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

The STC-3A is built exclusively for active pickups and delivers surgical EQ control optimized for their high output, while the STC-3P is designed to enhance passive pickups with clarity and articulation while preserving their organic character. Choose the STC-3A if your bass has active pickups; choose the STC-3P if you have passive pickups.

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-3P 3-Band Tone Circuit For Passive Pickups

$165.00
View Seymour Duncan STC-3P 3-Band Tone Circuit For Passive Pickups

Specs side by side

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

  • Purpose-built for active pickup circuits with optimized gain staging
  • Two trim pots allow fine-tuning of frequency contour characteristics
  • Slap Switch adds practical versatility for multiple playing techniques
  • Handles the high output of active pickups without saturation

Why choose Seymour Duncan STC-3P 3-Band Tone Circuit For Passive Pickups

  • Transforms passive pickup tone with clarity and articulation without losing organic warmth
  • Works with any bass featuring passive pickups—broader compatibility
  • Concentric knobs save control cavity space
  • Stereo jack and battery clip included for streamlined installation
Bottom line: If your bass already has active pickups, the STC-3A is the correct choice for optimized performance. If you have passive pickups and want to add active EQ control, the STC-3P is designed specifically for that purpose.

Frequently asked questions

Can I use either circuit with my bass?

No. The STC-3A requires active pickups to function correctly, while the STC-3P is designed for passive pickups. Using the wrong type will result in poor signal compatibility and tone.

Do both circuits support 18V operation?

Yes. Both the STC-3A and STC-3P can operate on a single 9V battery or two 9V batteries wired in series for increased headroom and dynamic range.

Which one preserves the original character of passive pickups?

The STC-3P is specifically voiced to preserve organic warmth while adding clarity and articulation to passive pickups, making it ideal if you want enhancement without radical tonal change.

Do both include a Slap Switch?

Yes. Both the STC-3A and STC-3P include a proprietary Slap Switch to enhance articulation and versatility across different playing techniques.

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