Pedals that stack with the Randall RG100ES

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)

What Electro-Harmonix Green Russian Big Muff brings here leans toward full — that's worth building a pairing around

Goes in front of the amp

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

Run Spaceman Explorer 6-Stage Phaser after Randall RG100ES in the signal chain, clear of Randall RG100ES's own gain stage

Goes in front of the amp

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

Greer Soma leans warm right where the bright tone needs it

Goes in front of the amp

pushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (high gain → mid-forward)

Ibanez TS10 Tube Screamer Classic leans toward harmonically rich, and that's a real, usable character to pair with

Goes in front of the amp

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

Crazy Tube Circuits Golden Ratio leans toward tight, and that's a real, usable character to pair with

Goes in front of the amp

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

Run Suhr Discovery in Randall RG100ES's effects loop, clear of Randall RG100ES's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

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 MXR Analog Delay in Randall RG100ES's effects loop, clear of Randall RG100ES's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop