{"product_id":"rega-aos-moving-coil-phono-stage","title":"Rega - AOS -  Moving Coil Phono Stage","description":"\u003ch1\u003e\u003cspan\u003eRega AOS Moving Coil Phono Stage – Premium Adjustable MC Pre-Amplifier\u003c\/span\u003e\u003c\/h1\u003e\n\u003ch2\u003e\u003cspan\u003eExceptional Moving Coil Phono Amplification for Audiophiles\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Rega AOS is a dedicated, no-compromise moving coil (MC) phono stage engineered to deliver outstanding vinyl playback performance. Drawing heavily from the acclaimed circuit design of Rega's award-winning Aura reference MC phono stage, the AOS offers remarkable clarity, exceptional detail retrieval, and a highly realistic listening experience that brings every record collection to life.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eHoused in a bespoke half-width aluminium chassis, the AOS is designed for discerning vinyl enthusiasts seeking the ultimate performance from their moving coil cartridges.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eDesigned for Maximum Cartridge Compatibility\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe AOS has been developed to work seamlessly with a wide range of moving coil cartridges. With ample gain for low-output MC cartridges and extensive loading adjustment options, it provides precise cartridge matching and optimal sonic performance regardless of the cartridge selected.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFactory pre-configured for all Rega moving coil cartridges, the AOS also offers comprehensive user-adjustable settings for audiophiles who wish to fine-tune their system.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003ePure Analogue Signal Path\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBuilt as a true two-stage analogue amplifier, the AOS contains no digital control circuitry. Every aspect of the design focuses on preserving signal integrity and minimising unwanted interference.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe custom-machined aluminium enclosure provides effective shielding against radio frequency interference (RFI), while the carefully optimised signal path eliminates unnecessary components that could compromise audio quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAn innovative self-adjusting servo control system automatically compensates for temperature variations, ensuring consistent performance in all operating conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eAdvanced Low-Noise FET Technology\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAt the heart of the AOS are parallel-connected ultra-low-noise Field Effect Transistors (FETs) arranged in a sophisticated compound-pair configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eUnlike conventional transistor designs, the FET architecture ensures that no bias current flows through the cartridge coils, preserving the delicate magnetic structure of the cartridge and maintaining exceptional signal purity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe MC input stage provides adjustable resistive loading from 70Ω to 400Ω and capacitive loading from 1000pF to 4300pF, allowing precise optimisation for a broad range of moving coil cartridges. Input sensitivity can also be increased by 6dB via the rear panel for ultra-low-output cartridges.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor energy efficiency, an automatic standby function places the unit into sleep mode after periods of inactivity, with the option to disable this feature through rear-panel DIP switches.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eDedicated moving coil (MC) phono stage\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFully adjustable cartridge loading settings\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFactory preset for all Rega MC cartridges\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCircuit topology derived from the Rega Aura reference phono stage\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUltra-low-noise Class A analogue design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCustom half-width aluminium chassis\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdjustable gain for low-output MC cartridges\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAutomatic standby mode with user override\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrecision-matched FET input stage\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLifetime warranty against manufacturing defects\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eFirst Stage: Ultra-Low Noise Class A Input Amplifier\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe first amplification stage employs a symmetrical complementary Class A circuit using carefully selected and matched Linear Systems ultra-low-noise FET transistors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis advanced topology ensures there is no bias current flowing through the cartridge coils, preventing any disruption to the cartridge's magnetic geometry. The direct-coupled input design also eliminates the need for signal-degrading coupling components between the cartridge and amplifier stage.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe precisely matched FET devices provide exceptional noise performance and drive the passive high-frequency section of the RIAA equalisation network with remarkable accuracy and transparency.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eSecond Stage: Precision Differential Class A Amplification\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe second stage utilises a symmetrical Class A differential amplifier with a common-base driver configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis stage performs dual functions: providing high-gain signal amplification while simultaneously serving as the active amplification section for the low-frequency portion of the RIAA equalisation circuit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe result is exceptional tonal accuracy, precise bass reproduction, and a natural, engaging musical presentation that faithfully reproduces the original recording.\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Load\u003c\/td\u003e\n\u003ctd\u003e70, 100, 150, \u0026amp; 400 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacitive Load\u003c\/td\u003e\n\u003ctd\u003e1000, 4300 pF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRIAA Accuracy (100 kΩ output load)\u003c\/td\u003e\n\u003ctd\u003eBetter than ±0.2 dB (65 Hz – 70 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e17.5 Hz (-3 dB) to 100 kHz (-0.2 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Sensitivity\u003c\/td\u003e\n\u003ctd\u003e69.3 dB (Gain Setting I), 63.5 dB (Gain Setting II)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption (Standby)\u003c\/td\u003e\n\u003ctd\u003e0.4 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e20 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W × H × D)\u003c\/td\u003e\n\u003ctd\u003e220 × 80 × 330 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.9 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Rega","offers":[{"title":"Default Title","offer_id":49231481340161,"sku":null,"price":2999.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1133\/9398\/files\/AOS_gallery_1__281_29.jpg?v=1780630983","url":"https:\/\/sydneyhifimonavale.com.au\/products\/rega-aos-moving-coil-phono-stage","provider":"Sydney Hi-Fi Mona Vale","version":"1.0","type":"link"}