All LDI2010 attendees who register for Rational Acoustic’s Smaart Training at LDI2010 are eligible for these two special offers: 1) Free RTA-420 Microphone All LDI2010 attendees who take the Smaart training course will receive a free RTA-420 (an $80 value): A great little budget-friendly measurement mic with an impressively flat response curve for its price, the RTA-420 features heavy-gauge steel construction and measurement performance to rival high-end microphones costing many times ...

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