The Runoffgroove Supreaux Deux is an updated version of the original Supreaux circuit, which was a JFET adaptation of the Supro 16T amplifier. The Supreaux Deux was designed to be even more accurate to the sound of the Supro amp, and it has become popular among DIY enthusiasts.

The Aion FX version of the Supreaux Deux is a direct adaptation of the original circuit, but with a couple of modifications. First, a charge pump has been added to the circuit to allow it to run on 18V power, which is necessary for it to sound right. This is achieved by converting the standard 9V input into 18V using the charge pump.

Additionally, another position has been added to the Bottom switch, which allows for three settings instead of two. This gives users more flexibility in shaping the tone of the circuit.

One challenge with the original Supreaux circuit was that the J201 JFETs used in the circuit were difficult to find in a through-hole format. To address this, Aion FX offers J201s in surface mount device (SMD) format that have been pre-soldered to adapters. This allows DIY hobbyists who may be intimidated by SMD parts to use the J201s as through-hole parts instead.

Overall, the Runoffgroove Supreaux Deux is an updated and improved version of the original Supreaux circuit, offering a more accurate representation of the Supro 16T amplifier’s sound. With the modifications made by Aion FX, it is easier for DIY enthusiasts to build and use in their projects.

Summary created by AI from the original source.