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Heavy Bat image
Heavy Bat image
Heavy Bat image
Heavy Bat image
Heavy Bat image
Heavy Bat image
Heavy Bat image

Heavy Bat

Contemporary spin on the classic Rat circuit with all options possible


Estimated availability: in less than a week


Heavy Bat is a modern take on the classic Rat circuit with modifications. The pedal has a true bypass and a rotary switch to select op-amp chips: NOS LM308, UD1408 (Soviet LM308 clone), TLC2272, and NOS 741. The EQ section has two options: classic Rat filter tone control and three-band EQ similar to Boss™️ HM-2. In addition, you'll get the clean blend controls and 8 clipping diodes options, and two of them could be selected footswitch.


  • Volume A/B - effect output level for each channel.
  • Filter - controls treble frequency response.
  • 3-Band Active EQ - allows to boost or decrease the amount of treble, mids, and bass.
  • Tone toggle switch - allows selecting between classic Rat tone control and HM-2 style EQ.
  • Distortion - controls the amount of drive.
  • Mode rotary switches - 8 diodes options for each channel: LED (2 red LEDs, like Turbo Rat), none (raw op-amp clipping), Si (silicon 1N914 like classic RAT), Soviet Si (silicon KD541A), Hybrid (Germanium and Silicon diodes), MOSFET (BS170 transistor, like Fat Rat), Ge (NOS soviet D9 germanium diodes, like Your Dirty Rat), BAT (BAT85 Schottky diodes).
  • Op-Amp rotary switch - 4 chip modes: Classic (LM308), Soviet (UD1408), Modern (TLC2272), Ancient (741).
  • LED brightness trimmers - placed on the PCB trimmers allow you to adjust the status LED brightness for each channel.

Power supply

9V DC adapter (Boss-style negative center) not included. No batteries. They are bad for the environment 🌲.

Voltage: 9V

Current draw: 7.0 mA


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Lifetime Warranty - feel free to contact us if you have any troubles with a pedal!