Multipurpose – works from pickup, amp, speaker outputs and even 100 volt line etc. Output fully floating, nom. 10mV, presenting a 600 ohm impedance suitable for most microphone inputs on mixers etc. Earth lift switch on E520, E525 and E545 minimises hum problems. Safety-isolated to 1kV. Robust, housed in strong diecast metal box, with durable epoxy coating. Dimensions: 110 ×60 × 35mm (single unit) – 120 ×95 ×36mm (dual unit).