Keeley Electronics Java Boost Guitar Effect Pedal


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The Keeley Java Boost is a germanium based Treble Booster designed to give you classic tones from the '60s and '70s. It is NOT a clean boost.

The Keeley Java Boost must be used with a cranked amp that is overdriven or distorting a bit already. The more the amp and pedal are cranked, the more the creamy, beautiful, sustaining distortion there will be. It is a Treble Booster by design, not a typical overdrive or distortion pedal. That means, the higher the note played, the more it gets amplified... and then, by your amp, distorted. Bass notes get cut in two of the modes on the Java Boost!

It is most widely used with a tube amp set to a bit of overdrive or clipping. That is the key to getting a great sound from this pedal. For example, setting the java boost in front of a very clean amp with the volume on 1-2 will surely result in a fairly weak guitar tone! Set the amp for some breakup, then click the java on.
  • Hand Built in the USA
  • Uses the ultra rare Mullard OC44 transistor for gain
  • Modern Dallas Rangemaster Circuit
  • 3 way Switched Treble-Booster - Locking 3 way switch so your setting is not moved.
  • Stock Vintage Rangemaster (Center), Mid-boost (Right), and Full Range (Left)
  • Metal film parts for low noise
  • Low current draw (about 4mA)
  • Designed to be used with any modern negative tip positive sleeve 9V DC supply
  • True bypass

Get your Keeley Java Boost pedal from Sam Ash Direct today at the guaranteed lowest price from Sam Ash Direct with our 45-day return and 60-day price protection policy.

Things You Will Get:

  • Guitar Effect Pedal
  • Instruction Manual
Model Java Boost


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Java Boost Guitar Effect Pedal

All Keeley pedals include a one year parts and labor warranty.

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