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  1. SPL Meters | Mic's | Calibration | Sound Cards
    Hi all, I have a few calibrated SIA RTA-420 mics for sale. These mics are exactly the same as the dbx RTA-M microphones, and the mics the Sencore includes with some of their meters. These mics typically sell for $80-$120. I'm selling the mics with Premium+ level calibration (on axis, off axis...
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