Rega Aos MM/MC Phonostage
Rega Aos MM/MC Phonostage
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Rega Aos MC Moving Coil Phonostage
“The Aos MC has perfect timing and delivers the musical goods in a compelling fashion, if you really want to know what’s cut into the groove wall take your favourite vinyl down to your local Rega dealer at the earliest opportunity.”
A fully adjustable moving coil phonostage with two-stage all-analog circuitry, adjustable loading, and selectable gain
The Rega Aos MC is a dedicated moving coil phonostage designed to work with a wide range of MC cartridges. Its circuit design is based heavily on Rega’s reference Aura MC phonostage, with adjustable loading and gain options that allow it to be matched to different cartridge requirements.
The Aos MC uses a two-stage all-analog amplifier with no digital control circuitry. Its fully aluminum half-width case helps screen the internal circuit from stray RFI, while the circuit layout avoids unnecessary components in the signal path. A self-adjusting servo control compensates for variations in ambient or operating temperature.
The first stage uses parallel-connected, low-noise FETs configured as a compound pair, with no bias current flowing in the cartridge coil. The MC input provides selectable resistive loading from 70 Ω to 400 Ω, capacitive loading from 1,000 pF to 4,300 pF, and a 6 dB input sensitivity adjustment via the rear panel. Automatic standby is included and can be deactivated using rear-panel DIP switches.
The second stage is a symmetrical, class A, differential amplifier with a common base driver stage; this is also used as the active amplifier in the low-frequency part of the RIAA equalization stage.
Features
- Dedicated moving coil phonostage
- Fully adjustable loading
- Factory pre-set for use with all Rega MC cartridges
- Circuit design based on the Reference Aura MC
- Custom aluminum design half-width case
- Automatic standby
Specifications
Type: Moving coil phonostage
Circuit Design: Two-stage all-analog amplifier
Input Load: 70 Ω, 100 Ω, 150 Ω, 400 Ω
Capacitive Load: 1,000 pF, 4,300 pF
RIAA Accuracy: Better than ±0.2 dB, 65 Hz–70 kHz, 100 kΩ output load
Input Sensitivity (Gain I, Gain II): 69.3 dB, 63.5 dB
Power Consumption: 20 W
Standby Power Consumption: 0.4 W
Dimensions (WHD): 8.66" x 3.15" x 12.99" (220 x 80 x 330 mm)
Weight: 6.39 lb. (2.9 kg)