{"product_id":"aea-ku4-ribbon-microphone-10082-used","title":"AEA KU4 Ribbon Microphone #10082 (Used)","description":"\u003cp\u003eThe AEA KU4 celebrates the legendary RCA unidirectional KU3A, a high sensitivity microphone designed for the Hollywood movie studios. Also known as a M-10001 for its manufacturing number, it was RCA’s most expensive ribbon microphone. Fewer than 600 were ever manufactured.\u003cbr\u003e\u003cbr\u003eWhat made the KU3A special? It combined the smooth ribbon sound of a 44 with a unidirectional pattern, a wide sweet spot and less proximity bass boost. It expanded an engineer’s range of placement choices and became a standard at film studios around the world.\u003cbr\u003e\u003cbr\u003eAlthough condenser mics became the new standard by the end of the 1960s, ribbon mics are still appreciated today by experienced music recording engineers. However the KU3A is a rare microphone, a collector’s item, and few studios or rental houses own them. Opportunities to work with a good KU3A are limited.\u003cbr\u003e\u003cbr\u003eWe are proud to expand your opportunities with the AEA KU4 featuring an RCA ribbon, interchangeable KU3A parts and consistent performance.\u003cbr\u003e\u003cbr\u003eFeatures\u003c\/p\u003e\u003cul style=\"margin: 1em 0px; padding: 0px 0px 0px 40px; list-style-position: initial; list-style-image: initial;\"\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eContemporary realization of the RCA KU3A classic\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eSupercardioid pattern for excellent rear rejection\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eReduced proximity effect\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eSmooth, high-bandwidth frequency response\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eAuthentic New Old Stock RCA ribbon material\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eHigh-quality anodized \u0026amp; nickel-plated finish\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eCustom AEA transformer, neodymium magnets\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eConsistent Quality\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eField-tech replaceable ribbon assembly\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eHand-crafted in Pasadena, California\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eHow is the KU4 different from other ribbon microphones?\u003cbr\u003eThe KU4’s suppressed rear lobe is useful when the back of a figure-of-eight would pick up undesirable sounds. The KU4’s reduced proximity bass boost facilitates closer micing and its low-tuned ribbon delivers solid, undistorted bass. These characteristics make the KU4 well suited for modern studio production.\u003cbr\u003e\u003cbr\u003eIts lightly-tensioned, ultra low mass ribbon has a frequency response out to 40 kHz and fast, accurate transients. There is no upper midrange ringing common to large condenser mics. The KU4’s ribbon is well protected and its field-tech replaceable pole piece and ribbon assembly is a real convenience if an accident occurs.\u003cbr\u003e\u003cbr\u003eThe KU4 is your ticket to discovering why the KU3A has been part of high-end studio life for over 60 years. AEA is honored to play a part in its history, and invites you to listen to the KU4 and claim your part of this legacy.\u003cbr\u003e\u003cbr\u003eSpecifications\u003c\/p\u003e\u003cul style=\"margin: 1em 0px; padding: 0px 0px 0px 40px; list-style-position: initial; list-style-image: initial;\"\u003e\n\u003cli style=\"margin: 0px; padding: 0px; font-size: 10.6667px;\"\u003eOperating Principle: Velocity microphone\u003cul style=\"margin: 1em 0px; padding: 0px 0px 0px 40px; list-style: disc;\"\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eFrequency Response: Below 30 Hz to above 20 kHz\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eMaximum SPL: 140 + dB SPL above 200Hz for 1% third harmonic\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eOutput Sensitivity: 2.8 mV\/Pa into unloaded circuit\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eOutput Impedance: 300 Ω nominal\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eRecommended Load: 1.2 KΩ or greater\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003ePhantom power: Not required or recommended\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003ePolarity: Pin 2 high for positive pressure at the front of the microphone.\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eConnector: XLR-3M wired to a 1.5 meter captive cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px; font-size: 10.6667px;\"\u003eOff Axis Response\u003cul style=\"margin: 1em 0px; padding: 0px 0px 0px 40px; list-style: disc;\"\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003ePolar Pattern: Supercardioid\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eRelative Output at 180° (dB): -12\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eAngle of Maximum Rejection: 135°\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px; font-size: 10.6667px;\"\u003eTransducer element\u003cul style=\"margin: 1em 0px; padding: 0px 0px 0px 40px; list-style: disc;\"\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eRibbon Thickness: 1.8 microns ( .0000018 meter ) of pure aluminum\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eRibbon Width: 0.082\" (2.1 mm)\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eRibbon Length: 1.25\" (28.6 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px; font-size: 10.6667px;\"\u003eAccessories\u003cul style=\"margin: 1em 0px; padding: 0px 0px 0px 40px; list-style: disc;\"\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eIncluded: Custom storage\/shipping case, stand adapter, manual and\u003c\/li\u003e\n\u003cli style=\"margin: 0px; padding: 0px;\"\u003eattached 1.5 meter microphone cable\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AEA","offers":[{"title":"Default Title","offer_id":44450708521063,"sku":"156579","price":4295.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/aea-ku4-ribbon-microphone-10082-used_156579_1_291bb6a5-b79a-4dc6-acf9-d42081e01429.jpg?v=1787094187","url":"https:\/\/vintageking.mom\/products\/aea-ku4-ribbon-microphone-10082-used","provider":"Vintage King","version":"1.0","type":"link"}