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Product 481125

Randall MTS Series RM20 15W Guitar Amp Head without Modules

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The Randall MTS RM20 is a 15W guitar amp head with a single channel, and JJ EL84 power tubes.This Randall amp head employs both traditional and moder...Click To Read More About This Product

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A single channel with replaceable module versatility.

The Randall MTS RM20 is a 15W guitar amp head with a single channel, and JJ EL84 power tubes.
This Randall amp head employs both traditional and modern technology rolled into one amplifier. The modular channel can be loaded with your choice of available tube preamp modules. Load it up with a preamp tone that fits your needs with the ability to expand your arsenal anytime a new tone is needed. Don't purchase an amplifier because you like only its clean or hi-gain tone. Equip the Randal MTS RM20 amp with your custom set-up. With more than a dozen tube preamps always available from Randall, a new tone is just a module away.

Change and bias your own power tubes.

Enjoy the ease of replacing your power tubes anytime you like with the very user friendly power tube bias section found on each Randall MTS amplifier. If a tube fails, no problem, the amp will kick that tube out of the circuit and a small LED will light by the tube that fails. Replace only the small protection fuse and tube using a small voltage meter and small screwdriver to adjust each individual bias point. If you like experimenting with different tube types, the bias section allows you to pop in and bias a new set of tubes in just a few minutes.

The RM20 features a tube boost function with Gain and Level controls as well as Master Presence and Density. Choose between live mode or silent mode for direct recording using the included "Mic Eliminator" XLR output. Other pro features include a Series Effects loop, tube bias section. Includes boost footswitch.

Choose between two coverings: black (RM20HB) or palomino (RM20HP).

  • Single channel
  • Black cloth front
  • 15 watts
  • EL84 tube
  • Tube boost function w/Gain and Level controls
  • Master volume
  • Master density & presence
  • Series effects loop
  • Rear panel bias test points
  • Includes boost footswitch
  • World voltage AC input selector (100/120/220/240)

Get the amp that can change with you as your tonal needs evolve! Order today.


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(4 of 4 customers found this review helpful)


Randall RM20


from Newport Beach

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I've had this for about three months now. Overall I've been very happy with it. I bought it with the matching 1x12 with a Celestion Greenback - and purchased it mainly for use as a practice amp and for it's lower wattage. The head basically allows you to get a lot of different tones in one amp, which is what appealed to me. So the good: very versatile selection of modules and tones (SL+ is great, Treadplate is good, Clean not so much); good power (15 watts on this amp is very loud); compact size. I do have a couple things I've realized after buying. I've played it through my Mesa 2x12 with Celestion V30s - a big difference and much better sound. The closed back 1x12 just doesn't do the head justice. Some modules can be very bassy. While, this amp does allow you to get a lot of different tones, in this version (the single mts module) you can only get one tone at a time and I'm constantly switching between modules. I've realized I may have been better off getting a standard two channel amp and just working with the tones and being able to at least foot switch between tones. Finally, when you start to add up the cost of modules, the head, and the cabinet - you may be better off getting a different amp (Modules run $200+, Head $699). So for a clean sound and a high gain sound you're paying at least $1400. Most likely you'll end up with three + modules. So you're getting close to 2 grand for three tones that you have to manually change and a 15 watt head. This has some great sounds available, and the mts system is cool. But this version with only one mts slot just makes playing difficult. The solution - Randall makes an MTS head with reduced watts, or you buy the RM 50 with two MTS slots and use a power attenuator.

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