Manlay Sound is a boutique effects pedal builder based in Barcelona, Spain, founded and operated by Román Gil Romero. The company specializes in hand-wired, point-to-point circuits that faithfully recreate vintage fuzz, boost, and overdrive designs, relying on carefully selected NOS germanium transistors, Alpha potentiometers, and Neutrik hardware. Each unit is hand-signed and dated by the builder.

The lineup centers on reverent takes on classic 1960s British fuzz circuits. The Ronno Bender is a replica of the Sola Sound Tone Bender MK1, named in reference to Mick Ronson's use of the original during his tenure with David Bowie's Spiders from Mars, and features a bias switch for vintage or modern voicings. Other models include the Super Bender and The Sound, alongside various takes on germanium fuzz and treble booster topologies.

The brand has built a following in the boutique pedal community through its attention to period-correct components and small-batch construction, with distribution through specialist retailers such as Destroy All Guitars and through its own Reverb shop.

Manlay Sound has 15 products cataloged on Equipboard, including Fuzz Effects Pedals and Overdrive Effects Pedals. Their gear is featured by 1 artist, with the strongest followings in Rock and Jazz. Notable users include Henry Kaiser.