Pedals that stack with the NuX Vibe Univibe

Walrus Audio EB-10

What NuX Vibe Univibe brings here leans toward modulated — that's worth building a pairing around

Xotic RC Booster

Xotic RC Booster's own transparent character is the real reason this is worth trying

Keeley Halo

Put Keeley Halo after NuX Vibe Univibe in the signal chain, clear of NuX Vibe Univibe's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Walrus Audio Fable

Keep NuX Vibe Univibe's modulated voice out front: Walrus Audio Fable goes after NuX Vibe Univibe in the signal chain so its full voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)