Do the older shure vocal mics, 515, 585, 545 etc. have hi-z elements or are they lo-z with a transformer inside? Thanks! _________________________________________________________________ Hotmail: Trusted email with Microsoft's powerful SPAM protection. http://clk.atdmt.com/GBL/go/177141664/direct/01/ http://clk.atdmt.com/GBL/go/177141664/direct/01/