Pedals that stack with the Fender Dual Showman (Silverface)

Tone City Model B Distortion TC-T31

Run Tone City Model B Distortion TC-T31 into that transparent platform and it finally gets some high gain

Catalinbread Formula 5F6

Into a transparent tone, Catalinbread Formula 5F6 brings the mid-forward it's missing

Zvex 59 Sound

Zvex 59 Sound's own edge of breakup character is the real reason this is worth trying

BBE Tremor V2

Run BBE Tremor V2 after Fender Dual Showman (Silverface) in the signal chain, clear of Fender Dual Showman (Silverface)'s own gain stage

Origin Effects SlideRIG Compact Deluxe

Origin Effects SlideRIG Compact Deluxe leans toward compressed, and that's a real, usable character to pair with

Dunlop MXR M299 Carbon Copy Mini

Into Fender Dual Showman (Silverface), Dunlop MXR M299 Carbon Copy Mini is right at home: it's built around a clean amp's front end — goes in the amp's FX loop (or last, into a clean amp)

Alexander Pedals Now We Are Ghosts Reverb

Alexander Pedals Now We Are Ghosts Reverb's analog warmth voice goes in Fender Dual Showman (Silverface)'s effects loop — it's not there to compete with Fender Dual Showman (Silverface)'s own tight character — goes in the amp's FX loop (or last, into a clean amp)