Right now there are 29 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Musical Instruments › Studio Recording Equipment › Effects & Signal Processors. These are inspected returns and open-box items that Amazon sells and ships itself. WarehouseHunter puts each one next to its current new price, so you can see what you save at a glance.

Brands with the most offers here: DBX, Pyle, FLAMMA, HeadRush, Mackie, Pro, ARS, Metra. Every item is a one-off, so the stock moves all day and new deals keep arriving.