This is my second Red Devil.
I bought it to put into my spare strat ('05 Fender Greg Fessler 64 Masterbuilt Relic).
I'd been using a SD Hot Rails for years and was very interested when these were announced. I love having a HSS arrangement in a strat but some strats aren't routed for a full size HB.
Installation was easy, there's plenty of wire available and the cable is flexible enough to allow easy routing under the pickguard.
Fits into standard usa strat single coil cutouts without modification needed.
The sound is glorious. A slightly hot PAF style sound with great grit and drive. Nice mids too that really cut through and it plays very well with single coils. It's not too much louder than the SC sounds on their own which is great.
It also responds well to 250k pots rather than the 500k ones usually used for humbuckers, so I haven't felt the need to replace the tone pot at all.
It also responds great to volume pot changes and cleans up nicely, but doesn't become shrill or thin.
My next task will be to wire in the coil tap so position 2 on the pickup selector splits the coil when added to the middle pickup.
It's a great pickup, definitely a step above the tone of the Hot Rails.
One thing I will mention is that it absolutely does not play well with the USA PRS Silver Sky guitars. I don't know why but it sounds wooly and muffled, the top end was completely gone.
Put it back into a normal Fender Strat and it's back to being a brilliant pickup.
So if you were buying one for a PRS SS, caveat emptor.