Vaderin is a boutique guitar effects pedal builder based in Pennsylvania, founded by Chris Jahnle and operating under the tagline "Custom Audio Machines." The company specializes in fuzz, distortion, and harmonic percolator-style circuits, often built around hand-selected NOS germanium transistors and offered with clipping selection switches.

The brand is best known for its take on the Interfax Harmonic Percolator circuit, with the HP-X positioned as a vintage-style harmonic percolator updated for modern reliability. The lineup also includes the SAF Percolator and other percolator variants such as the Heartbeat, Racer-X, and Bulldozer, along with fuzz and dirt boxes like the Cherry Fuzz 'Stainer, Gloopy Goblin Horror Fuzz, Low Hum Fuzz, Total Trash, Colossus, Super Ram, Bolt+, Laser I, Radio Dirtman, and the Tone Fox overdrive/distortion.

Vaderin operates primarily as a small-batch, direct-to-consumer builder, selling through its own site and Reverb, with select retail presence through outlets like Guitar Center. The pedals are typically housed in artwork-forward enclosures and aimed at players seeking vintage-flavored saturation, octave harmonics, and gated fuzz textures.

Vaderin has 1 product cataloged on Equipboard, including Fuzz Effects Pedals.