Oh, man; this myth must be the hardest to die of the whole music industry... specially when the T-Top and the 490R are polar opposites. The short A5 modded 490R actually sounds BETTER than the T-Top when put in the bridge position, but in the neck there's simply no comparison. Night and day...
Those are asian-made, not worth much hard-earned coin.
They might sound OK if you change their baseplates with nickelsilver ones (assuming they're physically compatible) and magnets to Alnico 2.
HTH,
Well, the ones from late '70s seem to have a higher tonal quality than nowadays', although the newer ones are more than decent, specially modded with any alnico magnet but the stock one.
Alnico 4 is not part of the official list of the MMPA, the reason being explained on pag. 3 in the MMPA Standard No. 0100-00 document, and I quote:
Alnico 4 falls into the (b) and (c) paragraphs. IIRC, A4 is a developement of Arnold Industries.
MAGNETIC MATERIALS PRODUCERS ASSOCIATION
8 SOUTH...
There are a LOT of current production items and accessories that are NOT listed. Not to mention that half of the published information is wrong and the other half's simply not true.
Gibson's website have always sucked donkey balls, and with time's not getting any better.
Modded '59 sets' been the most successful overall, covering from high-end custom-made instruments to humble pawnshop Epis in my over fifteen years as a moonlighting Guitar tech.
I currently use an A3n/A2b-modded, nickel-covered '59 set with my ES-339, which is my main axe for my Smooth Jazz...
Unless they got a shipping of 3-strand by mistake or unexpected unavailability, so there's not actual record of it, Gibson never sourced 3-strand braided wire. Never have, probably never will.
Does my "of course" answer makes more sense now? Forum personalities... I'm sure the irony of your...