Rega Fono MC MK4 The Fono MC MK4 is a high-quality phono stage to maximize the potential of low-output MC cartridges, offering full adjustability for gain and loading. Its redesigned case matches the Fono MM MK5 and Neo MK2 for a modern look. It uses the Linear Systems LSK389 FET for a low-noise, linear input stage, with a high input impedance so the amplifier won’t affect cartridge performance.     KEY FEATURES Dedicated moving coil phono stage Simple connectivity and operation Fully adjustable via DIP switches via rear panel MUSE operational amplifier used in RIAA equalization amplifier Two selectable gain settings Default factory settings matched for all Rega MC models Latest design custom casework   Polypropylene capacitors used in circuits, selectable input loading & two gain settings make Fono MC MK4 compatible with most MC cartridges. Developed on the Aria phono amp, Fono MC MK4 features a new aluminum case like Neo MK2 PSU & Fono MM MK5 phono stage. .