{"product_id":"api-550a-eq-reissue-used","title":"API 550A EQ Reissue (Used)","description":"Few equalizers enjoy the respect and admiration of the coveted \u003cspan style=\"font-weight: bold;\"\u003eAPI 550A\u003c\/span\u003e.\n Designed by the now-legendary Saul Walker in the late '60s, the \ndiscrete 550A was first used as a modular OEM equalizer. As the industry\n rapidly embraced the sonic quality of the 550A, it quickly found its \nway into many custom console designs by Frank DeMedio and other leading \nengineers. Many of these consoles are still in use today.\u003cbr\u003e\n\u003cbr\u003e\nForty years later, the 550A remains the standard against which other EQs\n are measured, and it has played a major role in the recording industry \nfor decades. Still copied but never duplicated, the 550A became API's \nstandard channel module EQ when the company began manufacturing consoles\n in 1971. With virtually all existing units spoken for, popular demand \nfor this EQ resulted in API finally resuming production in 2004.\u003cbr\u003e\n\u003cbr\u003e\nThe 550A provides reciprocal equalization at 21 points in 7 steps of \nboost to a maximum of 12dB of gain at each point. The fifteen \nequalization points are divided into three overlapping ranges. The high \nand low frequency ranges are individually selectable as either peaking \nor shelving, and a band-pass filter may be inserted independently of all\n other selected equalization settings. Frequency ranges and boost\/cut \nare selected by three dual-concentric switches, and a pushbutton \"in\" \nswitch allows the EQ to be silently introduced to the signal path. A \nsmall toggle switch is used to insert the band-pass filter into the \n550A.\u003cbr\u003e\n\u003cbr\u003e\nThe combination of Walker's incomparable 2520 op amp and his \n\"Proportional Q\" circuitry gives the 550A user an uncomplicated way to \ngenerate acoustically superior equalization.\u003cbr\u003e\n\u003cbr\u003e\nWith the long-awaited reissue of this unit, an EQ that has had such a \npart in the history of recording is continuing to make history in \ntoday's music.\u003cbr\u003e\n\u003cbr\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eFeatures\u003c\/span\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003e3 bands of classic API equalization\u003c\/li\u003e\n\u003cli\u003eEach band offers 7 API selected frequency centers\u003c\/li\u003e\n\u003cli\u003eReciprocal and repeatable filtering\u003c\/li\u003e\n\u003cli\u003eMaximum 12 dB of boost\/cut per band\u003c\/li\u003e\n\u003cli\u003eEQ Band 1 and 3 offer shelf\/peak switching\u003c\/li\u003e\n\u003cli\u003e\"Proportional Q\" narrows filter Q at extremes\u003c\/li\u003e\n\u003cli\u003eTraditional API fully discrete circuit design\u003c\/li\u003e\n\u003cli\u003eHigh headroom +30 dB clip level \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449459634279,"sku":"20939","price":795.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_api_550a_reissue_cat_346cdafb-c41b-402a-b3d3-d992e56f73f4.jpg?v=1787089042","url":"https:\/\/vintageking.mom\/products\/api-550a-eq-reissue-used","provider":"Vintage King","version":"1.0","type":"link"}