Diago is a British pedalboard and pedal-power accessory company founded in 2005 by James Kitchen, a design engineer who started the brand after struggling to find a pedalboard that met his needs as a working guitarist. The company built its reputation on hard-case pedalboards that double as flight-style transport cases, hand-assembled in England from half-inch plywood wrapped in a durable polyweave skin and fitted with steel corner reinforcements, amp-style handles, and roadworthy hinges and catches.

The core lineup centers on three sizes of hardcase pedalboards — the Gigman, Showman, and Tourman — alongside the soft-cased Commuter for smaller rigs. Beyond boards, Diago is known for the Powerstation, an isolated switch-mode pedal power supply rated to drive up to around 30 effects, and the smaller Micropower9 for compact rigs. The Patchfactory solderless patch-cable system rounds out the catalog, letting players cut and assemble custom-length cables without tools.

Distributed through major retailers including Guitar Center, Musician's Friend, zZounds, PMT, and Gear4music, Diago products are aimed at gigging guitarists and bassists who want roadworthy gear at a mid-tier price rather than boutique-level cost.

Diago has 6 products cataloged on Equipboard, including Effects Pedal Accessories, Pedalboards, and Bags & Cases. Their gear is featured by 9 artists, with the strongest followings in Rock, Jazz, and Electronic. Notable users include Matthew Murphy, Joe Shrewsbury, and Tord Øverland Knudsen.