I bought or traded for (can't remember!) a set of Dimarzio Class of 55 strat pickups from a forum member here around 10-12 years ago. The day I received them, I wired them up with new CTS pots, vintage paper in oil caps, Oak Grigsby switch using Fralin's blender wiring diagram and 'special' blender pot, as wiring becomes master volume, master tone, blender pot to dial/blend in bridge pickup to various pickup configurations...all in a new vintage cream pickguard with correct knobs.
I soldered in the hot and ground wires to the jack. plugged it in and 'GGGGNNNAKKKSNNHSHHKK' noise! "Oh crap", says I! "I will get this sorted in the morning." Well, I woke up sick in the morning and it just kept on and kept on....felt like I was going to die at any moment. All these years later, I still fell like crap, but found out in addition to 50+ years of chronic back pain, I have stage 3b chronic kidney disease, major depressive disorder, several of the anxiety disorders, PTSD, along with other assorted goodies.
So, the strat sat in its case for well over 10 years. After 66 treatments of Neurostim, (transcranial magnetic stimulation) my depression/anxiety/ptsd began to fade away and motivation to get to the problem of my strat fixed became forefront.
When starting to feel better, I suddenly thought; "What if I wired the ground and hot wrong on the jack?" 10 minutes later (after my old soldering iron came to temp) that is exactly what it was...embarrassed to say. I thought of the 10 years I wasted not playing it!
Anyway, after a month of playing these pickups (in my early 80's Tokai copy of a 50's strat) I am impressed. I'm an old blues guy who plays clean 80% of the time, 10% with some crunch and 10% with a bit more grit than crunch!. Beautiful, lush, rich, delicious clean tones are what thrills me come playing time. However, cranking it up several hairs also tweaks my biscuit's!
I am not about distorted tones and Dimarzio's Class of 55's provide that wonderful, glassy, bell like tone great old strats are known for. I do believe many will find these pickups lacking in ooommph due to the glassy clean thing.
Of course, they haven't been made in many, many years and there doesn't seem to be a huge outcry for their return, so I'm assuming the True velvet, Red Velvet pickups have improved on the general tonality. Can't say as I've never tried any other Dimarzio (single coil) strat pickups. I do like the Virtual series!
Now that I've finally reached the dreaded old age syndrome, it's time to start letting things go. THe more that becomes a reality, the more I fight it. I talk a good game about letting things go, but when push comes to shove, I clam up and keep what few instruments I have left even closer. Crazy? Yes.....but that's where I am.
Okay. more for a different thread! Suffice to say? (for me anyway) I really like the Class of 55 strat pickup set. Great, clean, glassy tones. Position 2 and 4 are simply classic notch strat tones. Think Clapton's 'Let it rain', Dire straits "Sultans of Swing", et cet. These offer those great 'out of phase' tones in spades. The neck alone is pretty much everything one would want. Throaty, beefy, loverly!