Metasonix R-53 - Waveshaper / Ringmod


Out of production. Sales only while stock lasts.

The R-53 is directly derived from Metasonix´ legendary TM-1 device.  It is a tube wave shaper and a tube ring modulator module



It uses a 12AF6/BD6 remote-cutoff pentode and a 12AV7 dual triode. Waveshaping is provided by a vacuum-tube "pulser" circuit that spits irregular pulses onto the input waveform. They synchronize erratically with the input pitch (if a waveform with sharp transitions is used). Combined with true vacuum-tube circuit distortion, this can provide a vast range of complex, aggressive distortion effects, utterly unique in the world. A basic ring-modulation function is also available in the unit--applying a carrier pitch from an external oscillator to the screen grid of the pentode, this allows making inharmonic sum-and-difference pitch sound effects, with a unique vacuum tube pentode sound.

The module has controls for level of input and output signals, the pulser´s frequency and for input level of the ringmodulator´s carrier signal.

Tubes protrude max. 38mm from the front panel. This will fit the lid of each Doepfer case.

The R-53 is fully protected against reverse supply voltage, overvoltage, undervoltage, or incorrect hookup to external equipment.


Audio input and output.
Pulser CV-input. Carrier input for the ring modulator.


3U Eurorack module, 22HP wide, max 25mm deep
Current draw 150mA

0.197 kg
Article Number

This item is discontinued or sold out and no longer available, please feel free to look for comparable new stuff in the following categories.