{"product_id":"rega-aos-moving-coil-phono-stage","title":"Rega AOS Moving Coil Phono Stage","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eDerived from Rega's award-winning Aura reference phono stage, the AOS is a fully adjustable, no-compromise moving coil preamplifier built for serious vinyl listening. Its all-analogue, two-stage circuit contains zero digital control circuitry, and the precision aluminium case shields everything from stray RFI interference — leaving only a pure, uncoloured path between your cartridge and your music.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eDesigned to partner with a wide range of MC cartridges, the AOS offers ample gain for low-output moving coils alongside extensive load adjustability — resistive loading from 70 Ω to 400 Ω and capacitive loading from 1000 pF to 4300 pF. A self-adjusting servo control compensates for temperature variations, while input sensitivity can be shifted by 6 dB via the rear panel, making the AOS a truly versatile foundation for any high-performance turntable setup.\u003c\/p\u003e\n\u003ch2 class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFeatures\u003c\/h2\u003e\n\u003cul class=\"bullet-list green-bullets\"\u003e\n\u003cli\u003eDedicated moving coil phono stage\u003c\/li\u003e\n\u003cli\u003eFully adjustable for loading\u003c\/li\u003e\n\u003cli\u003eFactory pre-set for use with all Rega MC cartridges\u003c\/li\u003e\n\u003cli\u003eCircuit design based on the Reference Aura MC\u003c\/li\u003e\n\u003cli\u003eCustom aluminium design half width case\u003c\/li\u003e\n\u003cli\u003eAutomatic standby function\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFirst Stage\u003c\/h3\u003e\n\u003cdiv class=\"xxxlarge-6 cell module-2-content\"\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"xxxlarge-6 cell module-2-content\"\u003e\n\u003cp\u003e 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.\u003c\/p\u003e\n\u003ch3\u003eSecond Stage\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe 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.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Rega","offers":[{"title":"Default Title","offer_id":50248878326117,"sku":"AOS","price":2999.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0860\/5440\/4453\/files\/rega-aos-mc-moving-coil-phono-preamp.png?v=1779729608","url":"https:\/\/trutone.ca\/products\/rega-aos-moving-coil-phono-stage","provider":"Trutone Electronics","version":"1.0","type":"link"}