Gem Sound Professional Handheld Wireless Microphone Freq. A $19.99 + $3.49 S/H (FS $25+)

Gem Sound Professional Handheld Wireless Microphone Freq. A $19.99 + $3.49 S/H (FS $25+)

http://www.musiciansfriend.com/stupid

Product Description

The Gem Sound GMW-42 is an affordable single channel wireless microphone system featuring VHF high band operation to ensure good performance in presentation and singing situations. The dynamic microphone is designed for clarity and warmth and has an off/standby/on switch allowing for convenient audio muting while performing. This system works with any standard PA system - just plug the receiver via the included ¼” to ¼” connecting cable into a mixer and experience wireless freedom. Microphone operates on two standard AA alkaline batteries (not included).
Features

Microphone with cardioid pickup pattern to minimize feedback
Frequency response of 70Hz-16000Hz
Wireless FM transmitter and receiver
Up to 100 foot range
Frequency Stability +/- 0.005%
Includes AC adapter for receiver and ¼” to ¼” connecting cable to mixer
Low battery LED indicator

Thanks - got one. Use yes2freeship to avoid $3.49 shipping charge. If you buy more than $99 from them - you an also avoid sales tax in CA.

Question: I am not familiar with wireless microphone technology - given that this states Freq. A - would it mean that if I need to use two of these at the same time, I should purchase the other one with difference frequency? (B, C, D etc. are not on sale).