Pedals that stack with the Blackstar ID:Core Stereo 40 V4

Sola Sound Tone Bender MkII

Sola Sound Tone Bender MkII takes that high gain character and pushes it toward mid-forward

Colorsound Power Boost

Colorsound Power Boost leans toward bright, and that's a real, usable character to pair with

Xotic EP Booster

Stack Xotic EP Booster on top and a high gain tone tightens toward clean boost

Electro-Harmonix Deluxe Electric Mistress

Keep Blackstar ID:Core Stereo 40 V4's pristine voice out front: Electro-Harmonix Deluxe Electric Mistress goes after Blackstar ID:Core Stereo 40 V4 in the signal chain so its modulated voice doesn't muddy it

Hungry Robot Moby Dick V2

Put Hungry Robot Moby Dick V2 in Blackstar ID:Core Stereo 40 V4's effects loop, clear of Blackstar ID:Core Stereo 40 V4's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Walrus Audio Fathom

Run Walrus Audio Fathom in Blackstar ID:Core Stereo 40 V4's effects loop, clear of Blackstar ID:Core Stereo 40 V4's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Warm Audio Pedal 76 Compressor

What Warm Audio Pedal 76 Compressor brings here leans toward tight — that's worth building a pairing around