Kahayan is a Madrid-based pro-audio and guitar gear maker founded by Pablo Kahayan, an Argentine engineer and guitarist born in Buenos Aires who relocated to Spain in 1991. After early years modifying tube amplifiers and working out of a Madrid music school, Kahayan built the company into a small-batch manufacturer of handmade equipment for guitarists, bassists, and recording studios.

The lineup spans guitar amplifiers such as the Rayo and Eryngii, the 8x4 and MIDI 16x8 amp/speaker switchers, K1 Krystal One and 12K72 preamps, the Solid 4000 mix bus processor, Epsilon summing mixers, the PBX-1 parallel tube EQ, and the 4K7 tube microphone. The designs lean on vintage components and topologies drawn from classic Telefunken, Neumann, Neve, and Pultec gear.

The 8x4 Amp/Speaker Selector — which lets players route a single signal across up to eight amps and four cabinets — is the brand's most widely distributed product and has been used by session guitarist Tim Pierce. Other artists and engineers associated with Kahayan's work include Paco de Lucía, Vicente Amigo, Josemi Carmona, and Rafa Sardina.

Kahayan has 6 products cataloged on Equipboard, including Condenser Microphones, Speakers & Accessories, and Amplifier Footswitches. Their gear is featured by 6 artists, with the strongest followings in Rock, Pop, and Folk, World, & Country. Notable users include Tim Pierce, Michael League, and Rob Harris.