Carl Martin Octa Switch MK III

Carl Martin Octa-Switch MK 3 - switching system for effects pedals, new layout, 8x individual loops, 8x DIP switches, 8x channel switches, 7x send/return, 1x send/return R/L, input for buffer switch for 100% true bypass with gold relays, switchable Buffer, . master bypass, 2 external switch for amp channel switch, powered by 2x 9V batteries or 9V DC power supply (not included), dimensions: 311 (W) x 155 (D) x 65 (H) mm, weight: 1,6 kg.

https://www.youtube.com/watch?v=Ft1rgXKaOoM