KHE Audio Electronics is a boutique audio electronics company based in Lucerne, Switzerland, specializing in amplifier and speaker cabinet switching systems. Founded by Markus as a one-person operation, KHE designs and hand-builds all of its products in Switzerland using premium components such as AMPHENOL jacks and OMRON relays, with each unit undergoing 24 hours of testing before shipment.

The company's flagship product line is the ACS (Amplifier Cabinet Selector) series, a range of rack-mounted switchers that allow guitarists and producers to instantly switch between multiple amplifiers and speaker cabinets with the push of a button. The lineup spans several configurations, from the compact ACS 4x2 (four amps, two cabs) to the ACS 8x4 (eight amps, four cabs), with variants like the ACS 4x4 FX and AFX 8-MV adding switchable effects loops and master volume controls. The ZMX-1 automatic impedance matcher rounds out the product range. All ACS units use a digitally controlled relay matrix for click-free, transparent switching, and include built-in dummy loads to protect tube amplifiers when switching between loads.

KHE has found a strong following among recording studios and professional producers, where the ability to A/B amplifiers in real time streamlines the tone-selection process. Notable users include producers and engineers Andy Sneap (Judas Priest, Exodus, Testament), Romesh Dodangoda (Motorhead, Bring Me The Horizon), and Lasse Lammert (Alestorm, Gloryhammer), as well as Whitechapel guitarist Zach Householder. Multiple ACS units can be daisy-chained via link mode, enabling configurations of up to 15 connected switchers for large amp collections.

KHE Audio has 3 products cataloged on Equipboard, including Switch Effects Pedals. Their gear is featured by 3 artists, with the strongest followings in Rock, Metal, and Pop. Notable users include Andy Sneap, Fraser T. Smith, and Euge Valovirta.