Rega AOS MC Phono Preamplifier - Black

Rega AOS MC, phono preamplifier for MC Cartridges, in black colour.

The AOS is a dedicated no compromise fully adjustable moving coil pre-amplifier using a circuit design based heavily on award-winning Aura reference MC phono stage.  Housed in a custom made Rega half width case, the AOS will deliver exceptional definition and greater realism to all of your recordings, bringing your favourite vinyl to life.

Designed to work with a wide range of moving coil cartridges it has plenty of gain for low output MCs and excellent load adjustability making it the perfect partner for whichever Moving Coil you are using.

The AOS utilises parallel connected, low noise FETs (Field Effect Transistors) configured as a compound pair. The use of FET transistors ensures there is no bias current flowing in the cartridge coil so as not to upset the delicate magnetic geometry of the cartridge. The MC input has the provision for selecting resistive input loading of 70 Ω to 400 Ω and capacitive loading of 1000 pF to 4300 pF. The input sensitivity can be changed by 6 dB via the back panel. An automatic standby feature has also been added which puts the unit to sleep after a period of no signal. This can be deactivated via dip switches located on the rear panel.

Key Features

Dedicated moving coil phono stage
Fully adjustable for loading
Factory pre-set for use with all Rega MC cartridges
Circuit design based on the Reference Aura MC
Custom aluminium design half width case
Automatic standby function

Input Load: 70, 100, 150, & 400Ω
Capacitive Load: 1000, 4300pF
RIAA Accuracy (100kΩ output load): Better than ±0.2dB 65Hz to 70kHz
Frequency Response: 17.5 Hz (-3 dB) to 100 kHz (-0.2 dB)
THD: 0.03%
Input Sensitivity: 69.3 dB (Gain Setting I), 63.5 dB (Gain Setting II)
Power consumption in Standby: 0.4W
Power Consumption: 20W
Dimensions (WxHxD): 220 x 80 x 330 mm