Source: MiniDisc Wiki contributors · September 3, 2026 snapshot · CC BY 4.0, except where otherwise credited.
Attribution and changes
Adapted from “Sharp MD-ST521”. Links, layout and file names normalized; missing database fields restored; remote embeds replaced with links. Manufacturer manuals and separately credited photographs retain their original attribution.
| Name | MD-ST521 |
|---|---|
| Manufacturer | Sharp |
| Released | 1998/08 |
| Device type | portable |
| Recorder | Player |
| MDLP | No |
| NetMD | No |
| Hi-MD | No |
| Radio | No |
| Dimensions | 74.7 (width) x 16.3 (height) x 82.8 (depth) mm |
| Weight | 132g |
| ATRAC ver | Sharp 6 |
| Battery | Not recorded AD-T50BT |
| Battery notes | Not recorded |
| Sidecar (depr) | 1xAA |
| Voltage | 3.6, 5 |
| Power cable | Not recorded |
| Price (launch) | Not recorded |
| ¥35 000 | |
| - | |
| Inputs | Not recorded |
| Outputs | 3.5mm headphone |
| Control | Not recorded |
Available in MD-ST521-S (Platinum Silver), MD-ST521-A (French Blue), MD-ST521-P (Rose Pink)
Features: Clamshell disc loading. Backlit remote, 40 second shock memory. Can be connected to Sharp MD compo system for MD copying (analog) including track titles. Digital X-Bass. Autoplay option (MD starts playing upon insertion). Controls on back panel. Unique LiIon gumpack rechargeable cell that recharges in main unit with AC adapter, even while in use. (Kenwood model has carrying strap, Sharp does too?).
Content adapted from: Sharp Press Release Sharp Press Release (MiniDisc Wiki mirror) minidisc.org
Manuals
Repair
PCB front: 
PCB back: 
Optical pickup front: 
Optical pickup back: 
Photos
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Additional specifications and references
| Web Md | No (not NetMD) |
|---|---|
| Remote Page | |
| Atrac Ic | LR37811 / LR37811A (Sharp) |
| Manual | |
| Region | Japan |