Future Sound Systems TG4 Gristleizer Modulator

Sorry, this listing has sold out.

Sold Out!

The Gristleizer Modulator presents another key component of the Gristleizer in a Eurorack module - its JFET-controlled voltage-controlled amplifier. Whilst originally controlled by the Gristleizer's oscillator to achieve tremolo (or amplitude modulation) effects, the TG4 can be controlled by any control source available in a Eurorack system and, therefore, be used as a conventional VCA with some added features.

The Bias control sets the initial control point of the amplitude modulation, whilst a control voltage attenu-verter for CV2 allows for full control over how the amplitude is modulated. On top of this, the TG4 features a Dirt control, which allows the user to alter the behaviour of the JFET stage. At zero Dirt, the Modulator offers a super-clean VCA, whilst at maximum Dirt, waveforms become drastically mutated, at times beyond recognition. With the Dirt setting at 12 o'clock, the Modulator behaves exactly like the original VCA circuit of the Guitar Effects Pedal design. Also note that the JFET tends to exhibit second-harmonic distortion, similar to that of vacuum-tube amplifiers. Therefore, the TG4 presents not just a VCA, but also a module for adding distortion and character to audio signals.


Found Sound Australia Pty Ltd.
155 Elgin Street (Via Markov Place)
Carlton, VIC 3053

Product Specs

Brand New (New)
Future Sound Systems
TG4 Gristleizer Modulator

About The Seller

Found Sound
Joined Aug 2015
Carlton, Australia


Accepted Payment Methods

  • PayPal

Shipping Policy

Available for local pickup from Carlton, VIC, AU

Ships from Carlton, VIC, AU to:

United States
European Union
New Zealand
Everywhere Else

Found Sound is based in Melbourne, Australia and ship with tracking worldwide. International shipments may incur additional charges.
Please contact to bundle shipping.

If you feel our shipping price is inaccurate, please contact us and we will check it out!

Tax Policies

This seller doesn't charge tax on their sales.

Return Policy

Return Window

This product can be returned within 14 days of receipt.

General Terms

Items must be returned in original, as-shipped condition with all original packaging and no signs of use. Buyer assumes responsibility for all return shipping costs unless the item was not received as described.


Buyer receives a full refund in their original payment method less any shipping costs and a 10% restocking fee.

Special Conditions

If you are unhappy with your purchase you can return the item for a full refund excluding shipping cost & restocking fee.

Found Sound

Carlton, Australia
Joined: Aug 2015

Seller Achievements