DLS Effects is a US-based boutique guitar effects manufacturer founded in 1999 by David Sestito, who continues to design and build the pedals. The company's catalog centers on modulation and time-based effects, with signature products including the RotoSIM and RotoSPIN rotary speaker simulators, the Versa Vibe univibe-style pedal, the Chorus Waves and Ultra Chorus modulation pedals, and the Echomaster, EchoTAP, and EchoTOUR delays.

Beyond modulation, DLS offers the TR1 Tap Tremolo, the Reckless Driver overdrive, and various boost and sustain circuits. The brand is known for pro-oriented, handwired designs aimed at touring and studio players, and the company has built custom one-off pedals for artists, most notably a Boost-Gain-Sustain (BGS) pedal built for Alex Lifeson of Rush that was used on the R40 tour.

DLS pedals have appeared on rigs associated with Rush, Heart, Aerosmith, Rolling Stones, Styx, Tesla, Smashing Pumpkins, Green Day, Lifehouse, Rascal Flatts, and Daughtry. The company also pledges a portion of its sales to St. Jude Children's Research Hospital and other charities.

DLS Effects has 8 products cataloged on Equipboard, including Univibe & Rotary Effects Pedals, Chorus Effects Pedals, and Tremolo Effects Pedals. Their gear is featured by 13 artists, with the strongest followings in Rock, Pop, and Blues. Notable users include Joe Don Rooney, Brad Avery, and Rivers Cuomo.