Dayton Audio iMM-6 Calibrated Measurement Microphone for iPhone, iPad Tablet and Android

I bought this to take some measurements to try some room correction software. My latest smart phone has USB C, but I have an old phone that has a audio analogue connection so I thought I would save some money, in case I wasn't impressed with the improvement. Downloading the software for the Dayton calibration was straight forward from their website, as was adding it to the room correction software. When setting up it is important to stabilise the phone at ear level to get the best results. I was very impressed, as it highlighted the dip in the frequency curve where I expected it. I decided not to implement the changes the room correction programme recommended, as I could if I wanted to, adjust just as well using digital EQ, the changes were not so big. All in all a good experience, be aware it may not work with all phones or tablets, as I found with an old LG flagship phone. Highly recommended, well made, well packaged and quality product with great capabilities.

I recently purchased a new car amplifier and headunit, but even after some tinkering about, found the sound too harsh and also sounding dull somewhat. Research and guides lead me this, to enable half decent or good equalisation of my car audio install. It is by far the best value in the budget sector of microphones that are calibrated. For the calibration you download a test report file from Dayton audio, each unique the the units, and use the file in analysing softwares. For that I used an android app that supported the file and got myself a good budget setup. To my ears, after calibration, there was a noticeable difference, less harsh and better sound stage. I thought maybe a placebo, but non of the Alpine head units presets sounded as good or my own initial tweak done by ear alone. Having listened to music over the last several weeks, all sounds rather good. As the app used is very comprehensive but requires deeper learning, I could possibly fine tune the sound further thus truly getting the best of the microphone. For a non-pro but likes music and best I can afford, this is a great option in my opinion without breaking the bank. With other supported software, you could use this microphone to calibrate many audio setups in the home or perhaps on location. Its quite versatile and fabulous value.

Size was ok for my use it's only small but it seems to work well.

This will prove invaluable for those who would like to set up Audio playback equipment using an RTA. The Mic has a unique calibration file that can be downloaded from the Dayton Audio website, and then loaded into your device for accurate audio signal measurement. You obtain it by entering the serial number of your actual Mic. Follow the instructions on the website to load it. It is a bit fiddly to do, but the instruction are clear and work well. This uses a 3.5mm TRRS Jack, so you will need a way of connecting tat into your device. My iPad accepted this easily, but my android phone required a USB-C to 3.5mm convertor cable. Using Mobile Tools by AudioControl is the best way to use this. Recommended product.

I used this microphone as a RTA to adjust the EQ in my car after audio modifications. It's functionality, compatibility and clarity are it's high points. You can even use the microphone for high quality recordings or video production on the go. For the money and form factor, it's the only measurement microphone on the market. Bear in mind that you need to upload a calibration file to your phone to get a pure flat response from this mic. This is done with an app recommended by the Dayton website, and it's a paid app. In the UK, be prepared to spend £8 more on said recommended app. Still worth it.

Great little measurement mic that can be used with my iPad and the AudioTools app. Doesn’t replace a professional system, but when working on a budget it is better than just relying on your ears

Works fine. Build quality not that great.

Connected to my Android smartphone or tablet, and having downloaded the dedicated calibration file for my specific unit - full instructions are provided - I now have a more than adequate analyser to check the sound in a church. Yes, it is not of a type that gives wholly accurate 1/3 or 1/6 octave frequency response; to achieve such accuracy demands a considerably higher-priced mic and associated analyser hardware. If you need "absolute 100% accuracy", perhaps this is not for you. But for my usage, it works very well indeed. Highly recommended.