With reference to the current discussion about EMI maybe causing clicks. I have no idea if it is possibly the fault. Or if there is even enough EMI interference around a person's home to do that.
I suggested it because there seems to be a suggestion that interference may be causing clicks in my system. My cables run right next to a desktop Q Acoustics BT3 speaker, with a bass driver in it. I am in the position where I might have to buy a shielded USB cable to see if I can cure the clicks. I get then when using PC CD FLAC, and PC games....However that doesn't explain the very regular clicks I got when playing from a DAB tuner over (a cheap) optical cable.
However I am theorising that it could just be low quality cabling causing it. I guess that because some folks ages back cured clicks in music at 192KHz by buying a quality cable.
Some issues are more difficult to troubleshoot. Honestly without any bad thinking, the more I read your threads the more problems I am finding...
IMHO, I you want to have a chance to solve them you should tackle in a one by one issue approach.
Please do note that I am well aware that technical issues or trials are not everybody's cup of Tea. In that case I would rather call a 'technical friend' at home for helping.
The troubleshooter head-fier must have a clear view of your DAP/Computer settings as well as the digital audio signal path ( Inputs/Outputs/In between Hubs/USB/Fiber/Coaxial/etc...)
The troubleshooter head-fier must have a clear view of your Mojo's Outputs' connections even if not used.
The troubleshhoter head-fier must have a clear idea of your issue occurence: always/10*clicks per hour/during night/during day/randomly
The troubleshooter head-fier must have a clear idea of any probable occurence correlation with other factors ( clicks when playing 3D games/ switching on AC/etc...)
If you like let's start with your DAB tuner - stock optical TOSLINK-Mojo. In a previous post you mention a sampling rate of 48 kHz.
Issue posted: very regular clicks.
May I suggest you to switch off all your surrounding devices (Desktop/Screens/etc) and only have your DAB/Mojo on battery/Output Headphones.
Then tell us if in those circumstances you are still facings regular clicks?
Additional information: DAB tuner reference ?
Please do note that a DAB tuner, despite outputing digital , is mainly a RF receiver who should include a small cable acting as an antenna.
As such, it is very likely to catch and amplify any eventual interference. Put your mobile (RFswitched On) on top of your DAB and you should experience clicks/pops every 2-3 minutes.
Regards