HiFyAK2020
100+ Head-Fier
I am not an "expert" but as a MSC in Electronic I have had some knowledge in this area. Generally Balanced connections (outputs) provide a much better protection from noise levels and from interference. It is THE type of connectivity in professional AUDIO systems as it has the best transmission characteristics. What is done is basically splitting up a a signal from 0 to 5V for example to a signal of -5V to +5V thus increasing resilience and also diminishing the influence of the cables. Cables have induction, resistance and capacity characteristics (not avoidable) which act as filters (low pass or high pass filter) and a balanced output helps to reduce noise levels, increases signal accuracy and lowers distortions. For IEM's it has the practical aspect of not only reducing the THD+N issues, but also increases the output power - as to be seen in the links that i sent in earlier responses. For a NON trained ear, the differences are minute and eventually not recognizable, as is the difference between cable IEM's and wireless IEM's (as Bluetooth has lousy AUDIO signa characteristics) - many people would not even be able to hear the difference between the mp3 files and FLAC or other audio lossless recordings. That was the breakthrough from the Fraunhofer Institute in Germany who developed the mp3 encoding - they figured out that most people can be tricked and do not hear the subtle differences in recorded music.
FOR AUDIO freaks (like me) and for trained ears (as most musicians for example have) the difference is bluntly noticeable and therefore we have to spend respective money and use the most advanced technologies (like balanced output signals) to be satisfied with the results. I can hear the difference between balanced and unbalanced signals and that means that i will never be able to switch to wireless Bluetooth IEM's - sad.
So if you are easy going with sound quality - don't bother with Balanced or unbalanced signals - if you do want the best sound reproduction available from your device and it provides balanced outputs - you should seriously consider and use it !
FOR AUDIO freaks (like me) and for trained ears (as most musicians for example have) the difference is bluntly noticeable and therefore we have to spend respective money and use the most advanced technologies (like balanced output signals) to be satisfied with the results. I can hear the difference between balanced and unbalanced signals and that means that i will never be able to switch to wireless Bluetooth IEM's - sad.
So if you are easy going with sound quality - don't bother with Balanced or unbalanced signals - if you do want the best sound reproduction available from your device and it provides balanced outputs - you should seriously consider and use it !