Pedals that stack with the Park P75H

Dawner Prince Boonar

Keep the Boonar in the P75H's loop — modern delay character that the amp's own British midrange doesn't offer on its own. — goes in the amp's FX loop (or last, into a clean amp)

Meris LVX Delay

Run the LVX in the Park's loop — its trails stay clear of the amp's own crunch instead of getting distorted along with it. — goes in the amp's FX loop (or last, into a clean amp)