#1
i've researched both of these pickups and i would like to know if these pickups sound any different from one another when the tw is in humbucking mode
#3
No, Identical. It is sweet as a single as well. Well worth the extra money IMO
#4
the 81tw is exactly the same as the 81 in humbucking mode, just like the 89 is identical to the 85. Keep in mind that it's not a pop-in replacement, and it uses a 7 pin quikconnect rather than the standard 3 pin.