Detail 01
Active (battery-powered) preamp
Onboard preamp sets output and voicing, so cable length and pot values barely change the tone.

Independent shopping perspective
Active humbucker sized for 7-string bridge position. For extended-range players running high gain who want a tight, noise-free low B.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Onboard preamp sets output and voicing, so cable length and pot values barely change the tone.
Detail 02
This is the tight, aggressive one in the EMG line — bridge pickup treble and attack, not warmth.
Detail 03
Wider bobbin and pole spacing to cover the extra string; won't line up under a 6-string bridge.
Detail 04
Hum stays down under heavy gain and near lighting rigs, where passives usually buzz.
Detail 05
No exposed pole pieces to adjust — height at the ring is your only tone-shaping move.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
No. The 7-string version is wider. Buy the 6-string 81 for a standard guitar.
Unplug the guitar cable when you're done — the cable jack is the on/off switch. Leaving it plugged in drains the battery.
Yes. Active pickups use 25K pots, not the 250K/500K in a passive guitar. Wrong pots make it dark and unresponsive.
The 81 is normally used at the bridge. Pair it with an EMG 60 or 85 in the neck if you want a full set.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.