Classic API Bus Compression for Your 500 Series Rack The API 529 borrows many of the features and controls from the company’s acclaimed 2500 bus compressor (a Sweetwater favorite) and packs them into a double-wide 500 Series module. This stereo unit features API’s patented Thrust circuitry for a punchy low end, along with a New/Old switch that lets you choose between vintage and modern compression characteristics. Old delivers classic feedback compression; New serves up today’s more prevalent feed-forward compression. The Auto makeup-gain button lets you adjust ratio and threshold without affecting your output level. Employing both 2510 and 2520 discrete op-amps, the 529 delivers legendary API analog sonics. It’s the sound that launched a thousand hits made-to-measure for the popular 500 Series format.This compressor’s all about versatility and musicality When you choose API, you know you’re getting amazing sonic character. And with the API 529, you’ve got a wide