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Darkglass Tone Capsule Guitar Preamp 

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The Tone Capsule is an unusual, but effective take on onboard preamplifiers. Its designed to respect your instruments natural character while expandi...Click To Read More About This Product

Available 06-09-2017

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See All Darkglass Onboard Preamps & EQ

An onboard preamp that doubles up on the mids for more natural flavor.

The Tone Capsule is an unusual, but effective take on onboard preamplifiers. Its designed to respect your instruments natural character while expanding exponentially the tonal possibilities.

How is it unique? It doesnt have a Treble control. The idea was Sheldon Dingwalls (Dingwall Guitars). He thought that making a Bass-Mid-Treble was too normal for his liking because everyone does it that way, so he suggested including a second mid control instead. This second control was configured to operate at the higher end of the spectrum, offering all the benefits a standard Treble control (increased clarity and definition when boosting) but with a more natural, less-harsh and noiseless operation.

  • 9V-18V operation: The Tone Capsule can function with either one or two batteries in series for 9V or 18V operation respectively (battery clips not included)
  • Bass: +-12dB @70Hz (potentiometer included)
  • Mids: +-12dB @500Hz (potentiometer included)
  • Hi Mids: +-12dB 2.8kHz (potentiometer included)

Give your guitar a new sound. Order today!


Review Snapshot

by PowerReviews
DarkglassTone Capsule Guitar Preamp

(based on 1 review)

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Reviewed by 1 customer

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(0 of 1 customers found this review helpful)


The ultimate upgrade for any active bass

By Barry

from Atlanta, GA.

Verified Buyer


  • Sounds awesome, perfect EQ points, quality pots,


  • Hassle to install (lots of wires to solder)

Best Uses

    Comments about Darkglass Tone Capsule Guitar Preamp:

    I have purchased two of these (first for an early 90's Ibanez SR800 w/ EMG BT pre) then my main bass -- an early 2000's Spector Euro, replacing an EMG BQC) and will soon buy a third for my Spector Euro 5 string w/ Haz pre. The Tone Capsules are in/out of stock at MF often (Darkglass is a small boutique company in Finland) but be patient. This pre is worth the wait and price!!

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