Baby Audio I Heart NYI Heart NY Punchy parallel compressor. Audio plugin for Mac and PC. Parallel powers in a plugin. New York compression or parallel compression is a technique where you send your audio to a separate bus, crush it to death with expensive hardware, then blend it in with your dry track for a sound that is both powerful and dynamic. The technique was made popular in New Yorks production circles in the 1990s when million dollar studios were readily available