Coopersonic Deluxe Valve Overdrive - Hand Wired in the UK The Deluxe features a rugged die-cast enclosure; true bypass switching using a high-quality three-pole footswitch with a hi-brightness blue led indicator. There are two NOS Mullard valves running at high voltage for premium tone, with a two-band eq for a wide range of sound-shaping possibilities. We don’t put the valves on the outside or light them up with orange LEDs – we put them inside where they’re protected since they’re there for the sound, not as some kind of a gimmicky light show. The pedal ships with ECC81/12AT7 Mullard NOS valves. These valves sound amazing. ECC83/12AX7 types can also be used; this will give more gain and a generally harsher tone. Changing the valve nearest the input socket will have the greatest effect on the sound. All instructions on customizing your pedal are included in the box.