Citadel Electronics is a boutique guitar effects pedal company founded by Santiago Alvarez and Tommi Otsavaara, two engineers with backgrounds in designing guitar and bass amplifiers and effects. Based in Hong Kong, the company focuses on analog circuit design and builds its pedals around the sonic territory of classic tube amplification and overdrive.

The brand debuted its first lineup at Guitar Summit 2025, a series of seven pedals that includes the Bus Driver compressor, the Particle Drive overdrive, and the Overtuber tube driver. The pedals are pitched at players looking for analog tone shaping with an emphasis on build quality and practical, gig-ready feature sets.

Citadel Electronics has 7 products cataloged on Equipboard, including Overdrive Effects Pedals, Compressor Effects Pedals, and Fuzz Effects Pedals. Their gear is featured by 1 artist, with the strongest followings in Metal. Notable users include Shane Wesley.