D-Sound (also known as D-Sound Effects) is a boutique guitar effects builder based in Saint Petersburg, Russia, specializing in hand-wired distortion, fuzz, and overdrive pedals. The brand draws heavily on the heritage of Soviet-era and classic Big Muff–style circuits, but reworks them with modern construction, expanded control sets, and reliability improvements aimed at players who want vintage tones without the maintenance headaches of original units.

The lineup centers on dirt pedals, including the Orion Distortion Fuzz — a Russian Big Muff–style circuit expanded to a six-parameter control section with mid, focus, boost, and sustain controls — the Fisherman High-Gain Distortion, the Sunny Distortion (a one-knob design inspired by the Sunn Model T amp), and the '73 Ram's Head Distortion, which reinterprets the early-'70s Ram's Head Big Muff. Pedals are marketed as hand-built and ship internationally direct from the maker.

D-Sound has 2 products cataloged on Equipboard, including Fuzz Effects Pedals. Their gear is featured by 1 artist, with the strongest followings in Rock. Notable users include J Mascis.