ZED-10FX’s pre-amps are similar in design to our MixWizard range of mixers, but with a twist! Inputs 3 & 4 have a high impedance jack input capable of taking either a normal line level or a low level input from a guitar pickup. These newly designed inputs have been crafted with the aim of replicating the sound of a classic guitar or instrument tube pre-amp in a combo or head amp. An extremely high input impedance ensures loading on pick-ups is minimal and a Class A FET (field effect transistor) circuit powered from 48V is employed to give the valve-like gain stage. There is a gain “Boost” switch associated with the guitar inputs which boosts gain by 26dB to cater for instruments with very low level outputs and the overdrive characteristics of the guitar inputs are very similar to a valve (tube) circuit, being asymmetric and soft. All this makes for a wonderfully natural sound to be reproduced from the instrument, full of warmth and character.