Studio Six Digital

QirraSound Technologies Europe AB has bought 50% of the company Studio Six Digital in the United States. Studio Six Digital has developed a series of products that makes it possible to perform professional audio measurements using an iPhone or iPad. VINNOVA in Sweden has recently decided to grant an application where this product platform will be further developed so that generic sensors with ICP (or IEPE) can be connected as well as wireless devices. This provides a great opportunity to easily conduct complex professional audio measurements according to the standard.

Studio Six Digital Spring 2016 Newsletter

Typical products


iphone5 menu

AudioTools is the professional audio test & measurement app that gives you a comprehensive set of tools on your iOS mobile device. Perfect for A/V techs, FOH, recording engineers, acousticians, home theater installers, and anyone who loves pro audio.

Upgrade AudioTools with iAudioInterface2, or iTestMic, to complete your mobile professional audio test & measurement system.

App Store Badge white2


iTestMic is the most affordable way to have a calibrated SPL Meter, RTA, FFT analyzer and more.  Plug it into your iPhone, iPod touch, or iPad to get a mobile professional test & measurement system. (2600 + moms).

iTestMicAndSPLUse it for home theater setup, live sound, SPL testing, or sound contracting work.



iPrecisionMic is the newest addition to the Studio Six Digital family of acoustic test & measurement products. Plug it into your iOS device running AudioTools and instantly you can have a Type 1 certified sound level meter and analyzer.

iPrecisionMic02Perfect for noise monitoring and surveys, critical acoustical analysis work, and any time that a high-quality precision professional microphone is required. Available both with and without a Type 1 Calibration Certificate, starting at 12600 + moms.



iAudioInterface2 and included iOS Lightning and USB Audio interconnect cables. The professional audio interface for iOS devices made to work with for AudioTools. Phantom powered mic input, balanced line input and output, digital audio output, internal battery, and iOS device charging.

SPL Traffic Light

SPL Traffic Light is a dual SPL monitor, designed to be used to monitor SPL levels for live concert sound, community noise, and any public space that needs to be in compliance with sound level regulations. Use SPL Traffic Light with the built-in iOS device microphone, or pair it with our iTestMic for Class 2 results, or use it with our iPrecisionMic for Class 1 performance. Note that it is possible to certify the entire instrument as Class 1, by sending iPrecisionMic and your iOS device to an independent testing lab.

Having two independent monitors allows it to adapt to nearly any community noise standard regulation, since you can set one meter for C weighted Fast, and the other for an Leq (average) time. The example here shows exactly that setup. This flexibility makes our SPL Traffic Light the most versatile SPL monitoring system available on any platform.

You can also enable email notifications, based on the display criteria for the red dB trigger level. Notifications can be based on just one SPL monitor triggering into the red zone, or either or both triggering. Enter your own gmail credentials for the email notification server. Note that Google’s policies may require you to go to your own gmail settings, and enable access from a third party app.

Screen Shot 2016-05-11 at 11.52.08 AM

Youtube videos in regards to the products:

SPL Graph


Transfer Function

Smaart Spectrum