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By coincidence I found this information today."Due to the XLR shield and ground pin specification (see https://en.wikipedia.org/wiki/XLR_connector), some manufacturers implement it differently from others, therefore there could be humming noise if a non NuPrime product is connected to MCH-K38 using XLR cables.XLR Hum Eliminator products from http://www.ebtechaudio.com/hedes.html can be used to completely remove the noise and improve performance."It seems to me that Nuprime has made some kind of special xlr connection in MCH-K38. It can' t the same as in STA-9. Why? This is not good at all! I found the information in the FAQ releated to Home Theater and not in the Power Amp section. Now I have to spend money on one or several "Hum Eliminators".
Apparently the engineers found a "fix" in a snap in replaceable board.
Now things are moving a little bit forward.
This evening I have installed the new board, but there is still a 50 Hz humming noice. What to do?
I'm considering the NuPrime MCH-K38 but on one dealer site SNR is listed as < -80dB, which doesn't seem acceptable to me, but on the NuPrime site it's listad as SNR < -95 dB which isn't that great either, someone want to enlighten me?
I'm considering the NuPrime MCH-K38 but on one dealer site SNR is listed as < -80dB, which doesn't seem acceptable to me, but on the NuPrime site it's listad as SNR < -95 dB which isn't that great either, someone want to enlighten me?ThanksJ
Only a 1 year warranty . Most amps are at least 3 years if not 5. Wyred 4 Sound 5 years, Emotiva 5 years.That is a deal breaker for me.
It's listed as > 80dB in the Specifications section of the downloadable Manual as well.MCH-K38 Manual