Well, if it is a jb, it will say on the bottom of the pickup. So when you go to install it you'll know. Pickups don't really have a sound. I mean nobody can tell the pickup people are using by just listening, because it mostly just fine tunes tones.
Agile AL3000
Douglas WRL90
J&D Strat
Squier Tele
Sammick TR2
Douglas Draco
Peavey JSX
Bugera V5
Quote by CarmenJuandeago
the only thing the pickup says is "seymour duncan"

Sounds like a JB!

You can't exactly tell from the clip because we have no idea what amp or settings are being used.

I believe most pickups have the name written on the back.

If you like the way it sounds though, it shouldn't matter what name it goes by.
Even my old '80 Mag has "The Mag" written on the back. Seymour Duncan have been doing it that way for quite some time. Ask to see a pic of the back.
Gilchrist custom
Yamaha SBG500
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100

Cathbard Amplification
My band
it probably is, most of the seymour duncans floating around out there are JBs, '59s, distortions.