Pedals that stack with the Blackstar HT Club 50 MKIII 2-Ch 50-Watt Tube

Friedman BE-OD

Friedman BE-OD pushes a high gain tone toward tight

Colorsound Overdriver

Stack Colorsound Overdriver on top and a high gain tone tightens toward clean boost

Beetronics Buzzter Boost Preamp

Beetronics Buzzter Boost Preamp takes that high gain character and pushes it toward clean boost

Electro-Harmonix Deluxe Electric Mistress

Keep Blackstar HT Club 50 MKIII 2-Ch 50-Watt Tube's high gain voice out front: Electro-Harmonix Deluxe Electric Mistress goes after Blackstar HT Club 50 MKIII 2-Ch 50-Watt Tube in the signal chain so its modulated voice doesn't muddy it

Dunlop MXR M299 Carbon Copy Mini

Dunlop MXR M299 Carbon Copy Mini's own voicing points at a clean amp's front end, and Blackstar HT Club 50 MKIII 2-Ch 50-Watt Tube delivers it — goes in the amp's FX loop (or last, into a clean amp)

Warm Audio Pedal 76 Compressor

Warm Audio Pedal 76 Compressor's own tight character is the real reason this is worth trying

Meris Mercury7 Reverb

Keep Meris Mercury7 Reverb in Blackstar HT Club 50 MKIII 2-Ch 50-Watt Tube's effects loop, clear of Blackstar HT Club 50 MKIII 2-Ch 50-Watt Tube's own gain stage — goes in the amp's FX loop (or last, into a clean amp)