Feb 14 2018, 09:57 AM
QUOTE(StonerAcoustics @ Feb 12 2018, 12:42 PM)
Hi big1,
IEM noise is a tricky question to answer:
1. Output noise is largely dominated by PSU design. The PSU noise may come from your phone's switching supply.
2. Impedance mismatch caused by the interaction of the amplifier and the IEM. (this would help if you use some good inline resistors)
3. The UD125 works for most IEMs and Headphones, we do not have a customer with a noise problem, but again this is purely down to how QUIET you want it to be. If you want the best "black" background then you simply have to run linear power supplies, unity gain amplifiers etc.
We hope this helps answer some of your questions.
hi mate, just curious is there anyway to test UD125 with my IEMs, the Kz Zs6 and heaven II ?IEM noise is a tricky question to answer:
1. Output noise is largely dominated by PSU design. The PSU noise may come from your phone's switching supply.
2. Impedance mismatch caused by the interaction of the amplifier and the IEM. (this would help if you use some good inline resistors)
3. The UD125 works for most IEMs and Headphones, we do not have a customer with a noise problem, but again this is purely down to how QUIET you want it to be. If you want the best "black" background then you simply have to run linear power supplies, unity gain amplifiers etc.
We hope this helps answer some of your questions.
currently both IEMS produce hiss when i plug in to my phone (huawei P9 and Mi Max) or PC. but no hiss when plug into a good sony mp3 player.
can UD125 do the job by lower or eliminate the hiss, so that the produced sound will be clean? or should i just stick with inline resistors?
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