GFI System Jonassus

GFI System Jonassus is a dual-channel overdrive pedal offering a sweet, warm, and articulate low-gain overdrive (“Low Channel”) plus a thick and ballsy medium-high gain overdrive (“High Channel”).

Each channel has its own Volume and Gain control, a shared Tone control, and an independent set of clipping mode options.A multicolor LED identifies which clipping option is selected:
Diode / Asymmetric – more compression and bites.
Diode / Symmetric – less compression, smooth, balanced.
LED / Symmetric – wide opened, warm.

The left footswitch  bypasses/engages the pedal and the right footswitch selects which channel is activated. The left-side and right-side controls are not permanently mapped to any channel. The DIP switch (at the back of the pedal) setting gives you three different ways of mapping the V.G.C control to the low-gain and the high-gain channel.

The range of gain available on both channels is fairly wide, this adds an extra dimension for exploring the drive textures, e.g. you can easily get very usable crunch tones by dialing down the gain control in the high channel. Likewise you can coax some heaviness by cranking up the gain control in the low channel. Despite the overlaps of the gain range, the two channels are tonally distinct and unique.

This is an pedal with an exceptionally wide range of overdrive tones, all available on tap!

GFI System Specular Jonassus demo video