Reducing the footprint of my studio and selling some gear. This is the Retro Instruments Sta-Level, Gold Edition. A current US-built version of the Gates Sta-Level. Vari-mu, tube. Single, double, and triple change the release and the ratio together. Single is tighter. Double is the everyday setting. Triple is the slow one. Smoke-free studio. Everything works. 120V. People still hunt the old Gates units for this sound.