• GFI System Jonassus
  • GFI System Jonassus

GFI System Jonassus

SGD $340.00

Jonassus drive 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 :
  • Diode / Asymmetric  -  more compression and bites.
  • Diode / Symmetric  -  less compression, smooth, balanced.
  • LED / Symmetric  -  wide opened, warm.
A multicolor LED identifies which clipping option is selected.

Left footswitch :  bypasses/engages the pedal
Right footswitch :  selects which Volume/Gain/Clipping (V.G.C) control set is activated, the left-side or the right-side.

The left-side and right-side V.G.C 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.


  • Very very very nice pedal, but almost even better seller ;-) Just took ten days from ordering to receive in France without any trouble of any kind.
    - Emmanuel M.
  • Top international seller! Best shipping service and best boutique gear!!!
    - David G.
  • Excellent communication and shipper. Love the Specular Reverb. Would buy from again!
    - Anda V.
  • Heavenly reverb pedal. Awesome seller. Well packaged. Super fast international shipping. Many thanks!
    - Rune S.
  • Pedal received and works perfectly. Well communication in this whole transaction and A personal hand written note from Jerome is really thoughtful. Thanks so much Jerome. Look forward to do biz with you for sure in near future. Cheers to this A ++ seller.
    - Lone Chu