MORLEY Dual Bass Wah have this pot inside to cut off the delay. You just have to turn it anticlockwise until the arrow points cero. I've seen a post about this, I tried myself and works fine, I just wanted to add the pictures in case anyone need it. : r/basspedals
Morley PBA-2 Dual Bass Wah pédale d'effet | Bax Music
Morley Dual Bass Wah - Tonebox.com
Morley Pba 2 Dual Bass Wah - Used - Guitars - Effects - Wah Pedals | Music Works
Morley PBA-2 Dual Bass Wah pédale d'effet | Bax Music