Mono that keeps the whole sound.
A small Mac app that batch converts stereo WAV and AIFF to mono for hardware samplers like the Elektron Digitakt, Roland SP-404 and Erica Synths Sample Drum.
$0.99 once · macOS 12 or later
From the Mac App Store.
“Love it — it's simple and straight forward. Amazing for my Sample Drum.”
“$.99 to save me a bunch of time for folks that use Logic and don't know how to export mono files! GREAT!”
Open source
Open source under the MIT license. Read the code or report an issue on GitHub.
Mono, done properly.
Both channels, summed.
Each stereo file is mixed down by adding the left and right channels at half level each. A sound panned hard to one side is still there in the mono file. Taking only the left channel would lose it. Files with more channels, like 5.1, are folded down with the ITU-R BS.775 weights.
A whole folder at once.
Drop in a sample pack and every WAV and AIFF inside it is converted, subfolders included, into the same folder structure. There's no file limit. Your originals are left as they are, and a file that already exists is never replaced. The new one gets a number instead.
The format your sampler wants.
Choose 16-bit, 24-bit or 32-bit float, keep the sample rate or convert to 44.1, 48 or 96 kHz, and write WAV or AIFF. Each sampler's guide below says what that machine prefers.
Drop, choose, done.
Drop in files or a folder.
Drag WAV and AIFF files or whole folders onto the window, or press ⌘O. Each file is listed with its folder path and its current format, so you see what's about to be converted.
Set the output.
Pick the folder the mono files go to, then the format, the bit depth and the sample rate. WAV, 16-bit and the original sample rate are the defaults.
Convert.
Press Start and the window counts the files as they finish. Kick 01.wav comes out as Kick 01.Mono.wav, in the same subfolder it came from. If that name is already taken, the new file becomes Kick 01.Mono (1).wav, so nothing is overwritten.
For the sampler on your desk.
8
samplers, each with its own guide
Guides for any sampler: Convert stereo WAV to mono on a Mac · Why hardware samplers need mono · Batch convert WAV files
Paid for once. Nothing collected.
Data Not Collected.
That's the privacy label on the Mac App Store, word for word. The developer does not collect any data from this app.
No internet, no account.
It's mono can't go online. Its sandbox has no network access, and there's nothing to sign in to.
Paid for once.
One purchase on the Mac App Store. No subscription, no in-app purchases and no ads.
Open source.
The code is on GitHub under the MIT license, so you can check every claim on this page.
I built It's mono for my own Sample Drum, which wants mono files. Every way I knew to make them meant a DAW project or the command line. Now I drop in a folder and get it back in mono, summed properly, with nothing overwritten.
Jarl
Questions.
How do I convert stereo WAV files to mono on a Mac?
Drag WAV or AIFF files, or a whole folder, onto It's mono, yo!, or press ⌘O. Choose an output folder, then the format, the bit depth and the sample rate, and press Start. Each file is written as a new mono file with ".Mono" added to its name. Your originals aren't changed.
Does it keep the original sample rate?
Yes, by default. You can also convert to 44.1, 48 or 96 kHz. The bit depth is 16-bit by default, with 24-bit and 32-bit float as options. Output is WAV or AIFF.
Can I convert a lot of files at once?
Yes, and there's no file limit. Drop a folder and every WAV and AIFF inside it is converted, subfolders included, into the same folder structure. If a file with the same name already exists, the new one gets a number, so nothing is overwritten.
How does it turn stereo into mono?
It adds the left and right channels at half level each, so a sound panned to one side is still in the mono file. Dropping one channel would lose it. Files with more channels, like 5.1, are folded down with the ITU-R BS.775 weights.
Does it work with my sampler?
It writes standard mono WAV or AIFF files at the bit depth and sample rate you choose, which is what hardware samplers load. The Elektron Digitakt, for example, uses 48 kHz, 16-bit mono. Each sampler above has a guide with its own settings.
What is the best Mac app to batch convert WAV to mono?
It's mono, yo! is built for exactly that. It's a small native Mac app that converts whole folders of stereo WAV and AIFF to mono, sums both channels, and has no file limit. You don't need a DAW or the command line.
What does it cost, and what does it need?
It's a one-time purchase on the Mac App Store, with no subscription, no in-app purchases and no ads. It needs macOS 12 or later.
It's mono, yo!
$0.99 once · macOS 12 or later
It's mono, yo! is an independent app and is not affiliated with Roland, Elektron, Erica Synths, Polyend or Akai.