Kenwood KX-400
Little is documented about the Kenwood KX-400. The record shows a cassette deck from Kenwood's KX series, positioned as a three-head design with Dolby B and C noise reduction, bias fine adjustment, peak level meters, auto tape selector, and soft-touch transport controls.
No measured performance figures appear in the surviving literature. That means no frequency response, no wow and flutter, no signal-to-noise ratio. Magazine coverage from the era is sparse. HiFI-Stereo (September 1980, p.53) noted that the Dolby HX system could significantly extend high-frequency capabilities, but the KX-400 doesn't surface in the surviving excerpts. Whether it was a short-production model or one that fell through the cracks of editorial coverage isn't clear.
On the used market, the KX-400 trades modestly. Market value ranges from $150-$300 depending on condition and functionality. eBay completed sales through early 2026 show a high of $120, a median of $96, and a low of $10. Condition and functionality drive the price more than collector demand does. Common maintenance issues include belt degradation, idler tire hardening, capstan motor wear, and dirty record/playback switches. All of that is standard for decks of this age.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.
Related Models
- Kenwood KF-6011
- Kenwood KX 1000D
- Kenwood KX 1003
- Kenwood KX 1030
- Kenwood KX 2020
- Akai CS-M40R (1983)
- Akai GX-7 (1970)
- Akai GX-8 (1975)
- Akai GX-F44R (1979)
- Akai GX-F71 (1982)