The Seymour Duncan STK-T3b Vintage Stack Telecaster Bridge Pickup, as the name suggests, is a stacked pickup. A stacked pickup is one pickup physically placed on top of another, giving it humbucking qualities such as noise-canceling, while still fitting into a single coil spot. This pickup is designed to maintain all of the twang of the original Telecaster, but in a noise-free pickup.
The Seymour Duncan STK-T3b has plenty of shimmer and shine in the highs, and lots of almost piano-like snap in the lows. The passive pickup uses an ALNICO 5 magnet for a slightly brighter tone and it’s also wax potted for reducing microphonic feedback and squeal. They’re installed with a color-coded 4 conductor lead wire.
If you have a neck pickup on your Tele, the Vintage Rhythm Stack (STK-T1n) is designed to pair nicely with the STK-T3b Vintage Stack Telecaster Bridge Pickup for a completely silent instrument. The silent operation, along with softer highs and boosted mids, should lend itself very well to the blues.
Dale Oliver from Blackhawk & Reba McEntire, Matt Hawking from The Edgar Winter Group, as well as many others, use this pickup. This pickup does not have a plastic cover; instead, the coil is covered in a black yarn.