Seymour Duncan STC-2A 2-Band Tone Circuit For Active Pickups
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Seymour Duncan STC-2A 2-Band Tone Circuit For Active Pickups
In stock
- SKU
- 11993-01
Description
Seymour Duncan STC-2A 2-Band Tone Circuit For Active Pickups
The STC-2A is a high-headroom, low-noise active preamp engineered to deliver clean, articulate EQ control with minimal noise floor—ideal for players demanding transparent tone shaping and maximum dynamic range from their active pickup systems. This compact circuit board integrates seamlessly into existing control cavities and offers intuitive control layouts that respond precisely to finger input across the full frequency spectrum.
Electronics & Signal Path
Built as a 2-band active EQ preamp specifically designed for active pickups, the STC-2A maintains exceptional headroom and clarity even under heavy playing dynamics. The circuit powers from a single 9V battery housed in the control cavity, with the option to wire two batteries in series for even greater headroom and extended battery life in demanding sessions.
Control Architecture
The prewired harness provides dedicated bass and treble controls alongside a master volume control and blend control for versatile pickup mixing. Two small trim potentiometers on the circuit board allow users to preset the proprietary Slap Switch contour, enabling quick access to an alternative EQ voicing optimized for percussive playing techniques and dynamic articulation.
Key Features
- High-headroom, low-noise 2-band active EQ preamp
- Dedicated bass and treble tone controls
- Master volume control
- Blend control for active pickup mixing
- Proprietary Slap Switch with adjustable contour via onboard trim pots
- Prewired 3-knob harness for simplified installation
- Single 9V battery power with option for dual-battery series configuration
- Compact circuit board design fits standard control cavity routing
- Transparent signal path preserves pickup character and dynamics
The STC-2A delivers studio-grade tone control and switching capability in a format that integrates directly into active pickup systems without compromise to signal integrity or noise performance.
More Information
| Condition | New |
|---|---|
| Country of Manufacture | United States |
Reviews
At a Glance
The Seymour Duncan STC-2A is a compact 2-band active preamp that drops into your guitar's control cavity to deliver clean, articulate bass and treble control with a transparent signal path—no noise, no coloration. Built for players running active pickups who need studio-grade EQ shaping and switching on stage or in the studio, it offers high headroom for heavy dynamics, a Slap Switch for quick percussive voicing, and blend control to mix pickup outputs with precision. Choose it if you want transparent tone shaping that preserves your pickup's character while giving you real-time control over your entire frequency spectrum.
Who This Is For
Great for
- ✓ Studio Sessions
- ✓ Live Performance
- ✓ Extended Range
- ✓ Drop Tunings
Not the best pick for
- – Passive pickup systems
- – Vintage tone purists
Skill level: Intermediate · Advanced · Professional
Frequently Asked Questions
What's the difference between the STC-2A and passive tone circuits?
The STC-2A is an active preamp that requires a 9V battery and delivers a high-headroom, low-noise signal with dedicated bass and treble controls; passive circuits offer no EQ shaping and work without power. The STC-2A maintains clarity and dynamic range under heavy playing, making it ideal for studio and live work where tone control is essential.
Can I use this with passive pickups?
No, the STC-2A is designed specifically for active pickup systems. It will not work with passive pickups.
What's included in the box?
The STC-2A comes with the circuit board, a prewired 3-knob harness (bass, treble, master volume), blend control, and the ability to run on a single 9V battery or two in series for extended headroom and battery life. Installation requires standard soldering into an existing control cavity.
What is the Slap Switch contour?
The Slap Switch is a proprietary alternative EQ voicing optimized for percussive playing techniques; it's adjustable via onboard trim potentiometers so you can preset the contour to your preference and access it quickly during performance.
Will this fit my guitar's control cavity?
The STC-2A has a compact circuit board design that fits standard control cavity routing used in most guitars with active pickups, but you should verify your cavity dimensions before ordering.
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