OK, I' ll give my experiences, it's not Neumann microphones related (although Neumann was acquired by Sennheiser, so...)
I'm not very happy with digital Microphones. I tried, paid a bunch, got frustrated. Never tried again and am happy with the good old analog signal.
Several years before I bought the Sennheiser MZD for 8000 https://en-us.sennheiser.com/mzd-8000 series Module that converts the analog signal to an AES signal, and tried using it on my sd 633 AES input.
I Wanted to have more flexibility (like pads or low cut filters setup via DSP) and less noise floor, and use a digital mic,seems cool, theorically. It's supposed to be the future of audio, right ? For me it seemed uber cool.
After One or 2 shots, I went back to my analog preamp. I just heard a random, very subtle, but sometimes present, hiss. Went tru a lot of tests to sort out the problem, never had the solution until now.
Got the file on a spectrum analyser, did lots of analysis of this signal before put the module on the closet and forget about this very expensive compulsive buy that does not fit my expectations.
Among others things :
- I Used a "true" AES cable (this is not cheap and I felt kinda forced to buy it just to try if the signal was better but this "true AES pure 110 ohm cable"... Humpf... Did not fix the hiss). But now I got an expensive neutrik AES cable, nice. I could use it as a premium XLR cable.
- I asked Sound Devices & Sennheiser support and I got some leads.
I was wondering about the samplerates who might mess up the signal but the 633 has a Sample Rate Converter built in, so I wouldn't worry so much... Sennheiser on the other hand told me that, hold on, the sample rate as factory preset in their module is....
So I always thought maybe this little high frequency hiss might come from an upconversion from the SRC, due to (I'm guessing) some interpolations samples created, But I'm not expert.
I asked Sennheiser What Could I do to match the module and recorder sample rates and avoid an extra work from my trusty 633 who does allready a lot, hoping that they would tell me that they'll fix this for me, as I paid top dollar for an MKH plus this module...
...Their answer was "we don't have this line of products in mind and are not really keen to develop full support for the MKH series" (duh) "so what you could try, is to buy an neumann DMI interface and change the samplerate yourself via the DSP and enjoy the full experience with this wonderful items"... If you ask me, it's just too vague. I will not put more money to "try" just change a setting and pray that it fixes the problem.
Well. At this point I just put this module on the useless sound stuff shelf on my closet. And tried to reach someone who might have this neumann DMI interface just to change the samplerate, but it is not a very common product.
So yeah here it is.
I hoped when I bought that digital module also that sennheiser would developp an MKH8030 so I could pair the MZD module to a figure 8 and my 8060 and have a really nice digital MS rig but seems compromised also.
Sorry for the long text, and the poor english.
in analog we trust