Pedal Diggers is a Japanese boutique guitar effects brand hand-built by Takashi Shiiba. The brand's stock-in-trade is carefully researched reinterpretations of classic circuits, typically loaded with rare NOS components and assembled in small quantities. Pedals are commonly badged with the abbreviation "Pd" and have been distributed through Japanese specialty dealers such as TC Gakki and Chuya-online, as well as internationally through Reverb.

The lineup leans toward vintage-flavored distortion, fuzz, and overdrive. A signature offering is the Mouse, a Pro Co RAT-style distortion modeled after an early "Whiteface" unit and built around period-correct parts like the LM308 op-amp and 1N914 diodes. Other designs include the Super Natural Overdrive, a Tube Screamer-style circuit assembled with Japanese-sourced components, along with smaller boost and drive boxes sold under the Pd name.

The brand sits within the wider Japanese handmade-pedal scene, where builders focus on tone-chasing vintage circuits rather than producing at scale. Pedal Diggers units tend to appear in limited batches and are often sought out by collectors looking for period-accurate takes on well-known stompbox designs.

Pedal Diggers has 1 product cataloged on Equipboard, including Overdrive Effects Pedals.