Since 1954, Mercury Magnetics has been the benchmark for American-made audio transformers. Handcrafted in Canoga Park, California, Mercury transformers are trusted by amplifier builders, recording studios, and musicians worldwide for their unmatched tone, reliability, and performance. Beyond our legendary audio designs, we provide custom engineering services for a wide range of transformer applications — from audio to automotive to industrial and specialty power. Every Mercury product reflects our core belief: great engineering and great tone come from the same commitment to detail.