API 550A 3 Band EQ - Saul Walker Edition

2,781.00 (including VAT @ 23%)

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Estimated delivery to you: 19th December 2016
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30 day money back guarantee included

30 day money back guarantee included

Once the product is delivered, you have 30 days to decide that you definitely want to keep it. If you decide it is not suitable for any reason, you can return it back to us for replacement or full refund, including standard delivery charges.

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Optional: 3 year warranty: €139.00
(Includes 60 day money back guarantee)


The product price includes a one year warranty and 30 day money back guarantee.

However, the Gear4music extended warranty scheme provides an enhanced service, and is designed to offer a higher level of protection than many 'free' warranties offered by some retailers and manufacturers.

The highlights of this enhanced warranty service are:

  • Warranty is extended to 3 years from the date of delivery.
  • Our Money Back guarantee is extended from 30 days to 60 days (terms apply after 30 days)
  • Collection and delivery costs are included for the first two years
  • Claim 50% cash back on the cost of the policy after 3 years if it has not been used!
  • Warranty is transferable if the item is re-sold
  • Loan or replacement equipment will be provided if the product isn't repaired within 30 days
  • If an item can not be repaired, a similar alternative product or cash discount (as defined in this policy) will be offered
  • The policy can be cancelled within 30 days, and at any time after that for a pro-rata discount

Please note that this extended warranty is currently only available on products sold within the EU or EEA, and is subject to the terms and conditions as detailed on the extended warranty certificate provided.

For customers in outlying areas of the country, the price of the Extended Warranty may be marginally higher, due to the potential for higher collection and redelivery transport costs.

This enhanced warranty is in addition to the standard Gear4music and manufacturer warranty policies, and the Gear4music terms and conditions of trade. No statement or condition of sale contained within these terms affects or restricts your statutory rights as defined under the Consumer Contracts Regulation 2014.

Product Ref: 61728

  • Limited Edition Model
  • Custom Faceplate and Signature By Saul Walker
  • 7 API-Selected Frequency Centers
  • ''Proportional Q'' Circuitry
  • 2520 Op-Amplifier

API 550A 3 Band EQ - Saul Walker Edition

The API 550A Saul Walker Edition is a limited edition 3-band equalizer with a custom faceplate. This special edition of the 550A includes a special customized faceplate and features the signature of the designer himself:- Saul Walker. With all the original features from the 550A, this unit provides 3 bands of classic API equalization, with each band offering 7 API-selected frequency centers. The high headroom of +30dB clip level, provides extra versatility when it comes to affecting inputs. This special edition re-issue of the 550A provides everything you'd expect from a classic API EQ with the added aspect of being collectible, down to its customized design.

Product Ref: 61728

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Full Description

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''Proportional Q'' Control

Saul Walker (The founder of API) designed the ''Proportional Q'' control in the '60s, allowing for the widening of the filter bandwidth at minimal settings whilst narrowing it at higher settings, without the need for additional bandwidth controls. This feature helps to minimise the phase-shift sound found in many equalizer units.

Classic Re-Issue

The 550A was first developed and circulated in the late 60s, designed by API's founder, Saul Walker, the discrete 550A was used at first as a modular OEM equalizer. The sonic quality and functionality of the 550A was embraced the industry, finding its way into many custom console designs by many renowned engineers. In 2004, this unit was re-issued by popular demand. This customized version of the classic makes it a collectible for any fan of the API series with its custom faceplate and signed by Saul Walker himself.

The API 500 Series

The API 500 Series focuses on high sound quality and longevity at an affordable price range. Considering most studio rigs undergo a large amount of swapping and changing between equipment, the API 500 series is designed to last, from its high quality components down to its rugged and durable design.


  • Collectible: features API founder Saul Walker's signature plus a custom faceplate
  • A true classic, reintroduced in 2004 by popular demand
  • 3 bands of classic API equalization
  • Each band offers 5 API-selected frequency centers
  • Reciprocal and repeatable filtering
  • Maximum 12dB of boost/cut per band
  • EQ Band 1 and 3 offer shelf/peak switching
  • "Proportional Q" narrows filter Q at extremes
  • Traditional API fully discrete circuit design
  • High-headroom +30dB clip level
Your order may be delivered with a plug adapter
If any electrical items in your order are supplied with a United Kingdom plug connection, a suitable plug conversion adapter will be included free of charge.