Right now there are 45 deals from Amazon Resale, formerly Amazon Warehouse Deals, in Musical Instruments › Instrument Accessories › Guitar & Bass Accessories › Amplifier Accessories. 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: CELESTION, Fender, BOSS, Eminence, Electro Harmonix, Gain, Gator, Hosa. Every item is a one-off, so the stock moves all day and new deals keep arriving.