Mobile DJs and bands
A different room every weekend. Set up, run the sweep, apply, play — and save the setup per venue to load it again next time.
PA system tuning · Windows, Mac & Linux
Every room bends your PA. AURIX measures it and sets it up.
Put up a measurement mic, run a sweep: AURIX proposes EQ, crossover frequency, delay and polarity between subs and tops, and processes everything live on your laptop. You see the result and a confidence score before anything is applied.
No credit card. Full version. The clock starts when you first launch it.
- Measured: this is how the room bends your system.
- AURIX works out the correction.
- After Auto-EQ: close to the target.
Windows 10/11, macOS (Intel & Apple Silicon) and Linux · your existing audio interface · measurement mic required (not included)
Who this is for
For everyone who sets up a PA.
Rental and event technicians
Align subs and tops, set the crossover, keep the level under a limit — with a laptop and an audio interface instead of a controller for every rig.
Clubs, halls and churches
A fixed install that was never tuned. One evening with a measurement mic brings subs and tops together. There is a dedicated target curve for speech.
First, the system as it stands.
Mains, subs, front fills, delay lines: you put together what you have set up — from a template or from scratch.
- Up to 16 speaker zones on a floor plan, each one movable.
- Every zone gets its own output, device and channel. AURIX shows the jacks of a 7.1 card in their colours.
- The channel test plays quiet noise on exactly one output, so you hear which speaker really answers.
Zones, floor plan and channel test have been part of AURIX since 1.7.
Setup
Your stage, from above.
Templates for the usual rigs — from the classic two tops and a sub to a DJ booth with a monitor. Or start from scratch.
One sweep. The whole calculation.
One sweep through the system is enough for AURIX to suggest what can be improved — and to show how much it helped.
Sweep
An exponential sine sweep plays through the system while the measurement mic records.
Impulse response
AURIX deconvolves the recording into an impulse response. From it come frequency response, delay and RT60.
Filters
Suggestions for EQ, delay, polarity and crossover. You tick what gets applied.
Quality score
How far the system deviates from the target before and after the correction.
Values for the tops from the screenshot below, measured through a digital test loop.
Apply
See it before you apply it.
Every correction on its own: switch EQ, delay, polarity, level and crossover on or off — only what you apply goes to the system.
How it works
Four steps from setup to result.
Connect your mic
A measurement mic on your audio interface. Calibration for the Pioneer APM7008 is built in; other mics get their calibration file in REW format.
Run the sweep
AURIX works its way up to the right measurement level, checks the signal-to-noise margin and measures subs and tops separately.
Review what it found
Measurement, target curve and response after EQ, plus delay, level, crossover, RT60 and the confidence score. Checkboxes decide what is applied.
Apply and play
Your audio runs through AURIX to the outputs of your interface. Save the setup per venue and load it again later.
The overview: the system on its floor plan, hearing protection and sound pressure, the auto-EQ quality score — plus mute all, measure and export in one click.
Screenshots from AURIX 1.8. The measurement for these screenshots ran through a digital test loop, not in a room.
What's inside
It shows its work.
Every measurement gives you frequency response, delay and a confidence value. You tick off what gets applied.
Measurement by sine sweep
An exponential sweep, deconvolved into an impulse response. That yields frequency response, arrival time and reverberation time (RT60) — and only the arrival time makes aligning subs and tops possible.
It tells you when NOT to apply
If AURIX does not trust the measurement, it refuses to apply it and names the reasons. You can only override that explicitly.
Time alignment you can check
Delay in milliseconds by cross-correlation (GCC-PHAT) and automatic polarity detection — you apply both with a checkbox.
Spots cancellations
A dip caused by a second path cannot be filled with EQ. AURIX does not boost there; it tells you the path difference in metres and milliseconds.
Crossover and protection
Linkwitz-Riley, Butterworth or Bessel at 12 to 48 dB/oct, a subsonic filter for the sub and a limiter per output path.
Updates itself
Under System → Update, AURIX checks for new versions and installs them — with a verified checksum.
LiveNew in 1.8
Every output. One glance.
Fader, meter, mute and solo for every speaker — just like on a system processor.
Hearing protection
A limit that holds.
Holds the A-weighted continuous sound level at the figure you set — even when someone else is at the desk.
- Measure first, then limit
- You calibrate the sound pressure once — with a calibrator or against a sound level meter, even a phone app. Without calibration AURIX does not limit and tells you it does not know the level; with the estimate from the tuning run it warns explicitly: estimated, not measured.
- The quantity that matters
- What is controlled is the A-weighted continuous level (LAeq) — the quantity that damages hearing over hours. A second, instant stage caps the C-weighted peak. Subs and tops come down together, so the measured balance is preserved.
- Visible while it works
- The running LAeq over 15 or 30 minutes is shown in the application — together with how much of the window has actually been measured. Plus the reduction in dB, so you can see whether you are hitting the limit.
SourcesNew in 1.8
Spotify, AirPlay, line-in.
Music straight into the system — every source with its own name and its own level.
One program. Three systems.
The same AURIX on Windows, macOS and Linux. One licence covers three devices.
Windows
10 and 11, 64-bit
macOS
11 or newer, Intel and Apple Silicon
Linux
x86_64 as AppImage, Ubuntu 22.04 or newer
On the screens: AURIX 1.8.
Compared with
What it replaces.
The tools people actually buy for this job, with prices for orientation. The rows where AURIX loses are in the table too.
AURIX
€20once
Hardware processor
€120–600
Measurement suite + correction plug-in
≈ €800–900
| AURIX | Measurement suite + correction plug-in | Hardware processor | |
|---|---|---|---|
| Swept-sine measurement | Yes | Yes | Partly |
| Automatic sub/top time alignment | Yes | Manual | Manual |
| Confidence score that can refuse to correct | Yes | No | No |
| Crossover up to 48 dB/oct | Yes | No | Yes |
| Calibrated SPL meter | Yes | Yes | Partly |
| Calibrated maximum-level ceiling | Yes | No | Partly |
| Runs on macOS | Yes | Yes | Varies |
| Runs without a laptop in the signal path | No | No | Yes |
| Analog inputs and outputs of its own | No | No | Yes |
| Interface language | German, English | mostly English | Varies |
Ballpark figures for typical configurations, not quotes. If you only want to measure: REW is free — it measures and calculates filters, but does not process audio live.
The honest part
Be sceptical.
Everyone who has tuned a system has seen auto-EQ make things worse. Here is what AURIX does about each of the usual failure modes — and where it cannot help.
Auto-EQ boosts cancellation nulls and wastes headroom.
Fair. AURIX detects cancellations caused by a second path, does not boost there and tells you the path difference. And if the measurement is uncertain, it refuses to apply it.
A measurement mic in one spot does not represent the room.
True. AURIX measures at one position — put the mic where the audience stands, then check the result with the RTA at a second spot.
It will flatten the response and the system will sound dead.
No. AURIX proposes, you decide: checkboxes choose what is applied — and afterwards every filter can be switched off or edited by hand.
I do not want a laptop in my signal path.
AURIX runs your audio through your interface. If the computer dies, there is silence — as with any computer in the signal path. For critical shows, keep a hardware path alongside.
How do I know the measurement is right?
Check it. Measure the same rig in REW or Smaart and compare — every parameter is on screen.
What happens when it is not sure?
Then AURIX refuses to apply and names the reasons. You can still apply explicitly — or measure again.
Measure the same system in REW or Smaart and compare our result. If it disagrees, tell us — that is the most useful message you can send.
What you need
Three things — you probably own two of them already.
Measurement mic — required, not included
Any measurement microphone. Profiles for miniDSP UMIK-1/-2, Behringer ECM8000, Dayton EMM-6 and Pioneer APM7008 are built in; any other calibration file in REW format works too.
For example
Your existing audio interface
Audio runs through AURIX to its outputs — at least two, for subs and tops. Ideally all outputs on one device: one clock, nothing drifts apart.
For example
Windows 10 or 11 (64-bit), macOS 11+ (Intel & Apple Silicon) or Linux (x86_64, AppImage)
No special hardware needed.
These are plain Amazon searches with no affiliate program — we earn nothing from them. Any comparable device works.
All technical data
- Measurement
- Exponential swept sine, deconvolved to impulse response
- Smoothing
- Frequency-dependent windowing (15 cycles, continuous), psychoacoustically variable smoothing
- EQ
- Parametric, matching-pursuit fit against exact biquad curves
- Time alignment
- GCC-PHAT cross-correlation, multiple runs, automatic polarity detection
- Crossover
- Linkwitz-Riley, Butterworth, Bessel up to 48 dB/oct
- Dynamics
- Program compressor, per-path limiters, hearing protection on the master (LAeq + LCpeak)
- Metering
- RTA with peak hold, calibrated sound pressure display (LAeq, LCpeak), RT60
- Updates
- From inside the application, with a verified checksum; optionally AURIX checks quietly at start-up
- Licence
- Perpetual, no dongle, 3 activations, updates included
- Application language
- The application interface is available in German and English (since 1.7). Website and account are available in seven languages.
Pricing
One price. Yours permanently.
All updates included. No subscription, no dongle, no online requirement — AURIX starts without a connection.
One-time payment
€20once
perpetual licence · 3 activations · updates included
Try free for 7 daysOr buy right away€20oncePay with
Apple Pay · Google Pay · Link · Card (Visa, Mastercard, Amex) · Klarna · Amazon Pay · Revolut Pay
Depending on your country also EPS, Bancontact, BLIK, MobilePay, Multibanco, MB WAY and Satispay.
30-day money-back guarantee — write to us and you get a refund, no questions asked.
The statutory right of withdrawal for digital goods lapses once the download begins. The guarantee above is ours, given voluntarily, and applies regardless.
- Perpetual licence — pay once, keep it
- Measurement, Auto-EQ, time alignment, polarity, crossover
- Program compressor, limiters and the hearing protection with its LAeq limit
- Calibrated SPL meter, RTA and RT60
- Save setups and load them again per venue
- 3 activations — desk laptop and spare machine
- All updates, including major versions
- Support by ticket, straight from the developer
Who is behind this
AURIX is made in Germany by Tim Luis Techert — someone who tunes PA systems himself. Every version is listed openly with its changes.
- Seller: Tim Luis Techert, Thalberg · Legal notice
- Payment via Stripe — we never see your card details.
- Invoice created automatically, available in your account.
- Cancellation policy · See the changelog
Knowledge
Questions from the field
What goes wrong when tuning a PA and why — explained without sales talk, useful even without AURIX.
Feedback: why it squeals and what actually helps
Feedback is not bad luck, it is a loop with gain. Which lever buys how many decibels — ordered by effect, not by effort.
ReadHow to tune a PA, step by step — what actually matters
Five steps, ordered by their effect in decibels: tops, subs, timing, target curve, equaliser. Why the equaliser comes last — and how to measure so the measurement holds up.
ReadNobody can understand the speaker — and louder does not help
In a reverberant room, more level does not make speech clearer, it makes it worse. Why that is, and which four measures actually work.
ReadSubwoofer placement: the corner and the striped field
The corner gives you level and takes away evenness. Two subs left and right lay a striped pattern across the audience. Changing either costs nothing.
ReadWhy an EQ cannot fix a cancellation
A deep, narrow notch in the response cannot be equalised away. Why that is, how to recognise it, and what actually helps instead.
ReadTime-aligning subs and tops
The crossover region sounds thin, the kick has no punch. Why measuring distances is not enough, what counts instead, and how to verify the result.
ReadWhich measurement microphone?
A microphone with a known deviation beats a flat one without. What a measurement mic has to do, what you can skip, and what happens without calibration.
ReadHow loud is too loud?
"100 dB" can be a peak or a half-hour average — with music there are about 17 dB between them. The two quantities that actually matter, and why any limit without a measurement is a guess.
ReadWhich crossover frequency?
80 Hz is a home-cinema convention, not a PA rule. What really sets the crossover, why crossing higher demands tighter time alignment, and how to verify your choice.
Read
Remaining questions.
What exactly do I need besides the software?
A measurement mic, an audio interface and a computer. We supply none of them.
Does my audio have to run through the laptop?
To process audio, yes. The signal comes in through your interface — or, if you want to process the computer's own audio, through a virtual audio device (Windows: VB-CABLE, macOS: BlackHole) that AURIX points you to. Measuring alone works too; you then transfer the values to your rack by hand.
How many computers can I use it on?
Three activations per licence. You can release a device in your account at any time, so replacing a laptop is not a problem.
What happens after the trial ends?
The software then asks for a licence again. Your measurements, filters and setups stay on your computer — after you buy, everything is right where you left it.
Do I need to be online?
Only for activation. After that the licence is verified locally, so the software keeps working without a connection and checks in when it can.
Is there a macOS version?
Yes. AURIX runs on Windows and on macOS 11 or newer — on Intel Macs and, since version 1.6.2, as a native build for Apple Silicon (M1 and newer). Both Mac builds are listed separately in your account. The licence covers both systems and you can spread your three devices freely. One thing up front: the Mac build is not registered with Apple, so macOS asks once on first launch (right-click → Open). The interface is available in German and English on every system. Since version 1.6.4 there is also a Linux build (AppImage for x86_64, Ubuntu 22.04 or glibc 2.35 and newer).
Can I get my money back?
Yes, 30 days, no questions asked. One message is enough.
Am I legally covered with the hearing protection?
No, and we do not claim it does. AURIX holds the A-weighted continuous level at the figure you set, caps the C-weighted peak and shows both over 15 or 30 minutes. Regulations such as DIN 15905-5 additionally require a Leq log and a sealed limiter from an approved body — AURIX replaces neither. Nor is it a certified measuring instrument.
Measure it yourself.
Seven days, the full version, no card. If the result does not convince you, you have lost nothing but an evening — and you will know more about your PA than you did before.
Turning the system clock back does not extend the trial — AURIX then asks for the correct time, and at the next sign-in the server's clock counts.
Windows 10/11 and macOS (Intel & Apple Silicon) · updates included