The Soundcraft EFX uses the highly transparent GB30 Mic amp designed by Graham Blythe. The Soundcraft EFX offers a configurable aux send, XLR and 1/4″ metal jack connector sockets, RCA phono inputs and outputs, 3-band EQ, inserts, ten-segment LED output metering and a headphone output. The Effects section fits neatly into the mixers compact framework with an effects send on each channel. There are 32 effects to choose from with a tap tempo function, 3 effects parameter controls and a user effects setting store facility. An effects channel level clip LED and Mute function gives the user even more flexibility.