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RGX 100

RGX 100

Solid State Preamplifier

Regular price £129.00 GBP
Regular price £199.00 GBP Sale price £129.00 GBP
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Summer Sale! - All Guitar pedals are 35% off as we clear out stock and make room for new and exciting products.

Based on the Randall* RG100ES.

High gain, tight and aggressive. Those are the words to describe the tone of the RG. The RGX100 provides the legendary sound of the high gain RG channel, in a compact pedal form. But that's not all, because we have improved upon the original:

  • Tightness control - lets you tighten up the sound even more by cutting some of the low frequencies from the early gain stages. 
  • Sustain Volume - The original amplifier had an annoying quirk, where the volume would drop significantly when engaging the sustain mode. We've fixed that. 
  • Crunch Mode - Takes you half way between two channels of the original amp, by switching in and out the bypass capacitors in the first gain stage. This opens up additional tonal options, by playing with the combination of Crunch, Sustain and Gain, to achieve a myriad of different sounds.

* Randall is a registered Trademark of JAM INDUSTRIES USA, LLC.

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Product Details - RGX 100


  • Bass, Mid, Treble - A classic 3-band tonestack, although more responsible than most Fender/Marshall stacks of the same design.
  • Presence - Rolls off the highest frequencies to control fizziness.
  • Gain - The main gain control for the preamp.
  • Volume - Controls the output signal amplitude.
  • Tight - Tightens up the sound by cutting low frequencies from the early gain stages.
  • Crunch - Switches between a lower-gain, mid-heavy tone, and a higher-gain, high-treble tone.
  • Sustain Switch - Engages the Sustain feature, adding a pair of clipping diodes to the signal path for a very aggressive and saturated sound.
  • Active Switch - Engages or bypasses the pedal with a relay (true bypass).

The original

The Randall RG100ES earned its significance in the guitar amplifier landscape for several reasons, making it stand out from its contemporaries during its heyday in the 1980s and beyond.

The inclusion of the "Gain Boost" function set the RG100ES apart. This feature allowed players to push the amplifier into even higher levels of distortion, catering to the needs of heavy metal and hard rock guitarists who sought a relentless and ferocious tone.

Several famous musicians embraced the Randall RG100ES for its distinctive tones and reliability. While it may not have reached the same level of ubiquity as some other amplifiers, notable artists who used or endorsed the RG100ES include Dimebag Darrell (Pantera), George Lynch (Dokken, Lynch Mob), and Michael Angelo Batio (Nitro), who appeared in promotional ads for the line, and featured Randall amps in the background of many of his famouse shred-instructional videos.


  • True Bypass with Relay switching.
  • Soft-touch footswitches.
  • Internal voltage-boost mechanism ensures circuit runs at same voltage as the original amp.
  • Aluminium enclosure with durable powder coat finish.

Technical Specs

  • Power Requirement: 9V DC, 180mA
  • Power connector: 2.1mm center-negative barrel jack
  • Dimensions: 155mm (W) 125mm (D) 61mm (H)
  • Dimensions (with packaging): 185mm (W) 130mm (D) 70mm (H)