Crimson Audio Transformers has been building premium audio transformers at reasonable prices since 1987, combining quality materials, expert craftsmanship, and proven designs for dependable professional performance. Serving recording studios, live sound, location audio, equipment manufacturers, and DIY builders, Crimson offers microphone input and output transformers, line and DI transformers, mic splitters, 500-Series solutions, custom OEM designs, and modern recreations of classic transformer circuits. The company is also known for its Mogaine inline microphone preamps and color-coded modification handles that give Shure SM57 and SM58 microphones distinct tonal characteristics. From one-off studio projects to large production runs, Crimson focuses on excellent sound, practical engineering, responsive delivery, and cost-effective solutions - making its products a smart choice for engineers seeking reliable transformer performance, creative tonal options, and American audio craftsmanship.