N-Audio is a Bulgarian manufacturer of handcrafted electronics for studio and stage, based in Plovdiv and founded by engineer Nikolay Hristov. Before launching the company, Hristov worked as an engineer at Bulgarian National Radio and later as a PCB and 3D designer for Swedish bass amplification company EBS, in addition to collaborations with Schneider Electric on industrial controllers.

The brand specializes in amp and cabinet switching systems for guitar and bass rigs, with its flagship 8X7 Amp Cabinet Switcher and the more compact 4X4 Amp Cabinet Switcher forming the core of the lineup. Both units route signals between multiple amplifiers and speaker cabinets, with features such as FX-loop switching and support for external power attenuators aimed at players running complex multi-amp setups. N-Audio also produces smaller utility tools for guitarists, including a Guitar Pickup Phase Checker and a Magnetic Pole Detector.

The switchers are used by amplifier builders including Marshall, Friedman, Fender, and TAD for testing and demonstration purposes, and have appeared in the rigs of artists such as John Petrucci, Steve Vai, Slipknot, HIM, Marillion, Kreator, U.D.O., and Haken, as well as in the studio of film composer Mark Mancina.

N-Audio has 4 products cataloged on Equipboard, including Switch Effects Pedals, Effects Pedal Accessories, and MIDI Keyboard Controllers.