ADD+ is a boutique effects pedal manufacturer based in İzmir, Turkey that has been building handmade analog signal processing pedals since 2005. The company centers its designs around true bypass switching and hand-assembled construction, producing a catalog that spans dynamics, gain, modulation, time-based effects, and utility units.

The lineup includes compressors and boosters such as the Compressor, FET-Boost, Booster, and Mid-Boost; overdrive and distortion pedals including the Bluesplayer series, Tube Drive, Soul, Bullseye, Ratortion, and the PI fuzz (available in Fuzz and DryWet variants); modulation effects such as Chorus, Phaser, Tremolo, and an Envelope filter; pitch units like the Octave and Bass Synth; the Delay V1 and V2; and preamps including the Mini Amp and Bass Station.

Beyond effects, ADD+ also produces utility devices such as an A/B Box, a Custom MIDI controller, a Power Supply, and the Pedalmod. Design, assembly, and warranty service are handled directly from the brand's workshop in the Çankaya district of İzmir, positioning it as a small-batch alternative to mass-produced pedal lines.

ADD+ has 5 products cataloged on Equipboard, including Fuzz Effects Pedals, Chorus Effects Pedals, and Amp & Cabinet Simulators.