Pedals that stack with the Ampeg GV-12UK

Ashdown Geezer Butler Signature

The Geezer Butler's doom-heavy bass distortion pushes the GV-12UK's natural jazz-blues voice into real heaviness.

Marshall Guv'nor

The Guv'nor's vocal, compressed crunch pushes the GV-12UK's natural jazz-blues voice into real, balanced gain.

Boss ODB-3

The ODB-3's bass-voiced overdrive gives the GV-12UK's natural jazz-blues tone real rock grit.

Boss BF-2 Flanger

Run the BF-2's lush, natural flange after the GV-12UK's own tremolo-inflected voice settles, so the two modulations layer instead of clashing.

Dunlop MXR M299 Carbon Copy Mini

Run the Carbon Copy Mini's dark, ambient slapback in the GV-12UK's loop, beyond the amp's own natural tremolo voice. — goes in the amp's FX loop (or last, into a clean amp)

Boss BC-1X

Run the BC-1X's live-ready bass compression ahead of the GV-12UK for even dynamics before the amp's own natural voice reacts.

Strymon BigSky

Run BigSky's shimmering ambient reverb in the GV-12UK's loop, past the amp's own natural tremolo and jazz-blues voice. — goes in the amp's FX loop (or last, into a clean amp)