Up to Four Modular Channels of Tube Preamp Bliss - and More!
The Randall MTS RM4 modular tube preamp gives you more than just 4-channel flexibility - you can swap out any or all channels whenever you want! Choose from over a dozen MTS Series preamp modules (sold separately), load up the MTS RM4 chassis, and put your personal stamp on your tone! It's like having a custom-made, multi-channel rackmounted preamp that can constantly be reconfigured. You also get parallel and series effects loops, MIDI functionality, front/rear panel inputs, and two 12AX7 tubes to buffer the effects loop on the MTS RM4.
Related Videos: RM4
- Four channels, more possibilities
- Effects loops and MIDI functionality
- MTS modules
Four channels, more possibilities
The MTS RM4 represents a unique approach to "voicing" a preamp. Like an analog version of a digital modeling amp, the MTS RM4 lets you choose channels ranging from pristine clean to absolutely raging, and everything in between. This preamp accomodates up to four separate modules (sold separately - call your Sweetwater Sales Engineer for details), each with a pair of 12AX7 tubes, Gain, Bass, Mid, Treble and Master controls, and a bright switch.
Effects loops and MIDI functionality
Randall built the MTS RM4 with the stage in mind. Parallel and series effects loops are included on the preamp, with two 12AX7 tubes to buffer the loop. Patching in effects and other signal processors is a snap with this versatile setup! The MTS RM4 is also MIDI-capable and can use an optional 4-button MIDI-selectable footswitch to access each of the preamp channels independently. The ability to go from vintage clean to modern grind is now at your feet!
MTS modules
With fourteen MTS preamp modules to choose from and more in the works, having a new amp is as simple as plugging in a new module. Start with as few as one, or install up to four, and you'll have all your favorite tones right at your fingertips. All modules can be used for the RM4 preamp and utilize the same panel layout. Here's an overview:
Ultra: Extreme hi-gain, with tight low end and liquid sustain. This one exemplifies the Randall tone, and is perfect for any classic to modern metal tone.
Treadplate: Based on the preamp circuit of a Mesa/Boogie Dual Rectifier. Cutting tone with strong mid-range. It has defined the modern day rock and Nu-Metal tone.
UltraXL: A modern version of Randall's high-gain tone, the Ultra XL has massive amounts of liquid gain combined with huge bottom end and cutting upper mid-range.
JTM: Based on the preamp circuit of a classic Marshall JTM45. Classic mid-gain amp with good bottom end.
SL +: Based on the preamp circuit of a hot rodded Marshall Super Lead. Randall give the classic Super Lead circuit a bit more gain and punch.
Plexi: Based on the preamp circuit of a classic Marshall Plexi. You can take it anywhere from Page, to Angus, to Gibbons.
Top Boost: Based on the preamp circuit of a Vox AC30TB with a little more kick in the front end. Chiming high end that will handle anything from classic Petty, to Brian May to modern Lenny Kravitz.
Tweed: Based on the preamp circuit of a '59 Fender Bassman. Great for all blues tones with a huge bottom end and nice bite in the gain circuit.
Blackface: Based on the preamp circuit of a Fender Blackface Twin. Legendary clean tone with cutting mid-range and sparking highs.
DLX: Based on the preamp circuit of a Fender Blackface Deluxe. Tone that bleeds country music. Great mid-range and top end spank, with more bite than the Blackface.
Clean: Very warm and round. A perfect clean tone for the jazz and blues guitarist, or any guitarist looking for a smooth, robust, clean sound.
Modern: Modern Hi-gain distortion. This one takes you from modern rock to nu-metal rock tones.
Brown: Classic high-gain brown sound. A basic hot-rodded Plexi with great mid-range sustain. Great for early EVH and 70's rock as well as dirty tone from early 90's grunge.
XTC: Based on the preamp circuit of a Bogner Ecstasy red channel. An all around great hi-gain tone with tight low end and cutting mid-range. It will cover any rock to metal tone.
Randall MTS RM4 Modular Tube Preamp Features:- Four independent channels (with your choice of vintage to modern voiced preamps)
- Parallel effects loops with front panel mix control
- Series effects loop
- MIDI In/Through
- Pre and post loop outputs
- Two 12AX7's buffer the effects loop
- Eleven 12AX7 tubes (when used with four modules)
- Front and rear panel inputs
