Stay away from Nady products. I bought a used Shure wireless model T4G from Ebay and its sounds wonderful. I think I paid around $135 shipped for it. One important aspect that alot of ppl dont verify when buying a wireless is freq. response. Those who say that a wireless "degrades" your sound probably tried a wireless with too high of a freq. response. Make sure when buying one that its response goes low enough to produce good bass frequencies. I had a friend who bought a Shure unit for his bass and said it sounded bad. Well it was because the frequency response was for vocals or guitar, not bass. Alot of them only go down to 60 or 70 hz.(= no good for bass). Also the cable from the wireless to your amp needs to be good quality, like Mogami Gold or such. My bass is strung Bb,Eb,Ab,DB, and my wireless sounds 99% as good as a Mogami Gold cable. Also, I consistently get three,yes that right (3x) 4hr., 42 song gigs out of one 9v battery! Our guitar players can barely get one gig out of 2 AA's with their Brace Audio units.
The T4G spec: Audio Frequency Response: 35 to 15,000 Hz, ��3 dB