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musical instrument details

API 550b 4 Band EQ 500 Series RARE Horizontal Module - Sounds Great A++

Estimated price for orientation: 975 $

Category: Signal Processors or Rack Effect
Class:











Description
Type: Equalizer Frequency Bands: 4
Brand: API Audio Form Factor: Modular
MPN: Does Not Apply Effect/Enhancement: Graphic Equalization
Number of Channels: 1 Inputs/Outputs: 500 Series
Model: 550b Country/Region of Manufacture: United States
UPC: Does not apply


Module is in excellent condition with some light wear due to normal use.  The module pictured is the one you will be receiving.  Incorporating API's legendary circuitry, the API 550b 4-band equalizer exudes that royal API blood line in every ounce of its sonic character. Artfully blending the past with the present, the API 550b carries the torch from the now-classic API 550EQ — delivering just the right amount of controls to solve problems and sweeten the sound. On each of the API 550b's bands, there are seven carefully selected, switchable filter frequencies. It's packed with surprisingly surgical capabilities — but it's all about musicality — you'll find out why top engineers depend on the API 550b everyday.
API 550b 500 Series Modular 4-band Equalizer at a Glance:A modern relative of a music-history favoriteAPI's "Proportional-Q" ControlExcellent at affecting or reversing tonal modificationsAPI's 500 Series: Long-term flexibility, lasting valueA modern relative of a music-history favoriteThe API 550 EQ played a major part in the history of music recording in the USA during the 60s and 70s. Originally conceived for use in API's consoles, this latest 550"B" version, the API 550b, is a continuation of the original 1967 550 through the 550A with one additional filter band and several new frequencies. Incorporating API's exclusive circuitry and proprietary components (such as the legendary API 2520 op-amp), the 550b blends the past with the present. So many hit records still depend on the unique 550 sound — and you'll find that the 550b will be an invaluable tool you'll turn to again and again.API's "Proportional-Q" ControlMaking use of "API Proportional-Q", a design introduced by API in the 60s, the 550b intuitively widens the filter bandwidth at minimal settings and narrows it at higher settings — without the need for additional bandwidth controls. This feature minimizes the "phase-shift" sound found in many equalizers.Excellent at affecting or reversing tonal modificationsYou'll be surprised by the possibilities the API 550b 4-band equalizer opens up. One of the 550b's most compelling features is its ability to affect or reverse tonal modifications. If major tonal restructuring is required, the extraordinary headroom made possible with API's 2520 op-amp offers predictable and gentle "analog" performance under duress. You've got a surprisingly wide range of tonal variations, just a few knobs away.API's 500 Series: Long-term flexibility, lasting valueThe beauty of the entire API 500 Series is its long-term flexibility and lasting value — especially when you consider that needs change over time. With a range of mounting frame options, the API 550b will be a valuable asset to your ever-changing studio rigs. It's also ruggedly designed with sound you just won't outgrow — crafted to be your sonic partner for year after year.API 550b 500 Series Modular 4-band Equalizer Features:4 bands of their famous-sounding equalizationEach band offers 7 API-selected frequency centersReciprocal and repeatable filtering12dB of boost/cut per bandEQ Band 1 and 4 offer shelf/peak switching"Proportional Q" narrows filter Q at extremesTraditional API fully discrete circuit designHigh-headroom +30dB clip levelReissue of 1967 API 550 EQ with an extra bandAPI 550B 500 Series Modular 4-band Equalizer Specifications:Modular 4-band EqualizerFilter Type:"Low" and "High" bands are Peak/Shelf switchable. Low-Mid and Mid-High are peaking typeLow Filter Frequency Center: 30, 40, 50, 100, 200, 300, 400HzLow-Mid Filter Frequency Center: 75, 150, 180, 240, 500, 700, 1KhzMid-High Filter Frequency Center: 800, 1.5K, 3K, 5K, 8K, 10K, 12.5KHigh Filter Frequency Center: 2.5K, 5K, 7K, 10K, 12.5K, 15K, 20KFilter Boost/Cut: +/- 12dBFilter Slope: 12dB per OctaveInput Impedance: 18.5 K +4 in, 7.5 K -2 inOutput Impedance:Less than 75 OhmsNominal Levels: -15 to +15 dBuClipping Level: +30 dBu at +/-16 VFrequency Response:+0, -.3, 30 to 20 kHzNoise:Actual, unw noise, <-98 dBu, 20-20 kHzDistortion:.07% max, at +18 dBu OutputConnectors:15 position .156sp edge connectorSize: 1.5" X 5.25" X 6" DeepWeight: 2.5 lbsThe API 550b 4-band equalizer artfully blends classic API sound with modern features!
Item will be professionally packed, shipped and insured to guarantee safe arrivalThe item pictured is the one you will be receiving.No additional accessories included.Tone House Studios has new Gui