$959.00
or pay $159.83/month for 6 months* with the Providence Synchrony Card
We’ll match competitor 0% financing offers —
and accept most Synchrony cards.
This API 550b has been fully tested by our expert team and comes with a money back guarantee and lifetime support. We have multiple units from the same production run if you would like a pair.
The API 550b is a four-band 500 Series equalizer descended directly from the original 1967 API 550 one of the most influential EQ designs in recording history. Built around the legendary 2520 op-amp and taken from API’s original archive drawings, it offers four overlapping bands with seven switchable frequency centers per band, each chosen for musical usefulness rather than round numbers. The key to its character is Proportional-Q: bandwidth narrows automatically with larger boosts and cuts for precise, focused shaping, and widens with subtle moves for broad, natural-sounding strokes all without an extra knob. The result is an EQ that’s equally at home solving problems and sweetening a mix, with the punchy, forward tone that has appeared on countless records across every genre.
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Here’s what you can expect with every purchase:
Enjoy an additional year of warranty on all new items. We're so confident in the quality of our products that we go the extra mile to ensure your peace of mind.
Our used items undergo rigorous testing and servicing to guarantee their performance. Plus, they come with a money-back guarantee, so you can shop with confidence.
Not completely satisfied? No worries! We offer a 7-day money-back guarantee on preowned items and a 14-day money-back guarantee on new items.
Whether it's warranty support, part replacements, tune-ups, or trade-ins, we're here for the long haul - count on us to assist you for as long as you own the product.
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WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm.Â
For more information go to www.P65Warnings.ca.gov.
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Interested in this piece of gear? Due to the complexity of this product you’ll need to place an order with one of our Audio Consultants. Fill out the form below and we’ll reach out to you to get an order started with the manufacturer.
