Pedals that stack with the Lehle Sunday Driver SW II

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (transparent → mid-forward)

The transparent tone has headroom to spare — Electro-Harmonix 1973 Violet Ram's Head Big Muff Pi V2 leans it toward mid-forward to fill it in

Comes earlier in the signal chain

clean platform takes the driveA clean, high-headroom stage takes on dirt it can't generate by itself. (transparent → fuzzy)

Run Wren and Cuff Box of War OG into that transparent platform and it finally leans toward fuzzy

Comes earlier in the signal chain

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Keep Dunlop JD-4S Rotovibe after Lehle Sunday Driver SW II in the signal chain, clear of Lehle Sunday Driver SW II's own gain stage

Comes earlier in the signal chain

shapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain.

Vox Valvenergy Silk Drive leans toward smooth, and that's a real, usable character to pair with

Comes earlier in the signal chain

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Electro-Harmonix Memory Boy Analog Delay's analog warmth voice goes after Lehle Sunday Driver SW II in the signal chain — it's not there to compete with Lehle Sunday Driver SW II's own transparent character — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.

Keep Lehle Sunday Driver SW II's transparent voice out front: JHS 3 Series Oil Can Delay goes after Lehle Sunday Driver SW II in the signal chain so its modulated voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain