I've seen similar threads, and I've done a search, but I need a little more specific and detailed technical info on wireless. I used to use a Shure "Guitarist" dual-diversity model, which was OK for four strings, but had a lot of trouble producing anything on the B string. I'm looking for a new wireless that has a frequency range down to at least 30 Hz. Of course, X-wire is the choice, but I can't find one, and the mowfks won't answer my pleading e-mails. Their specs say that the low end of the response is 10 Hz. I've done a little research on Shure units, and even their best ones only go down to 50 Hz + or - 2db. If it's 30 Hz + or -6db, maybe I can live with that, but that spec is not available. I've also checked Sony (100 Hz at the low end) and Nady (can't remember, but not satisfactory). So who out there knows one of two things: Where can I get a new X-wire, or who else makes a wireless with frequency response down to 30 Hz or lower? Sennheiser maybe? They have a digital unit out (licensed from the ersatz X-wire, I think), but I can't find it on their site. Help me ... I'm dying here, chained to my amp by a Monster cable.