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Seymour Duncan STC-2ASB Fundamental 2-Band Tone Circuit For Active Pickups vs Seymour Duncan STC-2PSB Fundamental 2-Band Tone Circuit For Passive Pickups
The STC-2ASB is an active preamp for basses with active pickups, while the STC-2PSB is a passive tone circuit designed for passive pickup systems. Choose the STC-2ASB if your bass has active pickups; choose the STC-2PSB if you're working with passive pickups.
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Seymour Duncan STC-2ASB Fundamental 2-Band Tone Circuit For Active Pickups
Seymour Duncan STC-2PSB Fundamental 2-Band Tone Circuit For Passive Pickups
Specs side by side
| Seymour Duncan STC-2ASB Fundamental 2-Band Tone Circuit For Active Pickups | Seymour Duncan STC-2PSB Fundamental 2-Band Tone Circuit For Passive Pickups | |
|---|---|---|
| Price | $165.00 | $165.00 |
| Brand | Seymour Duncan | Seymour Duncan |
| Pickup Type | Any Position | Any Position |
| Condition | New | New |
Why choose Seymour Duncan STC-2ASB Fundamental 2-Band Tone Circuit For Active Pickups
- ✓ Designed specifically for active pickup systems
- ✓ Operates on single 9V battery with option to series two for extra headroom
- ✓ Minimal control cavity footprint with just three knobs and one battery
- ✓ Low noise and high headroom ideal for studio and live fretless work
Why choose Seymour Duncan STC-2PSB Fundamental 2-Band Tone Circuit For Passive Pickups
- ✓ Built for passive pickup systems without requiring batteries
- ✓ Warm, harmonic-rich tone suited to jazz and funk styles
- ✓ Versatile EQ shaping across diverse playing contexts
- ✓ Proven Steve Bailey signature fretless design with decades of real-world performance
Frequently asked questions
What's the main difference between these two circuits?
The STC-2ASB is an active preamp that amplifies and shapes the signal from active pickups using a 9V battery. The STC-2PSB is a passive tone circuit designed to work with passive pickup systems without requiring external power.
Do I need to know which type of pickups my bass has?
Yes, this is critical. Check your bass's current pickup system: if it has active pickups with built-in electronics, use the STC-2ASB; if it has standard passive pickups, use the STC-2PSB. Choosing the wrong type will not work with your instrument.
Which is better for jazz and fretless playing?
Both are marketed for jazz and fretless bass. The STC-2ASB excels with active pickups offering articulate, low-noise response, while the STC-2PSB provides warm, harmonic-rich tone with passive pickups. Your choice depends on your bass's existing pickup type, not the style.
Will either of these require major modifications to my bass?
The STC-2ASB requires a 9V battery cavity and three control knobs plus blend control. The STC-2PSB description mentions it's part of a broader Fundamental Fretless system. Consult your bass's wiring compatibility before purchasing either circuit.