Export Settings for Mixing: Sample Rate Bit Depth and Format
The safest export settings for sending a song to a mixing engineer are WAV files, the same sample rate as the session, 24-bit or 32-bit float when available, no MP3 conversion, no clipping, no master limiter, and all stems starting from the same point. Do not change sample rate or bit depth just because higher numbers look better. Clean, aligned, unprocessed files are more useful than oversized files with preventable problems.
Export settings matter because they decide what the engineer can actually work with. If the files are clipped, misaligned, converted to MP3, bounced with master processing, or exported at random sample rates, the mix starts with avoidable cleanup. If the files are simple and consistent, the engineer can spend more time improving the song instead of repairing the handoff.
This guide explains sample rate, bit depth, file format, stereo versus mono, stems, rough mixes, dry and wet vocals, dithering, and a final pass-fail checklist. It is written for artists and producers exporting files from a DAW for professional mixing, online mixing, or a remote collaboration.
The Short Answer: Send Clean WAV Files at the Session Settings
If you are not given special instructions, export WAV files at the same sample rate you recorded in and at 24-bit or 32-bit float if your DAW supports it. Make every stem start at the same timestamp or bar 1. Leave headroom. Turn off master limiting unless the engineer specifically asks for a processed reference. Include a rough mix so the engineer understands your intended balance.
| Setting | Best default for mixing handoff | Why it helps |
|---|---|---|
| Format | WAV | High-quality, widely supported, no lossy compression |
| Sample rate | Same as session | Avoids unnecessary conversion |
| Bit depth | 24-bit or 32-bit float | Preserves headroom and resolution for mixing |
| Stems | All start at the same point | Prevents alignment problems |
| Master effects | Off for stems, optional on rough mix | Gives the engineer clean control |
If you are exporting from BandLab specifically, use the BandLab stem export guide. This article focuses on the broader settings that apply across DAWs.
Use WAV, Not MP3, for Mix Files
WAV is the safest format for professional mixing handoff because it is uncompressed and widely accepted by DAWs. MP3 is a delivery or reference format, not a clean mixing source. MP3 throws away audio data to reduce file size. That can create artifacts, soften transients, smear high end, and make processing less reliable.
AIFF can also be acceptable if your engineer asks for it, but WAV is usually the simplest default. Sweetwater's Pro Tools export guide lists WAV, AIFF, and MP3 as available export choices in that DAW, but for sending a song out to be mixed, WAV is the practical choice unless the engineer gives different specs.
Use MP3 only for quick listening references, not for stems. A rough MP3 is fine if you also send clean WAV stems. An MP3-only handoff limits what the engineer can do.
Keep the Session Sample Rate
Sample rate is how many times per second audio is captured. Common music sessions are often 44.1 kHz or 48 kHz, though some producers work higher. The best export setting for mixing is usually the sample rate the project was recorded in. If the session is 48 kHz, export 48 kHz. If the session is 44.1 kHz, export 44.1 kHz.
Do not upsample from 44.1 kHz to 96 kHz just to make the file look more professional. It does not add missing quality. It only creates larger files and possible conversion issues. Do not downsample before mixing unless the engineer specifically asks. Keep the files consistent.
Use this rule:
- Recorded at 44.1 kHz: export 44.1 kHz.
- Recorded at 48 kHz: export 48 kHz.
- Recorded at 88.2 or 96 kHz: ask the engineer if they want native rate or a lower rate.
- Working with video: 48 kHz is common, but follow the project spec.
The engineer can advise if conversion is needed later. Your job is to avoid unnecessary conversion before the mix begins.
Choose 24-Bit or 32-Bit Float When Available
Bit depth affects dynamic range and how safely the file can carry level detail. For mixing handoff, 24-bit WAV is a common professional choice. If your DAW supports 32-bit float export and the engineer accepts it, that can also be useful because it preserves more headroom if a file accidentally goes above normal limits. But 24-bit is still a strong and widely compatible default.
Do not send 16-bit files for mixing unless there is no better option. Sixteen-bit can be fine for certain final delivery formats, but mixing is not final delivery. The engineer benefits from cleaner working files.
Use this bit-depth decision:
| Bit depth | Use for mixing handoff? | Notes |
|---|---|---|
| 16-bit | Only if unavoidable | More common for final consumer delivery than mix prep |
| 24-bit | Yes | Good default for stems and full-quality exports |
| 32-bit float | Yes, if accepted | Useful for headroom and internal DAW exports |
If your engineer asks for a specific bit depth, follow that. Otherwise, 24-bit WAV at the session sample rate is a safe target.
Do Not Dither Stems for Mixing
Dither is usually a final-stage process used when reducing bit depth for a final delivery file, such as moving to 16-bit. It is not something you normally apply to every stem before sending files to a mixing engineer. iZotope's dithering guidance emphasizes that dither belongs at the final conversion stage and that processing after dither can undermine its purpose.
For mix handoff, avoid dithering unless your engineer specifically asks. Send clean high-resolution files instead. The final mastering or delivery process can handle final bit-depth conversion when needed.
A simple rule:
- Stems for mixing: no dither.
- Rough mix reference: no need to dither unless creating a specific final format.
- Final master to 16-bit: dither may be used at the very end.
Turn Off Master Limiting on Stems
Master bus limiting can be useful for a rough mix reference, but it should not be printed onto individual stems unless the effect is part of the sound and the engineer asks for it. A limiter on the master can change balances, flatten drums, hide clipping, and make the files harder to mix.
When exporting stems, turn off:
- Master limiter.
- Clipper on the master bus.
- Loudness maximizer.
- Heavy master compression.
- Final mastering chain.
There is an exception: if the rough mix has a creative master effect that defines the vibe, export a rough reference with that effect on, then send clean stems without it. That way the engineer hears your intention but still has control.
Leave Headroom Without Making Files Too Quiet
Headroom means the file has space before clipping. You do not need to export stems at a tiny level. You just need to avoid clipping and avoid printing files slammed into a limiter. Peaks somewhere below clipping are fine. The exact number matters less than clean audio with no red-line distortion.
Good export behavior:
- No channel clipping.
- No master clipping.
- No forced normalization unless requested.
- No unnecessary gain boosts during export.
- Files are loud enough to inspect but not damaged.
If the vocal or beat is already clipped before export, lowering the export volume will not fix the distortion. You need an unclipped source or an alternate take when possible.
Export All Stems From the Same Start Point
Alignment is one of the most important parts of file delivery. Every stem should start from the same point, usually the beginning of the song or bar 1, even if that track does not play until later. If you trim each file to only the region where audio begins, the engineer has to manually line everything up.
Correct alignment:
- Lead vocal starts at bar 1, even if the first vocal enters at 0:18.
- Ad-libs start at bar 1, even if they only happen in the hook.
- Beat stems start at the same point.
- Effects prints start at the same point as the dry tracks.
- The rough mix starts at the same point for comparison.
If you are unsure what to send, the stem delivery guide covers file types, rough mixes, alternates, and organization in more detail.
Send Dry and Wet Versions When Effects Matter
Vocals often need both dry and wet exports. The dry file gives the engineer control. The wet file shows the creative direction. This is important when the effect is part of the performance, such as a tuned sound, distortion, telephone filter, special delay, or vocal chop.
Use clear labels:
- LeadVocal_Dry.wav
- LeadVocal_WetReference.wav
- HookDouble_Dry.wav
- HookDouble_WetEffect.wav
- AdlibDelay_Print.wav
Do not assume the engineer knows which effects are intentional. If a wet vocal is only a reference, label it that way. If an effect must stay, write that in your notes.
Mono or Stereo Stems?
Export mono sources as mono when possible and stereo sources as stereo. A single lead vocal is usually mono. A stereo synth pad is stereo. A stereo beat is stereo. A reverb return is stereo. Sending everything as stereo can create larger files and clutter, but it is not always a disaster. The bigger issue is preserving the source correctly.
| Source | Export type | Reason |
|---|---|---|
| Lead vocal | Mono | Single mic source usually lives in the center |
| Rap ad-lib | Mono unless printed with stereo effects | Lets the engineer place it in the mix |
| Instrumental two-track | Stereo | Preserves the beat's existing width |
| Reverb or delay print | Stereo | Preserves the spatial effect |
| Synth pad or keys | Stereo if recorded that way | Preserves movement and spread |
If your DAW makes mono/stereo export confusing, consistency matters more than perfection. Tell the engineer what you exported and include the rough mix.
Include a Rough Mix Reference
A rough mix tells the engineer what you were hearing before the handoff. It does not need to be perfect. It should show vocal level ideas, effects taste, drops, mutes, ad-lib placement, and any creative balance that matters to you.
Send at least one rough mix:
- RoughMix_WithEffects.wav or MP3 for quick listening.
- RoughMix_NoMasterLimiter.wav if the limited version is misleading.
- Any special reference version if the vocal effect is important.
The rough mix can be processed. The stems should be clean. That combination gives the engineer intention and flexibility.
Use Clear File Names
Export settings are not only numbers. File names are part of the handoff. If the engineer receives Audio 1, Audio 2, VoxFinalFinal2, and Track_47, setup takes longer and mistakes become easier. Clear file names speed up the mix.
Use names like:
- LeadVocal_Main.wav
- LeadVocal_Double_L.wav
- LeadVocal_Double_R.wav
- Hook_Adlibs.wav
- Beat_2Track.wav
- Kick.wav
- 808.wav
- RoughMix_ArtistReference.wav
If the engineer needs notes to understand your files, include those notes. A strong mix brief can prevent file confusion before the mix starts.
Do a Pass-Fail Export Check
Before sending files, import the exports into a blank session or at least listen outside the original DAW. This catches problems that are easy to miss when you assume the export worked.
| Check | Pass | Fail |
|---|---|---|
| Files align | All stems start together | Vocals or beat parts enter late because files were trimmed |
| Audio quality | WAV, correct rate, clean level | MP3 stems, clipping, random conversion |
| Master processing | Clean stems, rough mix separate | Limiter printed on every stem by mistake |
| Effects | Dry and wet versions labeled | Engineer cannot tell what is intentional |
| Notes | Clear brief and references included | Files arrive with no context |
If the vocals were recorded at home, prepare the home-recorded vocals before export so the engineer receives cleaner source material.
When to Ask the Engineer First
If you are not sure, ask before exporting a huge folder. Some engineers prefer 24-bit. Some accept 32-bit float. Some want dry vocals and wet references. Some want beat stems. Some only need a two-track instrumental and vocals for certain services. Asking first prevents re-exporting later.
Ask these questions:
- Do you prefer 24-bit or 32-bit float WAV?
- Should I export at the session sample rate?
- Do you want dry vocals, wet vocals, or both?
- Do you need beat stems or only the instrumental?
- Should all files start at bar 1?
- Do you want the rough mix with or without master processing?
For a full-service handoff, BCHILL MIX mixing services can work from organized stems, rough references, and clear notes so the mix starts with the right materials.
Common Export Mistakes That Slow the Mix Down
Most export problems are preventable. They happen because the producer assumes the DAW export will automatically match the session or because the artist sends the first bounce that sounds loud enough. Take a few minutes to check the files before sending them. That small step can save a full revision round.
Common mistakes include:
- Sending MP3 stems instead of WAV stems.
- Exporting some files at 44.1 kHz and others at 48 kHz.
- Normalizing every stem during export.
- Leaving a limiter on the master while printing stems.
- Trimming each stem to a different start point.
- Forgetting the rough mix that shows the intended balance.
- Sending wet vocals only when dry vocals are needed for control.
- Labeling files with default names that do not describe the source.
None of these mistakes mean the song is ruined. They just make the engineer spend time sorting out the handoff before the creative mix can begin.
Make a Clean Folder Structure
A good export folder is easy to understand without a phone call. Put the files in a clear folder, include notes, and avoid mixing old exports with final exports. If there are alternates, label them. If a file is only a reference, label it as a reference.
A simple structure:
- 01_Rough_Mix
- 02_Dry_Vocals
- 03_Wet_Vocal_References
- 04_Beat_Stems
- 05_Instrumental_or_TwoTrack
- 06_Notes_and_References
You do not need to overcomplicate this. The point is that the engineer can open the folder and immediately understand what is clean source audio, what is a reference, and what should guide the mix.
Use the Same Export Range for Every File
Even when all files start at the same time, they should also cover the right full song range. If the rough mix includes a two-bar intro but the vocal stems start at the first lyric, the engineer has to realign. If the reverb print cuts off before the tail ends, the transition may feel unnatural. Export the full song length, including tails that matter.
Before export, set the range from the same start point to the same end point. Let reverb and delay tails finish when they are part of the sound. Do not cut files aggressively just to make the folder smaller. Storage is easier to deal with than missing audio.
Check the Files Outside the Original Session
The best export check is simple: create a blank session, drag the files in, and press play. If the rough mix and stems line up, the main export is probably usable. If the song falls apart, fix the export before sending it. This check catches alignment, missing audio, wrong sample rate, clipped files, and accidental effects faster than reading the export menu again.
If you do not want to build a blank session, at least listen to the files in a media player and inspect the folder names. Make sure nothing is silent, missing, distorted, or clearly mislabeled. Do not make the engineer be the first person to discover the export failed.
This check is worth doing even when you are in a rush. A five-minute export review can prevent a full day of back-and-forth, especially when the session includes many vocal layers, beat stems, printed effects, or alternate takes. Clean delivery makes the mix feel professional before the first plugin is touched.
It also protects your own release schedule. If the engineer has to stop and ask for corrected files, the turnaround clock becomes less predictable. Clean exports, clear labels, and a rough reference make it much easier for the first mix to come back close to the target.
Frequently Asked Questions
Should I export stems as WAV or MP3 for mixing?
Export stems as WAV. MP3 is fine for quick references, but it is not the right format for professional mix files because it uses lossy compression.
What sample rate should I use when exporting for mixing?
Use the same sample rate as the recording session unless the engineer asks for something else. Do not upsample just to make the number higher.
Is 24-bit enough for mixing?
Yes. Twenty-four-bit WAV is a strong default for mixing handoff. Thirty-two-bit float can also work if your DAW supports it and the engineer accepts it.
Should I dither files before sending them to a mixer?
Usually no. Dither is typically saved for final bit-depth reduction, not for stems that will still be mixed and processed.
Should my stems start at the beginning of the song?
Yes. Export every stem from the same start point, even if that part enters later. This keeps all files aligned when the engineer imports them.
Should I remove all effects before exporting vocals?
Send dry vocals for control and wet references when effects are part of the vibe. If an effect must stay, label the file clearly and mention it in your notes.
Final Check
Good export settings are boring in the best way. WAV files. Session sample rate. 24-bit or 32-bit float. No MP3 stems. No clipping. No unnecessary conversion. No master limiter on clean stems. Everything starts together. Dry and wet files are labeled. A rough mix and notes are included. When the handoff is that clean, the engineer can focus on the song instead of fixing the export.
