Pedals that stack with the GFI System Jonassus Drive

Browne Amplification Carbon

Browne Amplification Carbon's bright balances out the warm tone

Ashdown Geezer Butler Signature

Where this leans warm, Ashdown Geezer Butler Signature answers back bright

Walrus Audio Lillian

Put Walrus Audio Lillian after GFI System Jonassus Drive in the signal chain, clear of GFI System Jonassus Drive's own gain stage

JHS 3 Series Compressor

What JHS 3 Series Compressor brings here leans toward compressed — that's worth building a pairing around

Boss DD-200 Digital Delay

Boss DD-200 Digital Delay's analog warmth voice goes after GFI System Jonassus Drive in the signal chain — it's not there to compete with GFI System Jonassus Drive's own warm character — goes in the amp's FX loop (or last, into a clean amp)

Alexander Pedals History Lesson Vol. 2

Put Alexander Pedals History Lesson Vol. 2 after GFI System Jonassus Drive in the signal chain, clear of GFI System Jonassus Drive's own gain stage — goes in the amp's FX loop (or last, into a clean amp)