Pedals that stack with the Supro Delta King

J. Rockett The Dude

J. Rockett The Dude's own saturated character is the real reason this is worth trying

JAM Pedals Octaurus

Both lean toward spring and shimmer respectively — close enough in character that they complement instead of clashing

JAM Pedals Red Muck

JAM Pedals Red Muck's own scooped character is the real reason this is worth trying

EarthQuaker Devices Hummingbird V2

Keep EarthQuaker Devices Hummingbird V2 after Supro Delta King in the signal chain, clear of Supro Delta King's own gain stage

Walrus Audio Bellwether Stereo Analog Delay

Walrus Audio Bellwether Stereo Analog Delay's analog warmth voice goes in Supro Delta King's effects loop — it's not there to compete with Supro Delta King's own spring character — goes in the amp's FX loop (or last, into a clean amp)

Benson Amps Delay

Run Benson Amps Delay in Supro Delta King's effects loop, clear of Supro Delta King's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Universal Audio 1176 Compressor

Universal Audio 1176 Compressor leans toward compressed, and that's a real, usable character to pair with