Kinda leery of NADY now.
I did have their original units when they 1st came out(mid 70's) and stuck with NADY up until the late 1980's. Back then they were made of METAL(transmitters and receivers) and could be dropped(ask our former roadies and me). Also back then, John was a pioneer and his stuff HAD to work or he'd become a "has been". The only issues we ever had was low battery life(before low power surface mount electronics!) and the antenna on the transmitter resembled a long piece of black spaghetti which sometimes got damaged or pulled out of the transmitter.
With the newer ones of plastic, we've seen problems(cracking, jack issues/failure)
no matter the "30 Hz" spec.
Switched to Sennheiser EW-172's.
Although the spec says 40 Hz ~ 18,000, we(my son and I) have had excellent results with 5 strings.
They are about 1/3 more than the NADY but worth it IMO.
With the NADY at $270 and a Sennheiser at either $379(
http://www.americanmusical.com/item-...ENEW172G2.html ) or $450(
http://www.americanmusical.com/item-...2G2-A-PAK.html ) I'd seriously think about the Sennheiser. Also, with the non-closeout one and a credit card(check card) you can put it on flexpay to help afford it(Did this with the one for my son).
Just my opinion.
FINAL NOTE:
No matter WHAT the "salesperson" tells you, check the factory frequencies your area!!!!http://www.sennheiserusa.com/frequen...er/default.asp
I had a number of online and real stores giving me nonsense-talk and trying to sell me "A" or "B" banks that prove BAD for the south Texas area. Since I check specs on instrumentation for a living, I called the factory and their fellow geekman said "No. You really need C band for that part of the country."
Saved me a LOT of grief.