Pedals that stack with the Blackstar IDX:50

Beetronics Buzzter Boost Preamp

Feed a high gain signal into Beetronics Buzzter Boost Preamp and it comes out closer to clean boost

Friedman BE-OD

Into Blackstar IDX:50, Friedman BE-OD is right at home: it's built around a clean amp's front end

Colorsound Overdriver

Colorsound Overdriver's bright balances out the warm tone

Walrus Audio Lillian Multi-Stage Analog Phaser

Put Walrus Audio Lillian Multi-Stage Analog Phaser after Blackstar IDX:50 in the signal chain, clear of Blackstar IDX:50's own gain stage

MXR Analog Delay

Keep MXR Analog Delay in Blackstar IDX:50's effects loop, clear of Blackstar IDX:50's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Keeley Bassist

Keeley Bassist's own compressed character is the real reason this is worth trying

Boss RE-202 Space Echo

Put Boss RE-202 Space Echo in Blackstar IDX:50's effects loop, clear of Blackstar IDX:50's own gain stage — goes in the amp's FX loop (or last, into a clean amp)