{"product_id":"rega-aos-moving-coil-phono-preamplifier","title":"Rega AOS Moving Coil Phono Preamplifier","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis is a pre-order, with shipment expected mid to late spring 2026.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eRega AOS Moving Coil Phono Preamplifier Key Features:\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cstrong\u003eAura-Derived Circuitry\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e - \u003c\/strong\u003eutilizes a design heavily based on the reference-level Aura phono stage to deliver flagship-grade definition and realism\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003eFully Adjustable Loading\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e - \u003c\/strong\u003eprovides extensive resistive and capacitive settings, ensuring a perfect electrical match for a vast array of high-end MC cartridges.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cstrong\u003ePure Analog Signal Path\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e - \u003c\/strong\u003eeliminates digital control circuitry and unnecessary components to maintain total signal purity and prevent audio degradation.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cstrong\u003eClass A Symmetrical Architecture\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e - \u003c\/strong\u003eemploys ultra-low noise FET transistors in a complementary configuration for superior transparency and extremely low distortion.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli aria-level=\"1\" dir=\"ltr\"\u003e\n\u003cp role=\"presentation\" dir=\"ltr\"\u003e\u003cstrong\u003eCustom Half-Width Aluminum Case\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e -\u003c\/strong\u003e offers a compact footprint while providing essential shielding against RFI and electromagnetic interference.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eProduct Description\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe AOS is a high-performance, dedicated moving coil pre-amplifier designed without compromise to extract the maximum detail from vinyl recordings. Borrowing heavily from the engineering found in the reference Aura MC stage, the AOS is housed in a bespoke, half-width chassis. It is engineered to bring a sense of lifelike presence to any analog system, making it a versatile and essential partner for high-quality moving coil cartridges.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003ePure Analog\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe AOS functions as a strictly dual-stage, all-analog amplifier, intentionally excluding digital control circuits to avoid interference. Its solid aluminum casing serves as a critical shield against RFI, protecting the delicate low-level signals. Rega’s engineering team has streamlined the signal path, removing superfluous components that might color the sound. To ensure stability across different environments, the unit features a sophisticated self-adjusting servo control that manages thermal variations during operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eCircuit Design\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe hardware utilizes low-noise Field Effect Transistors (FETs) arranged in parallel as a compound pair. This specific choice of FETs prevents bias current from entering the cartridge coil, protecting the cartridge’s sensitive magnetic alignment. The interface is highly customizable, offering resistive loading from 70 Ω to 400 Ω and capacitive loading between 1000 pF and 4300 pF. Additionally, the rear panel allows for a 6 dB sensitivity adjustment and includes an optional automatic standby mode for energy efficiency.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eFirst Stage\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe initial gain stage is a symmetrical, complementary Class A amplifier featuring ultra-low noise FETs from Linear Systems. By utilizing these specific transistors, the design removes the need for coupling components between the cartridge and the input, which often degrade sonic clarity. These FETs are meticulously matched and graded to drive the passive high-frequency section of the RIAA equalization stage with absolute precision.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cspan\u003eSecond Stage\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe subsequent stage consists of a symmetrical, Class A differential amplifier. This stage incorporates a common base driver and serves as the active component for the low-frequency portion of the RIAA equalization. This two-part approach ensures that the equalization curve is handled with balanced accuracy across the entire frequency spectrum.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv align=\"left\" dir=\"ltr\"\u003e\n\u003ctable\u003e\n\u003ccolgroup\u003e \u003ccol width=\"161\"\u003e \u003ccol width=\"389\"\u003e \u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eType\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eDedicated Moving Coil (MC) Phono Stage\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCircuitry\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAll-analog, Two-stage Class A\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInput Sensitivity\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAdjustable via back panel (6 dB range)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eResistive Loading\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e70 Ω to 400 Ω (adjustable)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCapacitive Loading\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e1000 pF to 4300 pF (adjustable)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eInput Stage\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eLinear Systems Ultra-low noise FETs\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eEqualization\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003ePassive High-Frequency \/ Active Low-Frequency RIAA\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eChassis\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eCustom half-width aluminum\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eStandby Mode\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eAutomatic (deactivatable via dip switches)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eLifetime warranty against manufacture defects\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp dir=\"ltr\"\u003e \u003c\/p\u003e","brand":"The Music Room","offers":[{"title":"Default Title","offer_id":52226276000025,"sku":"7010newREGA","price":2395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0844\/4225\/1545\/files\/Rega_AOS_MovingCoil_Phono_Preamplifier_1.jpg?v=1776109261","url":"https:\/\/tmraudio.com\/products\/rega-aos-moving-coil-phono-preamplifier","provider":"The Music Room","version":"1.0","type":"link"}