Andrea, if you are just recording, why not just use a quality headset, thus eliminating any problems with feedback looping, etc...? Just wondering.
Cheers,
Gary

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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)