I too have been enjoying a NAV. When it's functioning properly, it is powerful and very competent. I'm using light compression on the inputs and a harder limiter on the outs. I also delay the input by about 10-15 feet to line the PA up with the acoustic sound of the drum kit. I have programmed patches for stereo 3-way, full range (for podium gigs), and even some for specific venues (with delays and some extra EQ). Overall, it has proven to be a great unit.
My beef however is with connectivity and a related reliability problem. I'm using my old laptop (P3, windows2000) and a Radio Shack USB to DB9 interface (which came with drivers on CDRom). On many occaisions, I have received the message "Must Log on to this device". Then, after entering my password, the same message pops up and I can't access anything. I have also experienced sporatic episodes where I'll lose an output (in this case, the sub output) and the display will no longer register input or output signals. As you could imagine, this has been a drag when its happened during a show. I have to yank the USB and go "front panel" to get back to something usable- bummer.OBTW, I'm running software v5.04 and firm v 5.11
I'm wondering if any of you have experienced this and what kind of interface cables you are using (and how succesfully).