Description
The ASB-6B is Seymour Duncan’s answer for 6-string bass players who want the snap of an active pickup without losing the organic warmth that made passive soapbars a classic. Sized to fit standard Phase I soapbar routs, it slots in as a direct replacement for a traditional Bartolini P2, making upgrades straightforward for anyone already running that footprint.
Inside, Duncan’s split-blade coil construction keeps every string balanced against the next, so nothing gets buried in a dense low-B-to-high-C spread. An onboard active preamp pushes more volume and presence than you’d get from a passive equivalent, while the voicing stays even across bass, mid, and treble — equally at home under a pick, fingerstyle groove, or slap attack. Tonal shaping is subtle rather than aggressive, giving you a neutral canvas that reacts naturally to your playing dynamics.
Because it’s active, battery life matters, and Duncan rates this pickup at roughly 1,000 continuous hours per set — plenty of runway before a swap. For players who want deeper EQ control, the ASB pairs well with Duncan’s STC-2 or STC-3 Tone Circuit preamps, letting you dial in precise bass, mid, and treble sculpting beyond what the pickup alone offers.
- Position: Bridge, 6-string bass
- Magnet: Ceramic
- DCR: 0 (active circuit)
- Cable: 2-conductor shielded
- Direct fit replacement for Bartolini P2
- Includes mounting and wiring hardware





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