Cartec Audio is a British manufacturer of hand-built analogue studio outboard equipment, founded in 2009 by Liam Carter. The company started in London and later operated out of Manchester, building its products — down to the discrete op-amps and stepped attenuators — in-house rather than sourcing subassemblies from third parties.

The brand first drew attention with the EQP-1A, a faithful reproduction of the Pultec valve program equalizer, and has since expanded into the API 500-series format. Its catalogue includes the Pre-Q5 mic preamp/EQ module, the EQ-Pre-2A (a two-slot 500-series unit pairing a preamp with a Pultec-style EQ), the rack-format Pre-EQ-2A dual preamp/EQ, and the THC tone and harmonic control processor.

Cartec has built a niche reputation among project and commercial studios for affordable, boutique analogue gear that draws on classic Pultec and API-style topologies. Reviews in Sound on Sound, MusicTech, and SonicScoop have focused on the company's Pultec-derived EQ designs and its emphasis on real-world studio usability.

Cartec Audio has 3 products cataloged on Equipboard, including Effects Processors and Preamps. Their gear is featured by 2 artists, with the strongest followings in Electronic, Pop, and Hip Hop. Notable users include Noah "40" Shebib and Bibio.