Thunder Pup by Bigfoot Engineering

The Thunder Pup by Bigfoot Engineering is a medium gain guitar pedal designed to deliver classic British overdrive tones. It features two settings: the Big Amp mode, inspired by the tones of Angus Young (AC/DC) and capturing the classic Marshall Plexi 4x12 stack sound, and the Little Amp mode, resembling a vintage open back 2x12 combo such as the Vox AC30 or the Marshall Bluesbreaker.

Key features and technical specifications include:
- All-analogue circuitry
- Hand-built in England using high-quality parts
- Rugged and lightweight die-cast aluminum enclosure
- Length: 119mm (4.69"), Width: 94mm (3.70"), Height: 30mm (1.18")
- Weight: 0.33 kg (0.73 lbs)
- Mono 1/4" input and output jack sockets (side-mounted)
- Industry standard 2.1mm center negative power supply socket (top-mounted)
- Power requirements: 9vDC power supply (no battery option), current draw > 5mA
- Gain pot (top left) for adjusting the amount of overdrive
- Volume pot (top right) for setting the output level
- Big Amp/Little Amp switch (middle) for toggling between classic stack and combo amp tones
- On/off footswitch (bottom right) available with true bypass or buffered bypass wiring options
- On/off indicator LED (top middle)

The Thunder Pup does not feature any EQ controls, as the tone has been meticulously crafted to provide the perfect sweet spot every time, allowing the character of any guitar to shine through and react flawlessly to the player's dynamics and guitar's volume controls.

Overall, the Thunder Pup is designed to provide high-quality crunch and lead guitar tones, making it a versatile tool for achieving classic overdriven guitar tones.