Seymour Duncan STC-3M4 3-Band Preamp with 4 Knobs

SKU:BBG 5198


  • 3-Band: 1-Pickup, 4-Knob
  • VPP - Treb - Mid - Bass
In Production

Seymour Duncan is making these. We will have more of these within 2-4 weeks. Order it now, to reserve your place in line and we'll ship it the same day we receive it from Seymour Duncan.


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Control Configuration

  1. Volume/Slap Switch Push/Pull
  2. Treble
  3. Mid
  4. Bass

Tone Circuit designed for Music Man Stingray bass comes with a prewired 4-knob control harness.

The STC-3M4 is the 4-knob version of our Music Man Tone Circuit, and has a bass control, a treble control, a midrange control, and a master volume with a pushpull for our proprietary Slap Switch. The treble control can produce a wide ranging, extremely usable response that is brilliant, yet smooth without being brittle. The lows are deep, clear, and tight.

The mids range from ultra-smooth to punchy and all points in between. The Slap Switch is a pushpull located on the volume control. Pulling up on the volume knob will engage the special EQ contour voiced specifically for slap playing. The two small trim pots on the circuit board can be tweaked to preset the slap contour EQ just the way you want.Combine with our Music Man replacement pickups for a complete setup.

The STC-3M4 is specifically designed for Stingray basses, but will also work in any bass that is equipped with one passive pickup and has space for 4 control knobs (volumeslap switch, midrange, concentric basstreble control) and a single 9v battery in the control cavity.Two 9v batteries can be wired together in series for added headroom.

For Music Man® StingRay® basses and other basses with a single passive pickup. Will not work with 3-coil pickup.

Package Includes

  • Includes all necessary mounting hardware
  • High-quality potentiometers on pre-wired harness
  • Battery Clip
  • Stereo Jack
  • Black Anodized, knurled, dome-style knobs
Power Requirements 9Vdc (up to 36V may be used for increased headroom)
Current consumption 1.55mA @ 9V (current consumption is higher at higher voltages)
Maximum signal swing 2.7V @ onset of clip
Gain Unity *
Thd <0.01% *
Noise < -95dBv *
Tone control center frequency / Q / range +/-
Bass 20 Hz / .67 / 20dB
Midrange 578 Hz / .54 / 9dB
Treble 6.6 KHz corner / shelving / 20dB
Slap contour center frequency / Q / range
Bass Boost 83 Hz / 1.79 / +3 to +9dB
Midrange Cut 633 Hz / 1.12 / -3 to -11dB

* Noise & thd measurement taken with tone controls set to flat position

Question: Where Can I Buy a Seymour Duncan STC-3M4 3-Band Preamp with 4 Knob?

Answer: You can buy this from Best Bass Gear by Calling 877-839-3531 or Emailing us at or chatting with our Bass Techs


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