Aos MC new
The AOS is a dedicated no compromise fully adjustable moving coil pre-amplifier using a circuit design based heavily on our 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 MC’s and excellent load adjustability making it the perfect partner for whichever Moving Coil you are using.
Pure Analogue
The AOS is a two stage “all analogue amplifier” with no digital control circuitry. The fully aluminium case screens the internal circuit from any stray RFI signals. Our designers have avoided including any unnecessary components or circuits that may degrade the signal path. The AOS 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. 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
- Lifetime warranty against manufacture defects
First Stage: The first stage is a symmetrical, complementary class A amplifier, using Linear Systems ultra-low noise FET (Field Effect Transistor) transistors. 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 input circuit configuration also alleviates the use of any coupling components between the cartridge output and the input stage FET transistors, which would degrade the sound. The complementary ultra-low noise FET transistors are carefully graded and matched for optimum performance.
This stage drives the passive high-frequency part of the RIAA equalisation stage. The complementary ultra-low noise FET transistors are carefully graded and matched for optimum performance. This stage drives the passive high-frequency part of the RIAA equalisation stage.
Second Stage: 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 equalisation stage.
Technical Specifications
- 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
- Weight
2.9Kg
Load settings for adjustable MC stages
- Gain (0dB high gain setting)
- 69.3dB at 1kHz
- Gain (-6dB low gain setting)
- 63.5dB at 1kHz
User Manual Downloads
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Multilingual Manuals
- AOS MC User manual ENG 925KB pdf
- AOS MC User manual DE 920KB pdf
- AOS MC User manual DK 915KB pdf
- AOS MC User manual ES 931KB pdf
- AOS MC User manual FR 918KB pdf
- AOS MC User manual IT 931KB pdf
- AOS MC User manual NL 916KB pdf
- AOS MC User manual PL 935KB pdf
- AOS MC User manual PT 918KB pdf
- AOS MC User manual SW 915KB pdf
Environmental Labelling of Packaging
Complementary Components
- Moving Coil Cartridge
- Unique PPS ultra-rigid body
- Hand-wound micro coil
- Elliptical profile stylus
- Aluminium cantilever
- Rega three point mounting system
- Moving Coil Cartridge
- Unique PPS ultra-rigid body
- Hand-wound micro coil
- ‘Vital’ profile nude diamond stylus
- Super high-powered, neodymium magnet
- Rega three point mounting system
- Moving Coil Cartridge
- ‘Fine line’ profile, nude diamond stylus
- Aluminium cantilever
- Super high-powered, neodymium magnet
- Hand-wound micro coil
- Rega three point mounting system
- Moving Coil Cartridge
- Graded zero tolerance black anodised aluminium body
- Boron rod cantilever
- ‘Fine line’ profile, nude diamond stylus
- Iron micro cross and coil assembly
- World’s most powerful miniaturised neodymium magnet
- High specification fine wire 0.018 mm
- Rega three point mounting system
- Planar 3 RS Edition metallic finish
- RB330 Tonearm
- Nd5 MM cartridge (factory fitted)
- Custom Matched Neo Mk2 PSU
- 12mm opti-white polished glass platter
- Smoked dust cover
- Reference EBLT drive belt
- Double brace technology
- 24v low noise hand tuned motor
- Custom CNC drive pulley
- RB330 tonearm
- Nd5, Nd7 or Ania Pro (optional)
- 16 mm Dual layer float glass platter
- Double brace technology
- Tancast 8 foamcore plinth
- Custom matched Neo PSU
- Smoked dust cover
- Reference EBLT drive belt
- RB880 tonearm
- Nd7, Ania Pro or Apheta 3 (optional)
- 18 mm Triple layer float glass platter
- Double brace technology
- Tancast 8 foamcore plinth
- Custom matched Neo PSU
- Custom designed smoked dust cover
- Reference EBLT drive belt
- RB3000 tonearm
- Apheta 3 or Aphelion 2 (optional)
- 18 mm Ceramic Oxide diamond cut platter
- DB technology with ceramic top brace
- Tancast 8 foamcore plinth
- P10 Advanced PSU
- Custom designed smoked dust cover
- Reference EBLT drive belt
Experience Rega
Contact your nearest Rega dealer or global distributor
Lifetime Limited Warranty
All Rega products carry a Lifetime Limited Warranty.
Every product we make is designed and assembled in the UK to the highest possible standard. This warranty covers confirmed manufacturing defects. This warranty does not cover wear and tear, or parts that are considered consumable. Any unauthorised modifications or failure to follow the Rega recommended guidelines in the product manual may invalidate the warranty. Due to local laws, warranties may vary by country in which units are sold. Please contact your Rega retailer or distributor for warranty details. Your statutory rights are not affected.