Coil Audio designs and hand-builds premium tube microphone preamps and studio gear in the USA for engineers who demand authentic vintage analog tone without compromise. Inspired by legendary American and European tube circuits, Coil Audio combines custom-wound transformers, NOS tubes, premium components, and meticulous craftsmanship to deliver rich harmonic depth, exceptional detail, and musical character. From the acclaimed CA-70 and CA-286 preamps to the modular PS6 platform, every product is built, tested, and voiced for professional recording, mixing, and mastering applications. Whether you're tracking vocals, drums, guitars, or adding analog color during mixdown, Coil Audio delivers timeless tube performance trusted by discerning studios and producers worldwide.