Matthews Effects is a boutique guitar pedal company founded by Rick Matthews in 2013, based in Tri-Cities (Richland), Washington. Matthews got his start in pedal building through DIY kits from BuildYourOwnClone.com, with a DOD 250 Overdrive Preamp clone being his first build. His musical background, rooted in playing at his local church, informs the company's design philosophy of approaching problems from a different perspective than the rest of the industry. All Matthews Effects pedals are designed and assembled in the Pacific Northwest.

The company's lineup spans a range of effect types, each bearing a distinctive antique woodcut-style graphic. Their reverb offerings include the Astronomer Celestial Reverb, the Cosmonaut Void Delay/Reverb, and the Traveler Exploratory Reverb. On the drive side, the Architect features a three-band Baxandall tone stack for detailed EQ shaping, the Cartographer provides parametric overdrive, the Engineer targets bass players with a foundational overdrive, and the Whaler delivers an original fuzz circuit. For modulation, the Chemist Atomic Modulator combines chorus/vibrato, phaser, and octave modes, the Botanist offers chorus, phaser, tremolo, and vibrato, and the Conductor is an optical tremolo with multiple waveforms and tap tempo. The Technician is their most ambitious pedal, a dual-channel multi-effects unit combining reverb, delay, resonance filter, and looper with MIDI control.

Matthews Effects has 31 products cataloged on Equipboard, including Overdrive Effects Pedals, Reverb Effects Pedals, and Multi Effects Pedals. Their gear is featured by 10 artists, with the strongest followings in Rock, Pop, and Folk, World, & Country. Notable users include Rob Layton, Julien Baker, and Dustin Kensrue. Most Matthews Effects products fall in the mid-tier range — professional-grade without flagship pricing.