Seymour Duncan STC-2C-BO 2 Band Preamp EQ with Concentric Knobs

SKU:BBG 6602


  • 2-Band:
  • Treb/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.


Will this work in your Bass?

Frankie - Bass Tech

Ask Frankie, our Bass Tech.


Live Chat Call Me Email



  1. Treble/Bass Stack

Add active EQ to your P or J without any drilling with this 2-band onboard active EQ with stacked basstreble pot, and switchable treble frequency.

On board Tone Circuits add tremendous tonal versatility. This circuit enables you to boost or cut EQ at center frequencies voiced specifically for electric bass. Features low noise, low distortion and high headroom. Originally voiced for use with Blackouts for Bass but with its switchable treble frequency, works well for all musical styles and genres.The lows are deep, clear, and tight. There are two treble frequency centers to choose from. The lower setting is perfect for adding growl and bite to traditional P, J, and MM tones.

The higher setting provides crystal clear top end to modern-sounding, full-frequency basses, and when used with Blackouts for Bass gives punishing clarity without being brittle.This two-band active EQ is available in two configurations. This STC-2C-BO is mounted to a concentric potentiometer, and can replace a standard tone knob with no need for additional holes in the bass; while the STC-2S-BO separates the treble and bass controls onto two pots.

For nearly all basses, due to the selectable treble frequency. For use with active or passive pickups.

Package Includes

  • Includes all necessary mounting hardware
  • High-quality potentiometers on pre-wired harness
  • Battery Clip
  • Stereo Jack
  • Black Anodized, knurled, dome-style knobs.

Question: Where Can I Buy a Seymour Duncan STC-2C-BO 2 Band Preamp EQ with Concentric 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


Rate and Review this item
Verified Buyer
By Rick Carlos
Great price for a two band active preamp. Easy installation if you read through the instructions first. Installed this in my D-Lakin Bob Glaub P bass just to make it active for when I use a house backline and want tone control on the bass. Sounds great! Best Bass Gear has excellent customer service.
Verified Buyer
By Marck Cifuentes
Very good for the price I installed it on a Squire P-bass and it brought the sound to another level.