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SFX-03 Twin Tube Classic Preamp Pedal

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Boutique-quality tone for the working musician!

The SFX-03 Twin Tube Classic preamp pedal delivers all the gain and smooth tone you'd expect from a high-quality tube preamp. The high-plate voltage and 100% vacuum tube signal path allow the 2 - 6021 dual-triode tubes to operate at their fullest potential and provide maximum dynamic range. Two channels expand the tonal possibilities of this preamp even more, from glassy, smooth clean tones to warm crunch with tons of bite. Power supply included.


  • Uses two premium, military-spec, subminiature, USA-made Philips-Sylvania 6021 dual-triode tubes
  • High-plate voltage
  • 100% vaccum tube signal path
  • Two channels
  • True bypass
  • Fully encapsulated toroidal transformer for quiet operation
  • Heavy-duty steel chassis
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