API 550B Discrete 4 Band EQ for 500 Series

API 550B Discrete 4 Band EQ for 500 Series

Marsoni

M251S

$1100.00

Get it in 3 business days with 1 day shipping. Friday, May 29

API 550B Discrete 4 Band EQ for 500 SeriesBased on the API 550 EQ from the late '60s the 550b is an update to the classic EQ that played a major role in the history of music recording but adds an 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 artfully blends the past with the present. So many hit records still depend on the unique 550 sound that engineers around the world

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Reviewed in the United States on January 23, 2026

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Ruben

Pawtucket, US

★★★★★ 5

Great alternative to OEM model

Works great for my car. Really didn’t see a difference between these ones and the OEM ones. It provides good value with easy installation.

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Reviewed in the United States on April 5, 2026

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George

Natrona Heights, US

★★★★★ 5

Good fit and price for a 2017 Honda Civic

Been using these in my Honda Civic for a while now they work great no complaints

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Reviewed in the United States on April 3, 2026

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Zander

Lake Worth, US

★★★★★ 5

pretty good for price!

Great item with easy install, drops right in for a perfect fit! the quality is up there for its money, but certainly isn’t going to be your top of the line. however it gets the job done and has a prettt decent air flow for its price!

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Reviewed in the United States on August 13, 2025

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Lowell, US

★★★★★ 4

As expected

Fits perfectly and last long

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Reviewed in the United States on February 15, 2026