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Seymour Duncan STC-3A 3-Band Tone Circuit For Active Pickups vs Seymour Duncan STC-3M3 3-Band Tone Circuits for Music Man (3 Knobs)

The STC-3A is a 4-knob dual-pickup system with maximum headroom flexibility (9V or 18V), while the STC-3M3 is a streamlined 3-knob single-pickup design optimized for Music Man Stingray upgrades. Choose the STC-3A for multi-pickup basses and ultimate headroom; choose the STC-3M3 for simpler installations and Stingray compatibility.

No sales tax on orders shipped outside California — total cost beats national retailers that charge sales tax in nearly every state.

Seymour Duncan STC-3A 3-Band Tone Circuit For Active Pickups

$165.00
View Seymour Duncan STC-3A 3-Band Tone Circuit For Active Pickups

Seymour Duncan STC-3M3 3-Band Tone Circuits for Music Man (3 Knobs)

$165.00
View Seymour Duncan STC-3M3 3-Band Tone Circuits for Music Man (3 Knobs)

Specs side by side

Seymour Duncan STC-3A 3-Band Tone Circuit For Active PickupsSeymour Duncan STC-3M3 3-Band Tone Circuits for Music Man (3 Knobs)
Price$165.00$165.00
BrandSeymour DuncanSeymour Duncan
Pickup TypeAny PositionAny Position
ConditionNewNew

Why choose Seymour Duncan STC-3A 3-Band Tone Circuit For Active Pickups

  • ✓ Supports dual active pickups with independent blend circuit
  • ✓ Optional 18V operation for increased headroom and dynamic range
  • ✓ Four-knob layout offers maximum control and flexibility
  • ✓ Prewired and ready to drop into compatible cavities

Why choose Seymour Duncan STC-3M3 3-Band Tone Circuits for Music Man (3 Knobs)

  • ✓ Specifically engineered for Music Man Stingray and single-pickup basses
  • ✓ Simpler 3-knob configuration reduces installation complexity
  • ✓ Includes pre-wired harness with quality potentiometers and anodized knobs
  • ✓ Minimal soldering required for straightforward install
Bottom line: Pick the STC-3A if your bass has dual pickups and you want maximum tonal flexibility and headroom options. Pick the STC-3M3 if you're upgrading a Stingray or single-pickup bass and prefer a streamlined, minimal-soldering installation.

Frequently asked questions

Which one fits a Music Man Stingray?

The STC-3M3 is specifically engineered for Stingray basses and compatible single-pickup installations. The STC-3A is designed for dual-pickup setups and may not fit Stingray cavities without modification.

Do both circuits offer the same EQ bands?

Yes, both offer 3-band active EQ (bass, midrange, treble) with low noise and high headroom. The main difference is that the STC-3A uses a 4-knob layout while the STC-3M3 uses 3 knobs with a stacked bass/treble control.

What's the headroom difference between them?

The STC-3A can operate at 9V or 18V (with two batteries wired in series) for increased dynamic range. The STC-3M3 description does not specify dual voltage operation, indicating it likely runs on standard 9V only.

How much soldering is required for each?

Both are prewired and ready to drop in, but the STC-3M3 is explicitly noted as requiring minimal soldering. The STC-3A's installation complexity depends on your bass cavity design and existing wiring.

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