RTG Random Tone Generator

A faithful reissue of a rare EHX synthesizer first introduced in 1980. The palm-sized synth produces wild, randomly changing tones over a four-plus octave range. Creates sensational soundscapes, especially when used with other effects!

Featured Videos
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From the Blog
Posted 7/16/2015

Marty Clemenkowff conducts this beautiful sound experiment with this EHX RTG Random Tone Generator improvisation.

From the Blog
Posted 4/18/2013

8 Step Program Analog Expression/CV Sequencer, Epitome Multi-Effect Pedal and RTG Random Tone Generator demos by Felipe Souza at Musik Messe in Frankfurt, Germany

Felipe demos the 8 Step Program controlling the HOG2 Harmonic Octave Generator.
click here to view the demo

Micro POG, Stereo Electric Mistress and Holy Grail Plus in one amazing pedal!
click here to view the demo

Felipe shows the RTG Random Tone Generator, a reissue of a rare EHX synth introduced in 1980.
click here to view the demo

From the Blog
Posted 4/1/2013

Created by the brilliant designer, Bob Bednarz (a descendant of Copernicus), the RTG Random Tone Generator takes you on a journey of sonic serendipity. Used in solo mode or with other EHX effects, the RTG’s soundscapes capture the beauty of the unexpected.

This pedal was conceived of and designed by EHX from globally sourced components. Every EHX pedal goes through a stringent testing process by musicians and technicians in NYC before packing.

From the Blog
Posted 2/22/2013

Joel Gilardini explores the unexpected with his new RTG Random Tone Generator and many other EHX guests.

This pedal was conceived of and designed by EHX from globally sourced components. Every EHX pedal goes through a stringent testing process by musicians and technicians in NYC before packing.

From the Blog
Posted 1/23/2013

EHX introduces a new, super looping recorder with state-of-the-art features: the 45000 Multi-Track Looping Recorder. We are also unveiling the RTG Random Tone Generator. A faithful reissue of a product which was originally released in 1980.


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Quick Specs
Rate knob controls the speed at which the tones are generated
Glide switch adds portamento or a glide between pitches
I/O is super simple with just a 1/4" output jack
A footswitch turns the RTG on or off and an indicator LED alerts the user to its status
Power is through a standard 9Volt power supply or 9Volt battery (included)
Dimensions in inches: 2.75 (w) x 4.5 (l) x 2.1 (h)
Dimensions in mm: 70 (w) x 115 (l) x 54 (h)
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