{"product_id":"api-audio-5500-dual-equalizer-2-channel-eq","title":"API AUDIO 5500 Dual Equalizer 2-Channel EQ","description":"\u003cdiv\u003e\n \u003ch2\u003eAPI AUDIO 5500 Overview\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n \u003cdiv\u003e\n  \u003cdiv\u003e\u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv\u003e\n  \u003cdiv\u003e\n   \u003cp\u003eBased on the legendary circuitry of the 550 EQ, the \u003cstrong\u003eAPI Audio 5500 Dual Equalizer\u003c\/strong\u003e is a 2-channel EQ with active balanced XLR and 1\/4\" inputs, and transformer-balanced XLR outs. Sporting four bands per channel, seven selectable frequencies per band, and peak\/shelf selection on the high and low bands, the 5500 is a versatile and powerful rackmounted EQ.\u003c\/p\u003e\n   \u003cp\u003eOne of the most useful functions of the 5500 is the range control: simply adjust the two Range knobs (one per channel) to shift from classic 550 operation to proportionally reduced modes of gain control for micro adjustments, an ideal feature for mastering. The unit sports an EQ In\/Out button for each channel as well as a Bypass button for engaging a true hardwired bypass. The 5500 utilizes purely discrete circuitry (no integrated circuits), including the 2510 and 2520 op-amps and the custom API 2503 output transformer, delivering reliability, the signature API EQ sound, and a high headroom of +30 dBm.\u003c\/p\u003e\n  \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv\u003e\n  \u003cdiv\u003e\n   \u003cdiv\u003e\n    \u003cdiv\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       History of the API Equalizer\n      \u003c\/div\u003e\n     \u003c\/div\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       The lineage of the 5500 circuit can be traced back to the original 550 equalizer designed by Saul Walker, the founder of Automated Processes, Inc. That three-band EQ was originally used in the earliest API consoles built in the 1960s. Engineers were immediately captivated by its fully reciprocal boost\/cut characteristic and its proportional Q design, one of API?s many industry firsts.\n       \u003cp\u003e\u003c\/p\u003e\n       \u003cp\u003eThe 5500 is specifically designed to continue the tradition of API?s precision equalization. It features a balanced input, a true straight-wire bypass, an integrated power supply with noiseless muting, and a range control that expands its versatility to mastering applications.\u003c\/p\u003e\n      \u003c\/div\u003e\n     \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       All-Discrete Design\n      \u003c\/div\u003e\n     \u003c\/div\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       Like all API products, the 5500 contains no integrated circuits in its signal path. The gain comes from two hand-built 2520 operational amplifiers in each channel, and the balanced input is handled by a 2510 discrete operational amplifier.\n       \u003cp\u003e\u003c\/p\u003e\n       \u003cp\u003eBesides being a key component oft he API sound, the 2520 coupled with the API 2503 output transformer is capable of delivering +32 dBu before clipping. With this much headroom, it is unlikely that the 5500 can be driven to distortion.\u003c\/p\u003e\n      \u003c\/div\u003e\n     \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       Proportional Q Technology\n      \u003c\/div\u003e\n     \u003c\/div\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       The Twin T topology is found in many equalizer circuits, but the legendary Saul Walker included a novel Proportional Q section that makes it truly musical. Proportional Q works by spreading the equalizer?s action over a broad bandwidth at low degrees of boost or cut. This provides delicate shading and subtle coloring of the signal?s tone, without leaving the impression that signal processing was applied.\n       \u003cp\u003e\u003c\/p\u003e\n       \u003cp\u003eAs the amplitude is advanced to more extreme settings, the equalizer?s bandwidth narrows to provide the user with surgical precision. This allows the equalizer to be useful in removing undesirable noises or radically emphasizing an aspect of an instrument?s character, such as its attack.\u003c\/p\u003e\n      \u003c\/div\u003e\n     \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       Fully Reciprocal Operation\n      \u003c\/div\u003e\n     \u003c\/div\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       Before the 1960s, few equalizers had the same characteristics in boost mode as in cut mode. Today, it is common for equalizers to be reciprocal, but again, Saul Walkers design is special.\n       \u003cp\u003e\u003c\/p\u003e\n       \u003cp\u003eWhen switching an API EQ from boost to cut, the exact same components are used, reorganized around the amplifier for the appropriate function. This guarantees 100% reciprocity. The 5500 Dual Equalizer API 7 benefit becomes apparent when a track is re-equalized to remove the previously applied equalization. The engineer can be confident that, because of the 5500?s fully reciprocal design, a truly flat frequency response will be restored.\u003c\/p\u003e\n      \u003c\/div\u003e\n     \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       Power Mute and Bypass\n      \u003c\/div\u003e\n     \u003c\/div\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       The 5500 features a true hardwired bypass. In this mode, the output connector is wired directly to the input. Shortly after power is first applied, or immediately after it is lost, a special circuit forces this mode, so signal is never lost and power thumps are never heard. The bypass button illuminates in red when the 5500 is in bypass mode, whenever either the special circuit or the operator put it into bypass.\n      \u003c\/div\u003e\n     \u003c\/div\u003e\n    \u003c\/div\u003e\n   \u003c\/div\u003e\n  \u003c\/div\u003e\n \u003c\/div\u003e\n \u003cdiv\u003e\n  \u003cdiv\u003e\n   \u003ch4\u003eItems Included\u003c\/h4\u003e\n   \u003cul\u003e\n    \u003cli\u003e\u003cspan\u003eAPI AUDIO 5500 Dual Equalizer 2-Channel EQ\u003c\/span\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003cspan\u003eLimited 5-Year Manufacturer Warranty\u003c\/span\u003e\u003c\/li\u003e\n   \u003c\/ul\u003e\n  \u003c\/div\u003e\n \u003c\/div\u003e\n \u003ch4\u003eAdditional Resources \u003c\/h4\u003e\n \u003cdiv\u003e\n  \u003ca\u003e\n   \u003cdiv\u003e\n    \u003cdiv\u003e\u003c\/div\u003e\n    \u003cdiv\u003e\n     \u003cp\u003eUser Manual\u003c\/p\u003e\n     \u003cp\u003e1.1 MB\u003c\/p\u003e\n    \u003c\/div\u003e\n   \u003c\/div\u003e\u003c\/a\u003e\n \u003c\/div\u003e\n \u003cul\u003e\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n \u003cdiv\u003e\n  \u003cdiv\u003e\n   \u003cdiv\u003e\n    \u003cdiv\u003e\n     \u003cdiv\u003e\n      \u003ch2\u003eAPI AUDIO 5500 Specs\u003c\/h2\u003e\n     \u003c\/div\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       General\n      \u003c\/div\u003e\n      \u003ctable\u003e\n       \u003ctbody\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eInput Impedance\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e20 Kilohms\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eOutput Impedance\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e75 Ohms (Balanced)\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eMaximum Input Level\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e+32 dBu\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eMaximum Output Level\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e+32 dBu\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eFrequency Response\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e20 Hz to 30 kHz (?1 dB)\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eSignal-to-Noise Ratio\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e-105 dB\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n       \u003c\/tbody\u003e\n      \u003c\/table\u003e\n     \u003c\/div\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       Inputs\/Outputs\n      \u003c\/div\u003e\n      \u003ctable\u003e\n       \u003ctbody\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eAudio I\/O\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e2x XLR 3-Pin Line Input (Balanced)\u003cbr\u003e2x 1\/4\" TRS Line Input (Balanced)\u003cbr\u003e2x XLR 3-Pin Line Output (Transformer Balanced)\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n       \u003c\/tbody\u003e\n      \u003c\/table\u003e\n     \u003c\/div\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       Power\n      \u003c\/div\u003e\n      \u003ctable\u003e\n       \u003ctbody\u003e\n        \u003ctr\u003e\n         \u003ctd\u003ePower Source\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003eAC Input\u003cb\u003e\u003c\/b\u003e\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eAC Input Power\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e\u003cb\u003eChanging Voltage Requires Manual Switching\u003c\/b\u003e\u003cbr\u003e\u003cb\u003e\u003c\/b\u003e115 to 230 VAC, 50 \/ 60 Hz\u003cb\u003e\u003c\/b\u003e\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003ePower Consumption\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e18 W\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n       \u003c\/tbody\u003e\n      \u003c\/table\u003e\n     \u003c\/div\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       Physical\n      \u003c\/div\u003e\n      \u003ctable\u003e\n       \u003ctbody\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eMounting\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003eFront: 4x Standard Rack Screw\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eColor\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003eBlack\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eMaterial of Construction\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003eMetal\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eDimensions\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e19 x 11.25 x 1.75\" \/ 48.3 x 28.57 x 4.45 cm (1 RU)\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eWeight\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e10 lb \/ 4.5 kg\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n       \u003c\/tbody\u003e\n      \u003c\/table\u003e\n     \u003c\/div\u003e\n     \u003cdiv\u003e\n      \u003cdiv\u003e\n       Packaging Info\n      \u003c\/div\u003e\n      \u003ctable\u003e\n       \u003ctbody\u003e\n        \u003ctr\u003e\n         \u003ctd\u003ePackage Weight\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e13.47 lb\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n         \u003ctd\u003eBox Dimensions (LxWxH)\u003c\/td\u003e\n         \u003ctd\u003e\n          \u003cdiv\u003e\n           \u003cspan\u003e23.1 x 16 x 6.6\"\u003c\/span\u003e\n          \u003c\/div\u003e\n\u003c\/td\u003e\n        \u003c\/tr\u003e\n       \u003c\/tbody\u003e\n      \u003c\/table\u003e\n     \u003c\/div\u003e\n    \u003c\/div\u003e\n   \u003c\/div\u003e\n  \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e\u003cbr\u003eAll product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.","brand":"API AUDIO-10","offers":[{"title":"Default Title","offer_id":41974151610453,"sku":"AP5500:AP5500:bhpv","price":535970.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1034\/1611\/files\/1751542435_1904699.jpg?v=1765917248","url":"https:\/\/www.tanotis.com\/products\/api-audio-5500-dual-equalizer-2-channel-eq","provider":"Tanotis","version":"1.0","type":"link"}