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Randall MTS Series Modules

Randall MTS Module

Randall MTS Modules

Currently there are 14 different modules available. All modules can be used for the RM4 preamp, RM combos and RM heads. All modules utilize the same panel layout, which includes Gain, Bass, Mid, Treble and Master controls. Also the Egnater modules will work in the Randall amps but with reduced functionality as the Egnater modules have multiple channels per module.

A bright switch is included directly under each Bass control. Each preamp module houses two 12AX7 tubes which can be easily changed or replaced. Use the thumbscrewa to remove or secure each module to the front panel of every MTS amplifier.

ModuleDescription
UltraExtreme hi-gain, with tight low end and liquid sustain
Ultra LeadHi-gain lead tone with rich harmonic sustain
ModernModern hi-gain distortion. For modern rock to nu-metal
RectoBased on the preamp circuit of Mesa Boogies Dual Rectifier
JTMBased on the preamp circuit of a classic Marshall JTM45
SL+Based on the preamp circuit of a hot rodded Marshall Super Lead
PlexiBased on the preamp circuit of a classic Marshall Plexi
Top BoostBased on the preamp circuit of a Vox AC30TB with a little more kick in the front end
TweedBased on the preamp circuit of a '59 Fender Bassman
BlackfaceBased on the preamp circuit of a Fender Blackface Twin
DLXBased on the preamp circuit of a Fender Blackface Deluxe
CleanVery warm and round
BrownClassic hi-gain brown sound. Basic hot-rodded Plexi
XTCBased on the preamp circuit of a Bogner Ecstasy red channel

There are also mods for each preamp that are fairly simple if you know how to work a soldering iron. These mainly involve the hi-gain modules and help tighten up the bottom end. These mods are especially useful if you tune down. Other mods help clean up the clean sounds and another takes some gain away from the Top Boost module to get it closer to that Beatles Vox sound. There will be a article specific to these mods.


Randall XTC Bogner Ecstasy Based Tube Preamp Module
Randall XTC Bogner Ecstasy Module
Randall Top Boost Module
Randall Top Boost Module
Randall Clean Module
Randall Clean Module
Randall SL+ Module
Randall SL+ Module
Randall Plexi Module
Randall Plexi Module
Randall JTM Module
Randall JTM Module
Randall Brown Module
Randall Brown Module
Randall Tweed Module
Randall Tweed Module
Randall Blackface Module
Randall Blackface Module
Randall DLX Module
Randall DLX Module
Randall Ultra Module
Randall Ultra Module

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