Seymour Duncan SFX-01 Pickup Booster Effects Pedal Features:

• Add clean gain up to 24dB
  
• Fatten single-coil signals
  
• Heavy-duty steel chassis
  
• -120 dB noise with gain at 25dB
  
• <.1% distortion
  
• Fully discrete class A circuitry
  
• DC 9-12V battery
  
• 500K input impedance (when on)
  
• < 10K output impedance