Vintage sound and vintage looks, this compressor is a program dependent valve compressor made popular in the 1950's and 60's. We dream about compressors like this. The Retro Sta-Level is a replica of the legendary 1956 Gates Sta-Level. The Sta-Level dominated the sound of hit radio in the 1960's. Now these super musical sounding compressors have found their way into today's hits. The Retro Gold Edition celebrates fifty years of the products existence.