Rega Fono MC MK4 Phono Stage

Tagline: Unlock your MC cartridge’s full potential — clean, detailed vinyl playback with precision control.

The Rega Fono MC MK4 is a high‑quality, dedicated phono stage built specifically for low‑output moving‑coil (MC) cartridges. With adjustable gain and loading settings, discrete low‑noise electronics, and precise RIAA equalisation, it gives MC users a clean, dynamic and richly detailed analog signal — ready for any line‑level input. Use it to fully realise your vinyl setup with clarity, accuracy and musicality.

Key Features

• Dedicated MC phono stage: Specifically engineered for low-output moving‑coil cartridges — not a generic phono amp with a “MC switch.” 
• Adjustable gain & loading: DIP switches on the rear panel let you tailor input impedance and capacitance to match a wide variety of MC cartridges. 
• Discrete low‑noise input stage: Uses Linear Systems LSK389 FETs to minimise noise and preserve signal purity — essential for low‑output MC cartridges. 
• MUSE‑based RIAA equalisation & high‑quality components: Polypropylene capacitors in the signal path and equalisation circuit help ensure stable, accurate response and long-term reliability.
• Wide frequency response: 13 Hz to 100 kHz gives full‑range retrieval — from deep bass to detailed highs — keeping your vinyl playback lifelike. 
• Compact, premium build: Finished in a sleek aluminium case that matches Rega’s latest electronics lineup, for a uniform look in your hi‑fi setup. 
• Lifetime limited warranty: Protection against manufacturing defects, according to Rega’s warranty policy. 

Technical Specifications

Why This Matters

Low‑output MC cartridges produce a very weak signal — without a dedicated MC phono stage like the Fono MC MK4, you risk weak volume, high noise and poor detail. This unit raises the signal cleanly and precisely, letting you connect directly to a line‑level input on your amplifier or DAC. Its adjustable loading and gain controls make it compatible with a wide range of MC cartridges — whether they originate from Rega or other brands — giving you flexibility and future‑proofing.

Best For

• Owners of turntables fitted with low‑output MC cartridges who want maximum detail, dynamic range and noise‑free playback.
• Vinyl enthusiasts upgrading from MM setups and aiming for the enhanced musical resolution that MC cartridges provide.
• Hi‑fi systems where precise phono equalisation and low‑noise signal path makes the difference — especially with high‑sensitivity speakers or carefully tuned rigs.
• Users who value build quality, loaded‑based customisation and long-term reliability in their analog front‑end.

FAQ

Can I use this with a MM cartridge?

No — Fono MC MK4 is optimised for low‑output MC cartridges. MM cartridges generate higher output and need a different phono stage (e.g. MM‑type) for best performance.

Will I need a separate power supply?

Yes — the Fono MC MK4 requires a 24 V AC power input (e.g. from a dedicated PSU) to operate properly. 

Can I adjust the loading for different MC cartridges?

Yes — rear‑panel DIP switches let you set input resistance and capacitance, tailoring the phono stage to the cartridge for optimal sound. 

Care & Maintenance

Place the phono stage on a stable, vibration‑free surface away from power transformers or heavy electrical noise. Use quality RCA cables for connection. Ensure proper grounding of your turntable. Periodically check and clean RCA contacts. Do not expose the unit to moisture or excessive heat.

Ready to unlock your MC cartridge’s full potential? Add Rega Fono MC MK4 to your hi‑fi setup and experience vinyl the way it should sound — detailed, dynamic and beautifully natural.