The one on the right (stage left) is a factory custom issue. DF522NN (NN for Notes Norton) with two Duncan P-Rail pickups with triple shot rings. These pups give me the following sounds: P-90, Rail, Series Humbucker, and Parallel Humbucker. Like all DFs I can blend the Piezo with the magnetic pups.
The P90 and humbucker sounds are very good, the Rails are good too but weaker in volume (no problem, I have a volume knob).
I bought the 524 and loved it, but I had been playing a guitar with P90s on the gig for a couple of years. After playing a P90 guitar exclusively for a long time, everything else just sounds dull. So I had the factory build one for me. The extra charge for the custom build was reasonable.
On the gig the pups are in the P90 mode for most songs, a dozen or so need humbuckers, and a few need that "fender" sound of the rails. The Piezo gets blended in when I need some extra twang. I never play piezo only because although it does sound acoustic, it's thin. I have an acoustic sim on my pedal that sounds more like a flat-top than the piezo.
I hope these guitars take me until I reach my coda. I can't imagine being happier with any other guitar.
The only problem with the Parkers is that I no longer have the joy of GAS.
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