Vintage Shure M64 Stereo Preamplifier – Professional Phono, Tape & Microphone Preamp – Made in USA Offered for sale is a classic Shure M64 Stereo Preamplifier, a highly versatile and professionally engineered component manufactured in the United States during the 1970s. Designed by Shure as a solution for magnetic phono cartridges, tape playback heads, microphones, and long cable installations, the M64 became a respected choice among audiophiles, broadcasters, recording studios, and serious music enthusiasts. Compact yet remarkably capable, the M64 provides switchable equalization for phono and tape playback, as well as a flat-response mode for microphone and buffer amplifier applications. Its exceptionally low noise floor, freedom from microphonics, and ability to drive long cable runs made it a favourite in professional installations. The robust all-metal construction and renowned Shure engineering have helped the M64 earn a reputation as one of the most dependable solid-state preamplifiers of its era. Technical Specifications • Manufacturer: Shure Brothers Inc., USA • Model: M64 Stereo Preamplifier • Type: Solid-State Stereo Preamplifier • Era of Manufacture: Circa 1970s to early 1980s Gain • Flat: +27.5 dB • Phono (RIAA): +34.5 dB • Tape (NAB): +37.0 dB Frequency Response • Flat: 20 Hz – 20 kHz ±2 dB • Phono: RIAA equalized, 40 Hz – 15 kHz ±2 dB • Tape: NAB equalized, 50 Hz – 15 kHz ±2 dB Performance • Total Harmonic Distortion: Less than 1% • Channel Separation: Better than 50 dB at 1 kHz • Hum and Noise: Better than 71 dB (Phono) • Channel Balance: Within 2 dB at 1 kHz Features • RIAA equalization for magnetic phono cartridges • NAB equalization for tape playback heads • Flat-response microphone preamplifier mode • High and low-level outputs • Capable of driving cable runs exceeding 15 metres (50 feet) • AC or optional DC operation depending on version The Shure M64 represents an era when professional audio equipment was built for reliability, flexibility, and longevity. Whether used in a vintage hi-fi system, recording setup, archive transfer chain, or broadcast installation, it remains a highly collectible and practical piece of classic American audio engineering. A superb opportunity to acquire a genuine vintage Shure component from the golden age of analogue sound. Please see detailed photographs for condition of item. They form part of the description and sale. Vintage electronic items are not guaranteed and the sale is final. Please note that we will pack her with our custom double box and bubble wrap system and we pack for the safety of the item not for economy