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Lot # 78 - KOSS Model MS503 Car Stereo Compact Disc Player – Sealed New Old Stock
| Opening Bid : | $ 5.00 |
| Pickup Instructions: | Pickups Friday & Saturday, May 15th-16th 10 AM- 2 PM - Street Parking Available - Stairs To Access Home - Bring Packaging & Helpers For Large & Fragile Lots - Pickers Sale On Site (Vintage computing, tools, books, etc) |
| Start Date/Time: | 05-May-2026 7:00:00 AM |
| End Date/Time: | 12-May-2026 8:17:00 PM |
| Current bid: |
$5.00 |
| Highest bidder: | Dem0s |
| This sale will end in: | |
| Bid for this item ! |
|
Description :
Factory‑sealed KOSS MS503 in‑dash car stereo compact disc player with digital AM/FM tuner, preserved in its original early‑2000s retail packaging. This model represents KOSS’s mobile‑audio line from the period, featuring bilingual English/French printing consistent with its distribution at the time. The MS503 delivers a 40‑watt system output (10 watts x 4 channels) and supports standard front‑loading CD playback along with AM/FM radio operation. Period documentation for this model includes the following technical specifications: 12V DC negative‑ground power supply 20 AM/FM station presets Seek/manual tuning and band selection Tone controls: ±10 dB bass at 100 Hz; ±10 dB treble at 10 kHz Front‑loading CD mechanism with standard playback functions Balance and fader controls The box remains fully sealed, with panels showing product features, branding, and system details. Packaging exhibits expected age‑related storage wear but remains intact and unopened, making this a strong example of true New Old Stock car audio from the early 2000s. Ideal for collectors of KOSS brand history, retro automotive electronics, or those curating period‑correct installations with original sealed packaging.
Dimensions : 11 in L x 9 in W x 4 in H
Auction History
Highest bidder is Dem0s
| Date | Bid | User |
|---|---|---|
| 08-May-2026 6:37:57 PM | $5.00 | Dem0s |
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