Pioneer CM-2S (?)
A twin-head electret microphone made in Japan—rare, oddly priced, and shrouded in mystery
Overview
The Pioneer CM-2S isn’t a speaker. At least, not according to the actual surviving units out there. Despite widespread confusion online—fueled by mismatched product listings and recycled spec sheets—the Pioneer CM-2S is a vintage stereo desktop microphone made in Japan, featuring a twin-head/2 channel design. Electret-type construction suggests it was designed for convenience and consistent performance without the need for external polarization voltage, making it compatible with standard mic inputs of the era. But beyond that, details vanish into silence.
Specifications
| Type | Electret type |
Collectibility & Value
One eBay listing reports a sale price of US $351.11, though the item was described as "untested" and "Has been in storage for years," which raises questions about functionality and market consistency. Another unit was noted to have a "broken base," a vulnerability that suggests the physical design may not have aged gracefully. Given the lack of verified working examples and technical documentation, collecting the CM-2S feels less like an investment and more like an archaeological dig—interesting, but with no guarantee of what you’ll power up.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.
Related Models
- Pioneer CS-811 (1979)
- Pioneer KH-3500 (1979)
- Pioneer CS-53 (1978)
- Pioneer CS-545 (1979)
- Pioneer CS-66 (1979)
- Akai AM-2850 (1975)
- Akai AP-206 (1975)
- Nakamichi BX-1 (1985)
- Acoustic Research research-ar-17 (1978)
- Acoustic Research AR-19 (1994)