Rob Chiarelli is a Los Angeles–based Grammy-winning mix engineer and producer whose name appears on records by Will Smith, Christina Aguilera, Janet Jackson, Pink, Mary Mary, LeAnn Rimes, Ray Charles, and many others, along with film soundtracks including Men in Black II. The 'Rob Chiarelli' brand on the gear side is built around two ventures he is closely tied to: Final Mix Software, which sells his Signature Series mixing plugins, and Gauge Precision Instruments, the microphone company he co-founded with Chandler Bridges in 2008.

Through Final Mix Software, Chiarelli designs affordable, no-subscription plugins aimed at home and project studios. The Signature Series catalog includes the Mix Buss bus processor, the EQ9A mastering EQ, a tape emulation plugin, and a family of dedicated parallel compression tools — Parallel Vocals, Parallel Acoustic, Parallel Electric, and Parallel Drums — alongside utilities such as Track Notes for in-session note taking and the M1 Limiter Lite.

As co-founder of Gauge Precision Instruments, Chiarelli helped develop the ECM-87 large-diaphragm condenser and the multi-pattern ECM-47 tube microphone, products built around an ear-checked QC process intended to bring affordable mics up to a usable standard for professional sessions. His public persona blends engineer-credibility marketing with educational content, and his plugins are typically positioned as practical tools distilled from his own mix workflow.

Rob Chiarelli has 2 products cataloged on Equipboard, including Dynamic Processor Plugins.