What genres and playing styles are these pickups best for?

The Blackouts excel in metal, hard rock, djent, and funk. Their high-output, aggressive character and focused attack are less suited to jazz, folk, and country playing styles.

Will these pickups fit my bass?

These are direct replacements for EMG 35-sized cavities. String spacing accommodates up to 2.70 inches (68.5mm), covering most 4-string configurations. If your bass currently has EMG pickups or uses that cavity standard, installation is a straightforward drop-in swap.

What kind of tone does the onboard EQ provide?

The active 9/5/9 EQ (Bass/Mids/Treble) delivers substantial bass and treble boost with a scooped midrange—the signature modern metal and hard rock character. This sculpts aggressive, punchy tone with controlled sustain and minimal noise out of the box.

How do these compare to EMG 35DC pickups?

Both are high-output active designs for heavy music, but the Blackouts offer a resonant peak at 8 kHz for sharper attack and articulation, plus a different EQ curve. The Blackouts are Seymour Duncan's take on aggressive active bass tone with their own sonic signature.

What's included in the set?

The ASB-BO-4S includes neck and bridge pickups with ceramic bar magnets, dual-blade design, onboard active EQ, and a two-conductor cable for simplified wiring.

Do I pay sales tax on this order?

Sales tax is collected only on orders shipped to California; orders shipped to any other US state are not charged sales tax at checkout when you buy direct from our website. At a typical 7% rate that is an estimated $19 less at checkout than the same listed price on a marketplace, which collects sales tax as the facilitator in most states. Buyers remain responsible for any use tax their state applies. Free US shipping and 30-day returns are included.

Seymour Duncan ASB-BO-4S Blackouts For Bass 4-String Pickup Set

The Seymour Duncan Blackouts ASB-BO-4S are high-output active pickups engineered for aggressive, punchy bass tone with minimal noise. These dual-blade design pickups deliver articulate low-end response and snappy midrange clarity, cutting through the mix on stage with modern aggression and precision. Direct replacement compatibility with EMG 35-sized cavities simplifies installation on compatible instruments.

Tone & Electronics

Built around ceramic bar magnets and a full 8.0 kHz resonant peak, these pickups attack with focused punch and controlled sustain that sits tight in a band context. The onboard active EQ (9/5/9 Bass/Mids/Treble) provides substantial bass and treble boost with a scooped midrange, giving you the signature modern metal and hard rock bass character that Blackouts are known for—road-tested and built to hold up night after night.

Installation & Compatibility

Maximum string spacing of up to 2.70" (68.5mm) accommodates most 4-string bass configurations without compromise. The two-conductor cable simplifies wiring, and direct EMG 35 cavity compatibility means drop-in replacement on instruments originally equipped with that standard.

Key Features

High-output active pickups
Dual-blade design
Ceramic bar magnets
Resonant peak at full 8.0 kHz
Active EQ: 9 Bass / 5 Mids / 9 Treble
Maximum string spacing up to 2.70" (68.5mm)
Direct EMG 35-sized cavity replacement
Two-conductor cable

The Blackouts ASB-BO-4S deliver the aggressive, noise-free tone that working bass players depend on in high-gain and heavy genres.

Condition	New
Country of Manufacture	United States

Best suited for	Metal, Hard Rock, Djent, Funk
Tonal character	High-output, aggressive, punchy low end, articulate mids, focused attack
Less specialized for	Jazz, Folk, Country (it will do it; instruments voiced for that style do it more easily)
Skill level	Intermediate / Advanced / Professional