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Callaham Vintage Guitars - Handmade vintage reproduction electric guitars.

Carlson Amplification - Hand wired tube amps plus restoration and repair service.

Carlson Guitar Company - Handmade electric guitars.

Carvin - Factory direct music store.

CaseworX - A kit to build your own guitar.

Catalyst Instruments - Makes an electric guitar fashioned from a ceramic-graphite compound.

Chabot Guitars - Hand made classical guitars.

Chapin Guitars - Handcrafted acoustic and electric guitars.

Chrysalis Guitar Company - A collection of interchangeable parts to create a customized, portable guitar.

Cimarron Guitars - Custom acoustics and electrics.

Clark Amplification - Tweed era reproductions, EL34 & EL84 heads, and tube related parts.

Collings Guitars - Acoustic and archtop guitars.

Comins Guitars - Handcrafted archtop guitars.

C-tech/Pocket Rockit - Headphone amps with effects that plug right into your instrument.

Custom Ax Guitars - Also sells parts, makes repairs.