From the manufacturer:
9-volt active humbucker for aggressive playing styles. Recommended for old school metal, garage, punk, thrash, drop tunings, and other heavy rock styles.
The "other" USA-made active humbuckers use unbalanced inputs in a differential preamp. The problem is, an unbalanced differential preamp is not very effective at cancelling hum. Our engineers figured out how to capture the tone that players want in an active design, but using balanced inputs. The result is 12dB to 14dB less noise, plus more lows, more highs, and more output. Simply put, Blackouts have more tone than other active pickups.
Blackouts are available in individual neck and bridge models, or as a two-pickup set. All versions come with all necessary mounting hardware, including pots, jack, and a battery clip.
For all humbucker guitars. The blade magnets make this pickup suitable for both humbucker and Trembucker string spacings."
Best videos/sound clips:
Here we have the positively epic 2012 Seymour Duncan 12-way bridge metal pickup shootout in all its glory! The top video is the "rapid fire" comparison (2 min total), and the bottom video is the 15 minute in depth comparison. I've included these videos here as the AHB-1is in the video (top row 2nd from the right). What's great is that you get to hear the same song being played on the same guitar by the same player. The licks are tasteful and it's mic'd well. Now as a critique, the mix is pretty heavy and with the bass and kick drum I find it hard to tell much about the quantity/quality of the bass output of these pickups. My take on this video though: All of these pickups do a good job – really you could play metal with any of these and be happy. Note: As this is an older video it is missing the Black Winter, Pegasus, and Nazgul bridge humbuckers.
The player is Keith Merrow and the song is "Pillars of Creation". Keith is playing a Strictly 7 Guitars "Cobra" Baritone 6-string 27.5" scale guitar through a Rhodes Colossus H-100 head.