PA tuning · Windows & Mac

Measure. Align. Limit.

AURIX runs a sine sweep through your own mic and works out what your PA is actually doing. You review every filter before anything is applied.

Try free for 7 days Buy — €99

No credit card. Full version. The clock starts when you first launch it.

Windows 10/11 and macOS (Intel & Apple Silicon) · your existing audio interface · measurement mic required (not included)

MeasuredWith proposed correctionTarget

Schematic illustration of the correction view — not a measurement export.

The measurement

It shows its work.

Every measurement gives you frequency response, delay and a confidence value. You tick off what gets applied.

MeasuredWith proposed correctionTargetDeviation from target curve0.5 dB

Switch filters on and off

These are the filters AURIX proposes from the measurement. Tap them — the curve responds immediately. This is exactly how you work in the software.

96 Hznot correctableCancellation from interference — no EQ fixes this. Only placement or delay helps here.

Schematic view of the correction screen — not a measurement export.

Swept sine, not pink noise

An exponential sweep yields arrival times — pink noise cannot. That is what makes aligning subs and tops possible at all.

It tells you when not to EQ

Below the threshold AURIX refuses to generate filters instead of EQing noise. A dip from a reflection is not an EQ problem.

Time alignment you can check

Delay in milliseconds, the matching distance, automatic polarity detection — and how certain the result is.

Who this is for

Three real situations.

Small clubs and bars

Fixed rig, never measured. One evening with a mic brings subs and tops together and puts the level ceiling where you want it.

Mobile DJs and band PAs

New room every weekend. Set up, sweep, apply, play. Save the result per venue and recall it the next time you are there.

Houses of worship and schools

Speech intelligibility is the whole job. Measure, use the speech target curve, and keep a level ceiling that nobody can push past by accident.

How it works

Four steps, about ten minutes.

Connect your mic
Any measurement microphone on your interface. If you have a calibration file (REW format, as a UMIK-1 comes with), load it — otherwise included: Pioneer APM7008 and MCACC.
Run the sweep
AURIX sets the measurement level itself from the mic headroom and noise floor, then sweeps subs and tops separately. Multiple mic positions get power-averaged.
Review what it found
Frequency response, proposed EQ bands, delay, polarity, crossover point, RT60 and the confidence score. Every item has its own checkbox.
Apply and play
Your audio runs through AURIX as the output device. Save the setup per venue and recall it later.

Measurement setup: mic and channel, target curve, sweep duration, calibration profile and measurement distance. Sub, tops and time alignment are selected separately.

Screen captures from the Windows application. The interface is German; see the specification table above.

Hearing protection (Levelizer)

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: AURIX measures once what sound pressure your system actually produces — with a calibrator, or against a sound level meter. Without that measurement it does not limit, and tells you it doesn't know the level. A guessed limit would be worse than none.
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 on desktop and iPad — together with how much of the window has actually been measured, plus the gain reduction in dB.

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. That is why AURIX shows every filter with its reason — and proposes nothing at all below the confidence threshold.

A measurement mic in one spot does not represent the room.

True — which is why a single position is not the default. Several positions are averaged and weighted by their spread.

It will flatten the response and the system will sound dead.

No. AURIX proposes, you decide. 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 the measurement stays your tool: you see what the room does and decide yourself.

Specifications

Everything, including the gaps.

What you need

Measurement mic — required, not included

Any measurement microphone on your audio interface. Calibration files in REW format can be loaded; two profiles are built in.

Windows 10 or 11 (64-bit) or macOS 11+ (Intel & Apple Silicon)

No macOS or Linux version. No dedicated hardware needed.

Your existing audio interface

AURIX becomes the output device. Two outputs for a sub/tops split.

Measurement: Exponential swept sine, deconvolved to impulse response
Smoothing: 5-band frequency-dependent windowing, psychoacoustic 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, calibrated SPL meter (A/C weighting), peak hold, RT60
Remote: iPad app over your own Wi-Fi, no cloud
Licence: Perpetual, no dongle, 3 activations, updates included
Application language: The application interface is currently German only. Website and account are available in seven languages.

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.

What it replaces.
	AURIX	Measurement suite + correction plug-in	Hardware processor
Typical price	€99once	≈ €800–900	€120–600
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
Tablet remote included	Yes	No	Varies
Runs without a laptop in the signal path	No	No	Yes
Analog inputs and outputs of its own	No	No	Yes
Runs on macOS	No	Yes	Varies

Comparison figures are estimates for typical setups, not quotes.

Pricing

One price. Yours permanently.

Includes every update. No subscription, no dongle, no online check each time you open it.

One-time payment

€99once

perpetual licence · 3 activations · updates included

Try free for 7 days Buy

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
iPad remote app at no extra cost
3 activations — desk laptop and spare machine
All updates, including major versions
Support by ticket, answered within one working day

Who is behind this

One developer, in public.

AURIX is built in Germany by someone who tunes PA systems himself. No subscription, no account required to run it.

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.

See the changelog Support

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. Two things up front: the Mac build is not registered with Apple, so macOS asks once on first launch (right-click → Open), and the interface is currently German-only on both systems.

Can I get my money back?

Yes, 30 days, no questions asked. One message is enough.

Does the Levelizer make me legally compliant?

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.

Questions from the field: Knowledge

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.