Mono = one channel. Stereo = left and right. Most releases are stereo, but many elements inside the mix should behave well when collapsed to mono — phones and clubs still sum low end and center content.
Mono vs stereo in practice
| Use mono for | Use stereo for |
|---|---|
| Kick, bass, lead vocal (usually) | Pads, wide synths, room reverbs |
| Anything that must stay centered | Hard-panned guitars, wide FX |
| Sub and low fundamentals | Decorative width |
Why mono still matters
Playback systems and codecs may sum channels. Out-of-phase wide bass or vocals can disappear or change tone in mono.
→ Why your mix doesn’t translate
Stems: mono or stereo exports?
- Kick, bass, vocal lead: often mono files (or dual-mono)
- Drum overheads, rooms, synths: stereo
- Label clearly in filenames
Stereo bounce for mastering
Mastering receives one stereo WAV — not mono, unless releasing mono-only content intentionally.
Common mistakes
- Stereo widening on bass → weak low end in mono
- Doubles panned wide with phase issues → hollow vocal
- Exporting “stereo” that is identical L/R duplication without need
Check your mix
Use your DAW mono button on the master. Vocal and kick/bass should remain strong.