Dual-channel Uhf Wireless Lavalier Microphone System Review

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(More customer reviews)The 320 (and the 100) series Azden radios were really good radios until the FCC allocated the 700 Mhz band to the public safety service in the USA. Outside of the usa these are still popular frequencies for wireless mics, however Azden was forced to reintroduce the popular 320 with the 325 which is less expensive, has more frequencies, and is compatible with the new digital television space.
Your odds of getting a good channel with the 325 series are good while your odds of getting a cop with the 320 series are small but the consequences are high. The 796-804 Mhz space lands on top of the new public safety band. Also Azden bumped up the power on the 325 series extending an already sufficient range even further.
If you have a 320 system just check with your local law enforcement to see what their plans are to utilize the 700 Mhz band for public safety in your area before you continue to use it. Less crowded areas are not likely to pay the big bucks to move to 700 Mhz, while New York, Los Angeles, and San Francisco will be moving there very soon. The problem lies in the fact that even a 15 mW transmitter can be heard by the tall public safety radio towers in your town which are designed to hear weak signals from 30+ miles away.
Azden's updated 325 series radios are in abandoned 600 mhz frequencies and do not have this issue, while offering many new features. I am surprised the 320 systems are still being sold but azden may want to support foreign customers with their remaining stock.
Other than the frequency choice, the 320 is a great radio system offering the editor dual channel audio tracks from two lav systems. Even the semi-pro would appreciate radio stereo mics or one for each of two people in the new 16:9 widescreen format. Very few dual mic systems exist and the 320/325 system from azden is one of the most affordable to date with excellent sound quality and a decent range (100-150 feet in dense areas). A good frequency to pick is 800.000 Mhz as this is unassigned by the FCC as part of the "guard band" between systems.

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