So now my first question is what exactly is compatible with the headset input besides the proprietary mic that belongs to it?
Officially, only headset accessories that were produced under the Made for iPod program are compatible. As we have demonstrated, it is possible to connect other sources, but it is not typically recommended (due to the low-voltage input requirements, the need for proper loading to get the iPhone OS to recognize the input, and the bias voltage).
The ProTrack would cost more and the microphones are not specialized for Real Time Analysis, though they are fairly high quality condensor microphones.
They're of comparable quality to the element in the DBX RTA mic, but they're unidirectional (cardiod), so I am not recommending that you use them. I was recommending that you plug your DBX RTA mic into the ProTrack's XLR connectors.
My second question: would I be more successful to take the line out of my SPL Meter into the dock? For that matter, I would even be willing to preamplify my RTA mic via one of my pre's or whatever sound board I am using and connect it to the dock at line level. In this case I only buy the breakout cable to get into the dock and it doesn't cost extra money for equipment that I don't need.
It seems to me that using your DBX mic with the ProTrack would be more portable than either of those solutions (and better than using a RadioShack meter). However, you could certainly use something like the Belkin TuneTalk to get your line-level signals into your iPod.
SMAART has been extremely successful so it is very hard to match up to.
The trick is matching its success, but it doesn't seem difficult to match its measurement capabilities, design, ease of use, etc.
I already am interested in Signal Scope Pro which is why I have posted in this forum to begin with.
Since you mentioned SMAART, I was actually referring to SignalScope Pro for Mac (and Electroacoustics Toolbox, which is only available on the Mac). I'm sorry if I caused any confusion, there.
Ben
