It does sound like a million! The Kahler gives this bass a boat load of sustain, and the resonance of the strings is amazing. It's actually fairly loud unplugged. It's also pretty lightweight. I haven't officially weighed it yet, but it feels lighter than my 78 Pbass (9.5 lbs).
As for neck widths, it's the standard SII measurements:
Nut width 1.750
24th fret width 2.250
It does have red LEDs, BTW.