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JAM Pedals Rattler Bass

Rattler Bass


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  • Distortion monster for bass 
  • Amazing tones of great early ‘80s ProCo RAT® 
  • Open, dynamic and overdriven tube bass amp feel 
  • Toneful high gain distortion 
  • Fat, creamy sound and sustain 
  • Dynamic response 
  • Amp like performance 
  • Asymmetrical clipping circuit and carbon comp resistors 
  • Includes the legendary NOS LM308N chip 
  • Hand built and wired 
  • Level, Tone and Gain 
  • Hand painted snake artwork 
  • LED power indicator on and off 
  • True bypass 
  • All analogue 
  • Side mounted jack sockets 
  • Limited lifetime warranty 


The JAM pedals Rattler Bass is an unabashed distortion monster. JAM Pedals pulled out all the stops to make sure the Rattler Bass will get you all the amazing tones of great early 80s ProCo RAT® distortion boxes and put in the time and R&D to make it more responsive to your playing resulting in an open, dynamic, overdriven bass tube amp feel. 

The JAM Pedals Rattler Bass symmetrical clipping circuit, and of course, the legendary NOS LM308N chip, the featured star of this design, are the main ingredients of a great recipe resulting in the JAM Pedals Rattler shining through any rig, whether modern or vintage. 

Enjoy fat and creamy distortion courtesy of the devious snake. 

Click Here To View JAM Pedals Delay Rattler Bass Product Manual


  • Right footswitch: Engages the JAM Pedals Rattler Bass
  • Left footswitch: Engages the high-gain-stage
  • Level: Controls the output level
  • Tone: Adjusts the tone
  • Gain: Sets the gain level
  • Mix: Sets the blend ratio between the clean and overdriven signal

Component Listing and Tech Spec 

  • High quality components available throughout 
  • Asymmetrical clipping circuit and carbon comp resistors 
  • Includes the legendary NOS LM308N chip 
  • 9V centre negative power 
  • Current consumption* 
    • 5 mA bypass 
    • 6 mA engaged 
  • Battery: no 

*Current consumption checked with a Truetone mA meter reader 

Enclosure Dimensions 

  • Length: 110 mm / 4.3 in 
  • Width: 59 mm / 2.3 in 
  • Height: 31 mm / 1.2 in 


  • 285 g 

FX Pedal Planet Limited and FX Pedal Planet Online Store are proud to be UK dealers for JAM Pedals effects pedals.  If we do not have the JAM Pedals effects pedal required, please message us via the contacts page and we will do our best to get the product that you want at the very best price and service. 

What planet are you on - FX Pedal Planet

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Klarna is a smooth and safe way to get what you want today, and pay over time. Afterpay allows customers to pay in four interest free instalments, budget your spending and earn rewards when you shop.

UK Deliveries 

FREE 24 hour DHL tracked and signed delivery 

International Deliveries 

Despatched with DHL 

Fast deliveries and processing through customs 

For details, please click Deliveries and Charges

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