Rega Aura MC Reference Moving Coil Phono Preamplifier The Aura MC is the culmination of decades of electronic design development. A fully adjustable, three-stage, all-symmetrical pre-amplifier designed purely to extract the very best performance from your moving coil cartridge and vinyl playback system. If you are a vinyl connoisseur, the Aura MC is an absolute must for demonstration. Key Features Three-Stage Design All-symmetrical circuit topology Fully Adjustable Compatible with all low-output MC cartridges Ultra-Low Noise FETs Linear Systems matched & graded pairs Lifetime Warranty Against manufacture defects Design Innovation Built into a completely re-designed custom case, the Aura is dedicated exclusively to moving coil cartridges with zero compromises. Every superfluous function has been eliminated to keep the signal path pure. Polypropylene capacitors are used throughout, with 1% tolerance types in the RIAA EQ stages. The power supply voltage runs 60% higher than typically found in such a pre-amplifier, maximising headroom. Gain, Mute and Mono switching is implemented via high-quality relays. Circuit Architecture Stage 1 — Input Symmetrical, complementary Class A amplifier using parallel-connected ultra-low noise FET transistors in a symmetrical compound pair. No bias current flows in the cartridge coil, preserving delicate magnetic geometry. No coupling components between cartridge output and FET input. Drives the passive high-frequency RIAA equalisation stage. Stage 2 — RIAA Symmetrical, Class A differential amplifier with a common base driver stage. Also serves as the active amplifier in the low-frequency part of the RIAA equalisation stage. Stage 3 — Output Inverts the signal to provide the balanced output alongside the Stage 2 output. Uses the same circuit topology as Stage 2. Each stage has its own localised power supply and LED-referenced current generators. Technical Specifications Input Load 50, 100, 150, 300 & 400 Ω Capacitive Load 1000, 2000, 3200, 4300, 5700 pF RIAA Accuracy 0.2 dB (100 Hz – 50 kHz) Frequency Response 13.5 Hz (-3 dB) – 100 kHz (-0.2 dB) THD 0.03% Input Sensitivity (Gain I) 69.5 dB Input Sensitivity (Gain II) 63.5 dB Dimensions (W × H × D) 350 × 435 × 88 mm Weight 13 kg For the Vinyl Connoisseur: The Aura MC is a no-compromise reference stage — built without superfluous functions, dedicated entirely to unlocking the full potential of your moving coil cartridge.
