Hi, Lurked for a while, but this is my first post. I was wondering if any of the Spector gurus out there could help. I was thinking of purchasing a NS4 CRFM, and want to make sure the one I am looking at has the newer Aguilar preamp, rather than the EMG one. Can anyone recommend a method of telling the two apart (without opening up the bass of course). The only way I can think is that since the Aguilar ones are effectively boost only, that the EMG preamp Spectors may "click" when they're in the middle position, whereas the Aguilar ones don't. Anyone have any other bright ideas? Oh and.. what is peoples opinions of these Spectors in terms of balance and neckdive?