Vintage 1970s API 553 500 Series Signal Processor

Vintage 1970s API 553 500 Series Signal Processor Highly sought-after vintage API 553 500 Series signal processor from the 1970s. This three-band discrete EQ features fixed low, mid and high-frequency points with up to 15dB of boost or cut, delivering the punch, presence and musical character that made early API equipment a studio favorite. The 553 represents the early generation of API's groundbreaking 500 Series, a modular format pioneered by API in 1969 and still ubiquitous in professional recording today. Its discrete circuitry, 2520 op-amp and transformer-coupled output make it a genuine piece of classic American recording history. A fantastic opportunity for engineers, producers and collectors looking for an authentic piece of early API studio gear with plenty of character. Please see photos for cosmetic condition and details. This exceptional piece has been personally curated and inspected by Brandon Meunier, a Guitar Center specialist with a primary focus on high-end and vintage guitar amplifiers, instruments and gear, along with extensive experience across professional audio and other specialized departments. In addition to Brandon's evaluation, this item has been reviewed by members of Guitar Center's most experienced vintage, used and high-end personnel.