Zer0Tuner · any note to a tenth of a cent, and the shift to your song's key
The only tuner plugin you'll ever need to read the note of any sound, to a tenth of a cent.
See the note of any sound to a tenth of a cent, on a needle or a strobe. HOLD keeps the note a kick, a sub or a sample settles on, and KEY shows exactly how far to shift it to your song's key. Zer0 only listens: your sound passes through bit for bit, with zero latency.
- Use it on 5 computers per copy
- Lifetime updates
- 90-day money-back guarantee
- Download link in minutes
- VST3, AU and AAX, Windows and macOS
- Try it free
Formats and DAWs
Windows 10 and 11 (64-bit): VST3 and AAX
macOS 11 or later: VST3, AU and AAX
Works in any 64-bit DAW that loads VST3, AU or AAX plug-ins.
Licence
Use it on up to five of your own computers per copy you buy. Yours for good, no subscription. Unlock it with your email and a six-digit code, no dongle and no password. It checks in now and then and works offline in between.
Delivery
Download links by email within about five minutes, and always in your account under Downloads.
Zer0 in action
Zer0 in under a minute, the real plugin reading real, synthesised notes: the needle and the lake, the strobe, REF, KEY and MUTE. The sound never changes, so this video is the preview.
Why Zer0
The note it settles on
A deep sub kick does not start on its note: its pitch falls onto it and fades, and an ordinary needle chases the glide. HOLD waits until the pitch has settled and keeps that note on the display after the sound has gone: within 0.55 cent on synthesised test kicks, 1.3 cents hard-driven.
The shift to your key
Knowing the note is half the job. Set KEY to the song's key and Zer0 shows the shift to the nearest root, 3rd or 5th, in semitones and cents, ready to type into your sampler's transpose and fine tune.
Real notes only, your sound untouched
A second check on the sound's overtones refuses anything that is not clearly a note: white and pink noise showed a reading 0 % of the time in the tests. And the audio passes through bit for bit, with zero latency.
See the note. Tune to zero.
The note large, the frequency to a hundredth of a hertz and the cents to a tenth, with a needle that turns green within 2 cents.
- VST3 · AU · AAX
- Windows and macOS
- 0 latency
- 14 presets
The tuner plugin
- The note it settles on. HOLD waits until the pitch has settled and keeps that note on the display after the sound has gone.
- The shift to your key. KEY shows the shift to the nearest root, 3rd or 5th of your song's key, in semitones and cents, ready for your sampler.
- A tenth of a cent. A needle, a three-band strobe, and REF from 400 to 480 Hz for any ensemble's A.
- Real notes only, your sound untouched. Noise read 0 % of the time in the tests; bit-for-bit pass-through and zero latency.
- REF (400 to 480 Hz), HOLD, RANGE (GUITAR / VOICE, or the bass range down to 27.5 Hz), VIEW (NEEDLE, STROBE) and KEY (24 keys).
- The reading: the note, the frequency to 0.01 Hz and the cents to 0.1, green within 2 cents.
- MUTE for silent tuning, IN and OUT meters, and ENGAGE.
- 14 factory presets and your own preset files; A/B, undo and redo, MIDI Learn; a window from 75 to 200 %; the full manual.
HOLD · KEY
Hold the note. Shift it to the key.
HOLD keeps the note a kick or a sample settles on; KEY gives the shift to the nearest root, 3rd or 5th of your song's key, in semitones and cents.
What Zer0 does
Every control has one job: read the note you hear, and put it in your song's key.
The reading
Every number you need, at a glance
The note large with its number beside it (A4 is the A above middle C), the frequency to 0.01 Hz and the cents to 0.1, plus when sharp and minus when flat. Within 2 cents the cents and the needle turn green. The numbers refresh about eight times a second so they stay readable; a new note shows at once.
REF
Tune to any ensemble's A
The pitch of A4 every reading is measured against, from 400 to 480 Hz in 0.1 Hz steps: 440 Hz standard pitch, 415 for baroque pitch, 442 or 443 for many orchestras, 432 for tracks tuned there. A tone at REF reads A4 within 0.5 cent. A double-click puts it back to 440.
RANGE
Guitar and voice, or the deepest sub
GUITAR / VOICE (the default) reads from 58 Hz, a 7-string's low B, and answers fastest: a low E string in about 65 ms. BASS / 808 reads down to A0, 27.5 Hz, for sub bass, deep sub kicks and 5-string bass, and still reads the higher notes; an E1 takes about 0.13 s.
VIEW: NEEDLE
See how far off, and which way
A needle over 50 cents either side of the note, with a tick at every cent and a green zone 2 cents either side of zero. It glides to each reading over 100 ms instead of jumping with every small waver.
VIEW: STROBE
The finest tuning, a tenth of a cent
Three bands of stripes drift right when the note is sharp and left when it is flat, faster the further off, and stand still in tune. The lower bands move two and four times as fast, so the smallest error shows there first. Get the needle to zero, then tune until the bottom band stops.
HOLD
Read a sound that is already gone
Waits until the pitch has stopped gliding, never holds the glide, and keeps the middle of the settled readings: HELD, the note, the cents and the frequency, on the line under the reading. It stays after the sound has gone, until the next settled note replaces it.
KEY
The exact transpose for your sampler
Your song's key, from C MAJOR to B MINOR. The line under the reading shows the shift to the nearest root, 3rd or 5th of it, for example TO D#1 (3RD OF C MINOR): -2 ST +17.9 CT: transpose down 2 semitones, fine-tune up 17.9 cents. The nearest is always the smallest shift, which keeps the sample's character.
MUTE
Tune silently
Silences the output while you tune, with a 10 ms fade so there is no click; the display keeps reading and OUTPUT MUTED shows. Map it to a footswitch with MIDI Learn for silent tuning on stage.
ENGAGE
A bypass that never touches the sound
Your host's bypass. Off, the tuner rests and the display reads OFF. With MUTE off the audio is the same either way: Zer0 only listens, so there is no mix and no gain anywhere, on purpose.
Real notes only
No needle on hiss and drums
A second check on the sound's overtones confirms the register and refuses anything that is not clearly a note, so hiss, breath and most drums show "--". In the tests white and pink noise showed a reading 0 % of the time; drum loops at most 32 %, on their pitched kick bodies.
14 sourced presets
Start from the job at hand
Init for plug in and play; Guitar / Strobe and Silent Tune; Bass / 5-String and Strobe; three for deep sub kicks, among them 808 / To C Minor, which holds the note and gives the shift to C minor; Sample / Root Note and To C Minor; and A4 at 415, 442, 443 and 432 Hz. Only Silent Tune changes the audio, by muting it.
A lake at dawn
See in tune without reading
The reflection in the water ripples while the note is off, toward you when sharp and away when flat, growing as it moves further off, and goes mirror-still in tune. The sun on the water follows the output. In silence or with ENGAGE off the water is still.
Inside the plugin
The Zer0 window: a lake at dawn, a glass display with the note, and nothing that touches the sound.
Every feature
Everything in Zer0, down to the smallest switch.
42 features
The reading
-
Note, frequency and cents
The note with its number, the frequency to 0.01 Hz, the cents to 0.1, green within 2 cents
-
NEEDLE
50 cents either side, a green 2-cent zone, gliding over 100 ms
-
STROBE
Three bands at 1x, 2x and 4x speed that stand still in tune
-
REF
A4 from 400 to 480 Hz in 0.1 Hz steps; double-click for 440
-
RANGE
GUITAR / VOICE from 58 Hz, or the bass range down to A0, 27.5 Hz
-
Accurate in the tests
Median within 0.21 cent from 41 Hz to 1.3 kHz, at 44.1, 48 and 96 kHz
-
Real notes only
Noise read 0 % of the time in the tests; hiss and most drums show "--"
Kicks, subs and samples
-
HOLD
Keeps the note a sound settles on, after the sound has gone
-
Never the glide
Waits for the pitch to settle: within 0.55 cent on synthesised test kicks
-
KEY
24 keys: the shift to the nearest root, 3rd or 5th, in semitones and cents
-
Ready for your sampler
Semitones for its transpose, cents for its fine tune
Your sound, untouched
-
Bit for bit
At every setting and in every preset (tested)
-
Zero latency
0 samples at every setting: play and sing through it live
-
MUTE
Silences the output with a 10 ms fade while the display keeps reading
Workflow and control
-
A/B compare and A>B
Two complete settings, switch in one click
-
Undo and redo
Step back and forward, or press Ctrl+Z
-
MIDI Learn
Take complete control of your workflow: right-click any control, move a knob
-
Host automation
Automate every control from your DAW
-
ENGAGE
The host bypass: the display reads OFF; the audio passes untouched either way
-
IN and OUT meters
The level going in and coming out: the same, unless MUTE is on
-
Tooltips
Every control explains itself as you point at it
-
Resizable window
75 to 200 %, and the size you pick is remembered
-
A footswitch on MUTE
MIDI-learn MUTE for silent tuning on stage
Presets
-
14 factory presets
Each built from a documented setting; only Silent Tune changes the audio, by muting it
-
Previous and next arrows
Audition presets one click at a time
-
Save your own
Keep your settings as .tunerpreset preset files
-
Open presets folder
Back up or share your presets in one click
-
Reset to default
Back to a clean start in one step
Performance
-
Mono or stereo
On a guitar, a bass, a vocal, a sample's track or the input you record
-
CPU, as measured
The reading: about 0.85 % of one core at 44.1 or 48 kHz, about 1.6 % in the bass range
-
Window open
Adds 1.28 to 1.43 % of one core while a note moves, the needle at 15 frames a second
-
Window closed
The display costs nothing
-
Any session rate
Tested at 44.1, 48 and 96 kHz
-
A lake that follows the note
Ripples while the note is off, mirror-still in tune
Licence and compatibility
-
VST3 and AAX, Windows 7 SP1 or later
Loads in any 64-bit Windows DAW with VST3 or AAX
-
VST3, AU and AAX, macOS 10.13 or later
Loads in any Mac DAW with VST3, AU or AAX, Intel or ARM
-
5 computers per copy
Studio, laptop and more on one licence
-
Email and code unlock
No dongle, no password, no extra app
-
Works offline
No internet needed between check-ins
-
Check for updates
From the plugin's menu; nothing installs without asking
-
Lifetime updates
Every future update included
-
Platinum priority support
Questions answered by the people who build it
How Zer0 compares
The note a sound settles on, the shift to your key, no false readings, and your audio left exactly as it is.
| Zer0 | Typical tuner plugins | |
|---|---|---|
| Settling sounds | HOLD keeps the note a kick or a sample settles on | Often a needle chasing the glide |
| Your song's key | KEY: the shift to the nearest root, 3rd or 5th, in semitones and cents | Often the note only; the sum is yours |
| False readings | None on white or pink noise in the tests | Often a needle that flickers on hiss |
| Resolution | A tenth of a cent on screen, plus a three-band strobe | Often whole cents |
| Reference pitch | A4 from 400 to 480 Hz in 0.1 Hz steps | Often a few fixed choices |
| Your audio | Bit for bit, zero latency, at every setting | Often unstated |
| Try-and-compare | A/B, A>B, undo and redo | Often missing |
| Hardware control | MIDI Learn on every control | Often host automation only |
| Licence | 5 computers per copy, no dongle, works offline | Often fewer activations, or a dongle |
| Updates | Lifetime updates included | Often paid upgrades |
"Typical" describes what we commonly see in this category; it does not describe any particular product. Zer0 facts are from the plugin and its manual, October 2026.
What you get
Vox Samples
90-day money back · Thank you
Specs and system requirements
- Formats
- VST3 and AAX on Windows; VST3, AU and AAX on macOS
- Operating system
- Windows 7 SP1 or later, 64-bit; macOS 10.13 or later, universal (Intel and ARM)
- Host
- Any 64-bit DAW that loads VST3, AU or AAX plug-ins. No standalone app.
- Channels
- Mono or stereo (in = out); it reads the mono sum
- Sample rates
- Whatever your session runs at; tested at 44.1, 48 and 96 kHz. Above 50 kHz the copy it reads is filtered and brought down to 44.1 or 48 kHz
- Latency
- 0 samples at every setting; no tail
- Sound
- Passes through bit for bit at every setting and in every preset (tested). Only MUTE changes it, by silencing it with a 10 ms fade. A broken sample (NaN or infinity) from before it leaves as silence
- Reading range
- From A0 (27.5 Hz) in the bass range, or 58 Hz in GUITAR / VOICE, up to about 2.1 kHz (C7). One note at a time
- Accuracy
- In the tests, the median reading within 0.21 cent from 41 Hz to 1.3 kHz and within 0.07 cent from 27.5 to 41 Hz; reading-to-reading jitter at most 0.41 cent (95th percentile); the right note in the right register on 99 % of readings or more
- Speed
- First reading within 2 cents at 48 kHz: E2 65 ms, A2 77 ms, G3 44 ms; E1 129 ms in the bass range
- Display
- The note with its number, the frequency to 0.01 Hz and the cents to 0.1, green within 2 cents; a needle over ±50 cents gliding over 100 ms, or three strobe bands (1x, 2x, 4x)
- REF and KEY
- A4 from 400 to 480 Hz in 0.1 Hz steps (default 440). KEY OFF or 24 keys, C major to B minor; notes spelt with sharps
- CPU
- The reading about 0.85 % of one core at 44.1 or 48 kHz, about 1.6 % in the bass range with its two detectors; 1.1 % and 2.2 % at 96 kHz (upper bounds, measured with other builds running). The open window adds 1.28 to 1.43 % while a note moves, the needle at 15 frames a second, and less while it holds still; closed, nothing
- Presets
- 14 factory presets; your own as .tunerpreset files
- Manual
- https://voxsamples.com/zer0-tuner-manual
- Window
- 960 x 600 at 100 %, resizable from 75 to 200 %
- MIDI
- MIDI Learn from any controller routed to the track
- Licence
- 5 computers per copy you buy. Unlock with your email and a code we email you. Checks in now and then and works offline in between.
- Internet
- Needed once to unlock, then for the occasional check-in
90Day money-back guarantee
Our guarantee
-
90-day money-back guarantee
Not for you? Email contact@voxsamples.com within 90 days for a full refund.
-
5 computers per copy
Use it on up to five of your own computers per copy you buy, and move it yourself from the plugin's Licence menu.
-
Lifetime updates
Every future update and upgrade of Zer0, included.
-
Platinum priority support
A real person at contact@voxsamples.com, first in line.
Try Zer0 free
The whole plugin, with the same sound as the full version and no time limit. It goes silent for a moment every few seconds; the full version never does.
Windows and macOS installers in one download. Like what you hear? Get the full version on this page, with a 90-day money-back guarantee.
Questions
Does it change my sound?
No. The audio leaves exactly as it came in, at every setting and in every preset (tested bit for bit), with zero latency. Only MUTE changes it, by silencing it on purpose.
Can it read deep sub kicks and sub bass?
Yes. Set RANGE to its bass setting, which reads down to A0 (27.5 Hz), and turn HOLD on. It shows the note the sound settles on after its pitch fall, and keeps it after the sound has gone.
How do I put a kick or a sample in my song's key?
Set KEY to the key. The display shows the shift to the nearest root, 3rd or 5th, for example "-2 ST +17.9 CT": enter -2 semitones in your sampler's transpose and +17.9 cents in its fine tune, play it again and check that it reads 0 cents.
Why does my sample read a different note from its file name?
A sample is often named for the pitch it passes through at its loudest. HOLD reads where it settles, which is what you hear as its note.
Why does it show "--" on my drum loop?
On purpose: it shows a note only when there is one, so hiss, noise and most drums do not move the needle.
Can I tune to 432 or 442 Hz?
Yes: REF sets A4 anywhere from 400 to 480 Hz in 0.1 Hz steps; presets cover 415, 442, 443 and 432.
Can I tune silently on stage?
Yes: MUTE silences the output while the display keeps reading; MIDI-learn it to a footswitch, or load Guitar / Silent Tune.
Does it read chords?
No: it reads one note at a time. Play strings one by one.
Why are flats shown as sharps?
Every note is spelt with sharps, in every key, as chromatic tuners spell them: D# is E flat.
Why does a note that fades in slowly not read?
A tone that swells in from silence over a quarter of a second or more may not be picked up at first. A plucked, struck or sung note, or one that fades in within 50 ms, reads at once.
How much CPU does it use?
The reading costs about 0.85 % of one core at 44.1 or 48 kHz, and about 1.6 % in the bass range with its two detectors (upper bounds, as measured). With the window open and a note moving, the display adds 1.28 to 1.43 %; closed, nothing.
Why is my track silent?
Until Zer0 Tuner is activated on your computer it is silent and does not read, and the activation card covers its window. Activate it with the code we email you.
Does it work in my DAW?
Any 64-bit DAW that loads VST3, AU or AAX plug-ins, on Windows 7 SP1 or later or macOS 10.13 or later. There is no standalone app.
How many computers can I use it on?
Up to five of your own for each copy you buy. To move it, deactivate it in the plugin on the old computer and unlock it on the new one.
Does it need the internet?
Once, to unlock it with the code we email you. After that it checks in now and then and works offline in between.
Is there a manual?
Yes. The full manual explains every control, every preset and the menus, with tips. It opens from the help key (?) in the plugin's top bar, and lives at https://voxsamples.com/zer0-tuner-manual.
What if it's not for me?
Request a refund from your account within 90 days.
Founder's Story
"When COVID hit, I finally had time to dive into music production—only to discover I was missing the right tools. The plugins I tried were clunky, overloaded with unnecessary features, and killed my vibe with endless tweaking. I knew there had to be a better way.
So, with my engineering background, I started making free and simple audio plugins for my producer friends. They loved them! That’s when I set out on a mission to create plugins that save you time, streamline your workflow, and keep your creativity flowing."
- Ryan Svensson (Founder & CEO)
The note of any sound. And how far to shift it.
Any note to a tenth of a cent, the note a kick or a sample settles on, the exact shift to your song's key, and your sound passing through bit for bit with zero latency.
$42.55 AUDPrecio habitual $141.86 AUD70% off
- 90-day money back
- Five computers
- Lifetime updates
Pairs with
Zer0 Tuner
$42.55 AUDPrecio habitual $141.86 AUD70% off