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Waveforms below were captured using the Soundcard Oscilloscope program (by Christian Zeitnitz) using its built-in signal generator to feed a 440Hz Sine Wave signal into my Neo-Classic 741 Overdrive using my Creative Sound Blaster X-Fi XtremeMusic soundcard's external Line-Out to Line-In audio cable ports. Note - The Gain potentiometer has a C500K Reverse Audio Log taper, just like all of the DOD 250 variants. The distortion gain control changes very quickly at first, then slowly changes for fine tuning.
  • Minimum Gain Waveform:
  • Quarter Gain Waveform:
  • Half Gain Waveform:
  • Three Quarter Gain Waveform: 
  • Maximum Gain Waveform: