Energized by two Electro-Harmonix 12AX7 tubes, the Tube Zipper''s patented moving filter tastefully adds controlled analog harmonics to your signal. In typical EHX fashion, each control can be set over-the-edge, generating a host of novel tones. Tron or Trill a la mode!

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Specifications

• True bypass using a mechanical relay
• Overdrive stage allows interaction with the envelope follower for hard hitting sweeps and frequency color
• Tron mode allows the filter to sweep smoothly, following your amplitude''s envelope
• Trill mode allows modulation to be added to the envelope as the filter sweeps
• Switchable up or down filter sweep directions
• Input gain boosts the signal before the filter drive
• Resonance control adjusts the Q or peak of the filter ranging up to self-oscillation
• Two Electro-Harmonix 12AX7 vacuum tubes included
• 12VAC-1000 power supply included

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WATCH: Tube Zipper - Demo by Peter Stroud - Envelope Filter/ Distortion