NEW Rega AOS MC phono preamplifier

3 March 2026

One of the hottest new releases at the recent Bristol Hi-Fi Show was Rega Research’s AOS moving coil phono stage.

AOS is a dedicated, no compromise, fully adjustable moving coil pre-amplifier using a circuit design based heavily on Rega’s award-winning Aura reference MC phono stage. Housed in a custom made Rega half width case and designed to work with a wide range of moving coil cartridges, AOS has plenty of gain for low output MC’s and excellent load adjustability making it the perfect partner for a wide variety of MC carts. RRP is £1500.

Pure Analogue
The AOS is a two stage “all analogue amplifier” with no digital control circuitry. The fully aluminium case screens internal circuitry from any stray RFI signals and incorporates many innovative design ideas including a self-adjusting servo control which compensates for any variations in ambient or operating temperature.

The AOS utilises parallel connected, low noise FETs (Field Effect Transistors) configured as a compound pair. This ensures there is no bias current flowing in the cartridge coil that could upset the delicate magnetic geometry of the cartridge. The MC input provides 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.

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
• Rega Lifetime warranty against manufacturing defects