Pioneer SE-405 (1973–1980)
A pair of open-back stereo headphones made in Japan during the mid-1970s, featuring individual volume controls and a focus on dynamic bass reproduction.
Overview
The Pioneer SE-405 is a pair of open-back stereo headphones manufactured by Pioneer in Japan from 1973 to 1980. These headphones were part of Pioneer's SE series lineup and are noted for their adjustable headband, black faux leather finish, and unique left and right individual volume controls. The SE-405 has appeared in used markets with original box and stand included in some listings, and while technical documentation is sparse, surviving units have appeared in flea markets and online sales globally.
Specifications
| Product type | Stereo headphones, Open headphone |
| Driver type | Dynamic |
| Frequency response | 20 Hz – 20 kHz (reported by multiple sources); conflicting report of 9 Hz - 40,000 Hz (Facebook post) |
| Impedance | 8 Ω (reported by hifi-wiki.com); conflicting report of 32 ohms (Facebook post) |
| Distortion factor | <0.8% |
| Max. input power | 1,000 mW |
| Features | Adjustable headband, Left and right individual volume control, Padded multi volume control |
| Color | Black (faux leather) |
| Manufactured in | Japan |
| Years of manufacture | 1973–1980 |
Reception & Use
Owners have noted the SE-405 delivers "crisp highs and resonant lows" with "extreme bass in your ears," emphasizing dynamic range and bass presence. One user described them as ensuring "full reproduction of the constantly present dynamic bass." They have been included in vintage headphone review discussions and compared to other models in Pioneer’s historic lineup.
Market
The SE-405 has appeared in used markets worldwide, selling for as little as $8 in flea market finds, while other listings have reached A$150 or R1600. Units are often sold as "Used - Good" condition and sometimes include the original box and stand. A known issue reported by owners is "Left Ear Crackle," suggesting potential aging in internal wiring or connections.
eBay Listings
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