The pet-project that is the repair and restoration of classic Gates STA-Level limiters quickly turned into a full-time hobby, and then, a full-time job for Phil Moore of Retro Instruments. His encyclopedic know-how of these classic tube monsters folded over into a thriving business of manufacturing reissues and re-thinkings of vintage vacuum tube gear, giving the modern studio a worthy alternative to 60-year-old boxes.