You are currently blocking all Cookies, the website requires Cookies in order to operate correctly, please enable them before proceeding.

FREE UK Shipping on orders over £99

1-hour Delivery Window on most UK orders

We Ship Internationally via

API 550A Special Edition

Special Edition 500 Series 3-Band Equaliser Module

£1,295.00 (Inc VAT)

£1,079.17 (Ex VAT). Shipping calculated at checkout.

Features •3 bands of classic API equalization •Each band offers 7 API selected frequency centers •Reciprocal and repeatable filtering •Maximum 12 dB of boost/cut per band •EQ Band 1 and 3 offer shelf/peak switching •"Proportional Q" narrows filter Q at extremes •Traditional...

Backorder, Available To Order

For more accurate delivery times, please click here.

Product Information
Shipping & Returns

Features
•3 bands of classic API equalization
•Each band offers 7 API selected frequency centers
•Reciprocal and repeatable filtering
•Maximum 12 dB 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 +30 dB clip level

Few equalizers enjoy the respect and admiration of the coveted API 550A. Designed by the now-legendary Saul Walker in the late `60s, the discrete 550A was first used as a modular OEM equalizer. As the industry rapidly embraced the sonic quality of the 550A, it quickly found its way into many custom console designs by Frank DeMedio and other leading engineers. Many of these consoles are still in use today.

Forty years later, the 550A remains the standard against which other EQs are measured, and it has played a major role in the recording industry for decades. Still copied but never duplicated, the 550A became API`s standard channel module EQ when the company began manufacturing consoles in 1971. With virtually all existing units spoken for, popular demand for this EQ resulted in API finally resuming production in 2004.

The 550A provides reciprocal equalization at 21 points in 5 steps of boost to a maximum of 12dB of gain at each point. The fifteen equalization points are divided into three overlapping ranges. The high and low frequency ranges are individually selectable as either peaking or shelving, and a band-pass filter may be inserted independently of all other selected equalization settings. Frequency ranges and boost/cut are selected by three dual-concentric switches, and a pushbutton "in" switch allows the EQ to be silently introduced to the signal path. A small toggle switch is used to insert the band-pass filter into the 550A.

The combination of Walker`s incomparable 2520 op amp and his "Proportional Q" circuitry gives the 550A user an uncomplicated way to generate acoustically superior equalization.

With the long-awaited reissue of this unit, an EQ that has had such a part in the history of recording is continuing to make history in today`s music.

Shipping – For next day delivery you must order before 3.30pm

UK Mainland – Orders over £99 qualify for FREE standard shipping (1-3 working days) We also offer a range of chargeable express shipping options for next working day, pre 12pm, pre 10.30am, Saturday deliveries and deliveries on a specific date. Our main UK courier is DPD.

UK Non Mainland – Not eligible for free shipping. These areas include (but are not limited to) Isle of Man, Isle of Wight, Isles of Scilly, Jersey, Guernsey, Northern Ireland, Orkney, Scottish Highlands and Shetland. Shipping costs for these ares will be calculated at checkout.

International/Export – Delivery charges will be calculated at checkout. All orders that are in stock we aim to dispatch from our warehouse within 48 hours. We ship all orders outside of the UK, NI, Isle of Man, Channel Islands via Fedex. All prices and delivery charges are exclusive of VAT for export. The customer is responsible to pay for any additional duties and charges.

Need to return an item? No problem.

If you have an SX Pro account:
Login, go to your Order History find the invoice for the item you want to return, click on the invoice then select “Request a return”, then select the item and quantity you want to return. This will take you to the returns form, simply fill it in and wait for our response.

No account, or orders prior to 31/03/2021
Simply fill out the returns form on this page and wait for our response.

Read more on our returns page

API 550A Special Edition

Representative Example

Checkout with finance

Shipping – For next day delivery you must order before 3.30pm

Need to return an item? No problem.

API 550A Special Edition

Get notified by email when this product becomes available

Representative Example

Checkout with finance

Shipping – For next day delivery you must order before 3.30pm

Need to return an item? No problem.