Rega Aos MC Phono Preamp

The Rega AOS MC is a high-performance moving coil phono preamplifier designed to bring reference-level analogue performance to a wider range of vinyl systems. Positioned between the Fono MC Mk4 and the flagship Aura MC, this unit distills core circuit architecture into a compact, dedicated component that preserves the delicate signal generated by moving coil cartridges.

Pure Analogue Signal Path:

At the heart of the Rega AOS MC is a two-stage Class A amplifier topology derived directly from top-tier research. The design utilizes ultra-low-noise parallel FET transistors configured as compound pairs to maximize detail retrieval while keeping the noise floor extremely low. Crucially, this FET configuration prevents bias current from flowing through the cartridge coil, preserving the internal magnetic geometry of the pickup and allowing the stylus to trace groove dynamics without electrical interference.

Tailored Cartridge Compatibility:

To ensure optimal impedance matching across a wide array of moving coil cartridges, rear-panel switches provide full adjustments for system integration. Listeners can select resistive loading from 70Ω to 400Ω, capacitive loading from 1000pF to 4300pF, and engage a switchable 6 dB gain boost to accommodate extra-low-output cartridges. By reducing inter-stage coupling components to an absolute minimum, the signal path retains maximum clarity from stylus tip to output.

Shielded Aluminum Construction:

Built to protect subtle audio signals from external degradation, the Rega AOS MC features a rigid half-width aluminum chassis that provides effective shielding against radio frequency and electromagnetic interference. An internal self-adjusting servo circuit maintains thermal stability across long listening sessions, while an automated standby feature reduces energy usage when the unit sits idle.

Authorized Dealer:

We are an authorized dealer for Rega. Purchasing from a trusted brand partner ensures your unit is backed by full manufacturer's warranty coverage and expert technical support throughout its lifespan.

• Class A Amplifier Topology: Delivers linear, low-distortion amplification using a pure analogue circuit layout.
• Ultra-Low-Noise FET Inputs: Extracts subtle dynamic details from record grooves while maintaining a silent background.
• Adjustable Resistive Loading (70Ω to 400Ω): Matches cartridge impedance to achieve balanced tonal accuracy.
• Adjustable Capacitive Loading (1000pF to 4300pF): Fine-tunes high-frequency output based on cartridge specifications.
• Switchable Gain Control (63.5 dB / 69.3 dB): Provides clean voltage amplification for cartridges with varying output levels.
• Shielded Aluminum Chassis: Prevents radio frequency and electromagnetic interference from degrading audio signal purity.
• Self-Adjusting Servo Control: Stabilises circuit operating temperature to ensure consistent sonic performance.
• Automatic Standby Function: Reduces overall power consumption during inactive periods.