Audio-Technica has debuted its 6000 Series high-density wireless system, a spectrum-efficient solution that allows users to pack 31 channels in 4 MHz of bandwidth. The 2016 FCC Incentive Auction has resulted in a repack of the broadcast spectrum, reducing the amount of spectrum available for wireless microphone operations and driving the need for spectrum-efficient technology to operate a high number of simultaneous channels in today's market. To address this issue, Audio-Technica developed the 6000 Series, whose channels are spaced at 125 kHz intervals and can all be used simultaneously. The system operates in the 944–952 MHz band, which is free of broadcast TV. The FCC has expanded license eligibility for this band beyond broadcasters and content creators to include sound companies and venues that routinely operate 50 wireless microphones or more.

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