I have a Shure SM57 running into a behringer UMC202HD Audio Interface. It records all sound fine but when i try to record my acoustic guitar, there is a persistant buzz at a G2 in all the track and it always stays in the background, never disappearing. Any tips for getting rid of such a problem would be greatly appreciated.

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    wait...so when you use the mic on the guitar you hear a buzz, but not when you mic your voice? – Tyler Stone Mar 5 '19 at 22:53
  • Is it very close to the strings when you are recording the guitar? – Mark Mar 5 '19 at 23:15
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    Is the mains frequency 50Hz where you live? That's near to a G. 60Hz would be slightly flat of B. – Tetsujin Mar 6 '19 at 7:51
  • Are you recording the guitar through the SM57 or do you have it connected via pickups to the UMC? – Mark Mar 6 '19 at 9:49
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    G2 = 98 Hz, if your mains is 50 Hz, which means the buzz is very near the second harmonic of mains frequency, possible caused by some equipment powersupply. – Edwin van Mierlo Mar 6 '19 at 17:04

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