RR) mode switch