Pedal Type: Multi-Mode Analog Distortion / Fuzz / Overdrive
Controls: Volume, Distortion, and Filter Knobs; 9-Way Rotary Mode Switch
Bypass Layout: True Bypass Switching
Power Requirements: 9VDC Negative Center Only (Battery power not supported)
Current Draw: 100 mA
Dimensions: 2.2” × 4.8” × 1.6” (55.9 mm x 121.9 mm x 40.6 mm)
The JHS PackRat houses a comprehensive analog historical archive, packing nine distinct variations of the highly influential ProCo RAT circuit into a singular pedalboard-friendly enclosure. Rather than utilizing digital modeling algorithms or simple clipping diode swaps, this utility pedal uses a complex internal digital runway switching system. This network directs the physical paths of 261 distinct discrete analog components across 40 individual internal switches. Selecting a mode mechanically reconfigures the entire internal circuit, physically altering resistor values, capacitor tolerances, operational amplifiers, and clipping styles to guarantee an exact hardware replication of the targeted era.
The structural interface maintains the simple, highly intuitive three-knob operational footprint of the original 1970s Kalamazoo design. Adjusting the Filter control mimics the traditional reverse-logarithmic taper, cutting treble response when swept clockwise to seamlessly smooth out sharp transients or warm up clean tube amplifiers. The master rotary selector opens up access to rare and highly sought-after vintage variants. This curated lineup spans from the 1979 Big Box original unit through the hard-clipping Turbo LEDs and Germanium diode variations, all the way to boutique modifications and the highly acclaimed discontinued JHS PackRat mod circuit layout.
Setting the rotary selector to the White Face or Turbo position creates a powerful, high-gain landscape optimized for modern rock, punk, and heavy metal tracking. The Turbo mode introduces internal clipping LEDs with a much higher forward voltage threshold, yielding a louder overall output and open headroom that prevents high-output humbuckers from choking the front-end signal line during rapid-fire rhythmic changes or sweeping lead segments.
Flipping the rotary knob over to the Landgraff MO'D position adapts the hardware for boutique overdrive applications across indie-rock, blues, or worship setups. This configuration implements an extra clipping diode for a highly asymmetrical gain structure, adding transparent, amp-like grit and note definition that responds dynamically to slight changes in fingerpicking or pick attack.
THIS PEDAL REQUIRES STANDARD 9V DC CENTER NEGATIVE POWER, CONSUMES 100MA, AND MEASURES 2.2" X 4.8" X 1.6". DO NOT USE MORE THAN 9V DC. DAMAGE MAY OCCUR AND YOUR WARRANTY WILL BE VOIDED.
Pedal Type: Multi-Mode Analog Distortion / Fuzz / Overdrive
Controls: Volume, Distortion, and Filter Knobs; 9-Way Rotary Mode Switch
Bypass Layout: True Bypass Switching
Power Requirements: 9VDC Negative Center Only (Battery power not supported)
Current Draw: 100 mA
Dimensions: 2.2” × 4.8” × 1.6” (55.9 mm x 121.9 mm x 40.6 mm)
The JHS PackRat houses a comprehensive analog historical archive, packing nine distinct variations of the highly influential ProCo RAT circuit into a singular pedalboard-friendly enclosure. Rather than utilizing digital modeling algorithms or simple clipping diode swaps, this utility pedal uses a complex internal digital runway switching system. This network directs the physical paths of 261 distinct discrete analog components across 40 individual internal switches. Selecting a mode mechanically reconfigures the entire internal circuit, physically altering resistor values, capacitor tolerances, operational amplifiers, and clipping styles to guarantee an exact hardware replication of the targeted era.
The structural interface maintains the simple, highly intuitive three-knob operational footprint of the original 1970s Kalamazoo design. Adjusting the Filter control mimics the traditional reverse-logarithmic taper, cutting treble response when swept clockwise to seamlessly smooth out sharp transients or warm up clean tube amplifiers. The master rotary selector opens up access to rare and highly sought-after vintage variants. This curated lineup spans from the 1979 Big Box original unit through the hard-clipping Turbo LEDs and Germanium diode variations, all the way to boutique modifications and the highly acclaimed discontinued JHS PackRat mod circuit layout.
Setting the rotary selector to the White Face or Turbo position creates a powerful, high-gain landscape optimized for modern rock, punk, and heavy metal tracking. The Turbo mode introduces internal clipping LEDs with a much higher forward voltage threshold, yielding a louder overall output and open headroom that prevents high-output humbuckers from choking the front-end signal line during rapid-fire rhythmic changes or sweeping lead segments.
Flipping the rotary knob over to the Landgraff MO'D position adapts the hardware for boutique overdrive applications across indie-rock, blues, or worship setups. This configuration implements an extra clipping diode for a highly asymmetrical gain structure, adding transparent, amp-like grit and note definition that responds dynamically to slight changes in fingerpicking or pick attack.
THIS PEDAL REQUIRES STANDARD 9V DC CENTER NEGATIVE POWER, CONSUMES 100MA, AND MEASURES 2.2" X 4.8" X 1.6". DO NOT USE MORE THAN 9V DC. DAMAGE MAY OCCUR AND YOUR WARRANTY WILL BE VOIDED.
