Boost - EF86 Tube Pedal
Boost - EF86 Tube Pedal
Boost - EF86 Tube Pedal
Boost - EF86 Tube Pedal
Boost - EF86 Tube Pedal

Boost - EF86 Tube Pedal

Regular price $249.00 $0.00

The BOOST is a boutique all-analog vacuum tube pedal using a pentode to deliver warm, clean gain for overdriving amplifier inputs or other pedals. A simple tone control lets you contour the result, helping to prevent muddiness and maintain punch. Primarily designed for studio use, this pedal offers superb signal-to-noise performance, implements true-bypass, and provides a buffered output capable of driving long cables or other pedals with ease.

Hand built in USA.


  • True bypass
  • 1 x EF86, all analog circuit
  • 24dB maximum gain
  • 40Hz to 4kHz bandwidth
  • 220k ohm input impedance
  • 600mV input, onset of clipping
  • 8Vrms output capability
  • 220V tube supply
  • Inverting polarity
  • 4.0" x 5.0" x 4.5"
  • Includes 9V supply, tube, 10-year warranty




  • "Great sounding all-tube gain that you can add in front of an amplifier or to other pedals on your board, to kick the front-end and drive 'em into more saturation and overdrive ... My little silverface Princeton which sounded killer too, I had the Princeton cranked up to about 7 or 8 and then just cranked up this pedal in front of it and nailed it. Was able to get the ah, you know, the Princeton to scream. It sounded really cool" - Pete Thorn


  • "I just wanted to let you know that the EF86 Boost pedal arrived and it’s wonderful. In combination with the EF86 tube in the preamp section of my Savage Audio Schatten 19, I can set the boost pedal to be 100% transparent or full on scorching. Thank you for a great boost pedal!"
  • "Amazing boost! I originally bought it to try in the effects loop on one of my amps, but when that didn't sound as expected (it wasn't advertised as being meant for that, I just wanted to try it for myself) I used it in the front of the amp after all my other pedals and all I can say is WOW! The EF86 tube adds a ton of character, clarity, and sparkle to any amp, and works amazing after other overdrives. A+"
  • "Got to say I have been enjoying the pedal quite a bit. Use it mostly as a boost/slight OD and it performs beautifully. Love the complexity of the ef86."
  • "The pedal plays like a dream, I love it!"
  • "I received the boost today. I wanted to say I’m impressed. Great tone, excellent boost."