Sony · Portable CD
The full Sony portable-CD lineage — the closest thing to a complete list that exists. One honest caveat up front: the authoritative source, ObsoleteSony, indexes the Japanese market. Sony used global model numbering for most of this run, so US buyers met the vast majority of these same numbers — the big early exception being the launch model, sold in the US as the D-5 (Japan: D-50). A clean US-only dataset with per-model MSRP has never been compiled; see the notes at the bottom for exactly where the record is solid and where it's thin.
| Model ▲ | Year ▲ | Category ▲ | Key features ▲ | Skip protection ▲ | US MSRP ▲ | Notes ▲ |
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What the historical record actually supports — and where it doesn't.
Model set, years, and format data are compiled from ObsoleteSony, which catalogs Japanese releases. Descriptions here are rewritten as terse spec tags, not copied.
From roughly 1990 on, Sony used the same model numbers worldwide, so US availability tracks this list closely. Pre-1990 and a handful of Japan-domestic SKUs are the exceptions.
The 1984 launch model was the D-50 in Japan and the D-5 in the US (1985). Early units shipped as "CD Compact Player" before the Discman nickname stuck.
Sony retired "Discman" for CD Walkman globally around 2000 — so most D-EJ and all D-NE models are technically CD Walkman, though the terms are used interchangeably.
Assigned by era, with specifically-documented generations flagged in-cell:
None 1984–91 (mechanical anti-vibration from the D-150 on, but no memory buffer).
ESP ~1992–97, first-gen buffer (~10 s; the D-465 pushed 20 s).
ESP2 ~1998, second-gen (up to ~40 s).
G-Protection 1999 on — a smarter error-recovery scheme, not just a bigger buffer.
Mid-90s budget, tuner and sports variants sometimes differ from the era default; treat those cells as best-fit, not gospel.
This is the field the record mostly failed to preserve. US launch prices survive for headline models but not the long tail. Documented anchors only:
D-5 / D-50 — $350 (1984–85)
D-Z555 — $500 (1989)
D-EJ01 — ~$350 (1999)
Everything else shows — rather than a guess. Rebuilding the rest means digging period Sony catalogs, Consumer Reports, and print ads — no one has aggregated it.
Beyond standard audio players: Car Discman (K/CK suffixes), My First Sony kids' units, Video CD players, portable CD-ROM drives, and the Data Discman e-book line. Filter by category to isolate pure audio.
For per-model photos, internals, and DAC/laser detail: ObsoleteSony, Walkman Central, and the Discman Wikipedia entry. Head-Fi and Stereo2Go forums hold the deepest collector knowledge.
Compiled Aug 2026 · data © ObsoleteSony (Japan-market) · spec tags & classification rewritten for this reference · verify US availability & pricing before purchase