Micro portable accordion
3 back-electret condenser microphone
cardioid-unidirectional
20-20.000 Hz
-66 MV
200 Ohm
139 dB
9V or phantom power 48-52V
+ / - 1 mA
XLR balanced output

OVERALL OPINION

I use this system on my accordion for 3 years.
And taking a minimum of prcaution there are super strong.
The dynamic is the sound is warm and there is grain frankly trs good microphone.
I do it again this choice without hesitation.