Vintage 1970s Sony ECM-99A Stereo Microphone 600 Ohm & Case NEW Old Stock Japan

This is a fantastic piece of PRISTINE audio history: a vintage Sony ECM-99A One-Point Stereo Electret Condenser Microphone.   This premium unit is the highly desirable factory-labeled 600 Ω (Ohm) Low-Impedance model, proudly manufactured by Sony Corporation in Tokyo, Japan.   Engineered with two distinct microphone capsules aligned inside a single body, it captures a true localized stereo image. The microphone splits seamlessly into a dual Left/Right 1/4 (6.3mm) audio cable output, making it highly prized for adding warm, authentic lo-fi texture to modern acoustic tracks, drum overheads, or vintage tape recorders.  Condition: Brand New Old Stock (NOS) / Pristine & Unused. The microphone has never been used.   This item comes beautifully preserved with its dual-layered packaging. It includes the textured, sleek black hardshell inner presentation container nested safely inside the original vintage brown graphic cardboard outer box.  Accessories: Comes complete with the authentic factory microphone stand mounting clip, case, cable wires, and the original printed Japanese language instruction manual.   Technical Specifications: Brand: Sony Corporation (Made in Japan) Model: ECM-99A Impedance: 600 Ohms (Ω) (Low Impedance) Outputs: Dual 1/4 / 6.35mm standard phone plugs Production Era: Manufactured during the mid-to-late 1970s