Stereo Field & Mono Compatibility
Drag instrument widths on a stereo field display with live phase correlation and mono collapse risk per platform.
Side = (L − R) / 2 — carries stereo-only content. This disappears on mono systems. High side content = big stereo image that collapses to nothing in mono.
SPAN (Voxengo) — spectrum + correlation meter. Free and accurate.
Ozone Imager 2 — stereo width with frequency-dependent control
Brainworx bx_digital V3 — M/S EQ and width control per band
About the Stereo Field & Mono Compatibility
The Stereo Field & Mono Compatibility is a free interactive tool for music producers who want accurate answers fast. Whether you're searching for stereo field checker mixing, mono compatibility test online, phase correlation by instrument, this tool gives you real-time results without leaving your browser — and explains the reasoning behind every value so you know what to do with it.
Every tool on MusicProductionWiki is built around one principle: answer the question and explain the reasoning. The Stereo Field & Mono Compatibility not only calculates — it shows you why those values work, what changes when you adjust them, and what professional producers do differently across genres.
This tool is part of the Frequency & EQ category. It's embedded directly inside the relevant entries in The Producer's Bible — MPW's comprehensive reference library — where it appears in context alongside the theory that explains why each setting works the way it does.
All tools on MusicProductionWiki are free, require no login, and work in any modern browser on desktop or mobile.
Frequently Asked Questions
What should be in the center of a stereo mix?
Kick, snare, bass, and lead vocal are typically center-panned for maximum punch and mono compatibility. These elements carry the most energy and need to translate on mono systems (phones, mono Bluetooth, club systems). Wide stereo elements — pads, guitars, backing vocals, effects — fill the sides.
How do I check if my mix is mono compatible?
Fold your mix to mono in your DAW and listen carefully. Elements that disappear or sound hollow are experiencing phase cancellation — their left and right channels are out of phase and cancel when summed. The main culprits are wide stereo effects, parallel-processed tracks, and M/S-processed elements with heavy side content.
What platform listens in mono most often?
iPhone speakers, most Bluetooth speakers, smart speakers (Alexa, HomePod mini), and many TV speakers all output mono or near-mono. Approximately 30% of Spotify streams happen on mono-output devices. A mix that sounds great in stereo but loses the bass in mono will disappoint a large portion of listeners.