Pedals that stack with the Peavey 112-6 1x12

What Blackstar HT-Boost brings here leans toward harmonically rich — that's worth building a pairing around

Goes in front of the amp

Boss HM-2 Heavy Metal's full voice suits Peavey 112-6 1x12's own full character

Goes in front of the amp

Catalinbread Carbide leans toward silicon, and that's a real, usable character to pair with

Goes in front of the amp

Put Electro-Harmonix Electric Mistress after Peavey 112-6 1x12 in the signal chain, clear of Peavey 112-6 1x12's own gain stage

Goes in front of the amp

Keep Crazy Tube Circuits Mirage Dual Reverb in Peavey 112-6 1x12's effects loop, clear of Peavey 112-6 1x12's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

Keep Crazy Tube Circuits Splash in Peavey 112-6 1x12's effects loop, clear of Peavey 112-6 1x12's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Sits in the amp's effects loop

What Keeley Compressor Plus brings here leans toward compressed — that's worth building a pairing around

Goes in front of the amp