Shopping for used DJ equipment can be a gamble when a listing is honest about its faults. Two decks illustrate the coin flip: a single-deck Denon with a disc read issue and a dual-deck Vestax that powers on but has stuck trays. Both are sold as repair projects, so the decision comes down to what you plan to fix and what you're willing to pay.
Quick verdict
If you want the smaller repair commitment, the Denon DN-S700 at USD 100.00 is the lower-priced path and its fault is isolated to disc reading. If you want a dual-deck platform with fuller connectivity, the Vestax CDX-16 at USD 228.00 is the feature-rich choice, but you pay more and inherit tray and button issues.
Price and format comparison
| Product | Listed price | Price bar | Format | Condition highlights |
|---|---|---|---|---|
| Denon DN-S700 | USD 100.00 | Single CD/MP3 player | Disc error, discs not read but eject | |
| Vestax CDX-16 | USD 228.00 | Dual CD player | Power on only, trays don't open |
Where each product wins
The Denon takes the lower-cost, simpler-scope win: single deck, MP3 playback, and a specific disc-error symptom that still ejects discs. The Vestax takes the feature-depth win: dual trays, RCA phono/line inputs, analog stereo outputs, silver finish, and Japan origin, with a noted belt replacement.
Denon DN-S700 CD/MP3 Player DJ Equipment Disc Error Not Working Parts Only

This Denon is the lower-priced entry at USD 100.00 in a for-parts/not-working condition. Its current fault is a disc error: discs load but are not read, although they eject normally. That focused symptom is a reasonable starting point if you are willing to work at the transport or laser level, and the unit's MP3 playback would come back into play if the read is restored. The compact single-deck format keeps the project contained, but the not-working condition means there is no working playback to rely on before repair. If your goal is a low-cost parts donor or a simple CD/MP3 deck repair, this is the one to grab.
Vestax CDX-16 Dual CD Player DJ Equipment Japan Power On Only For Parts Junk

The Vestax CDX-16 is the more complete deck on paper and carries a USD 228.00 listed price. It is a silver dual CD player from Japan with RCA phono/line inputs (PGM A/B), analog stereo outputs for mix out and CD out A/B, and a standard 2U rack size. The unit powers on, but tray 1 and tray 2 do not open and some buttons feel stuck or frozen; no other functions were tested because of those issues, and visible scuffs and grime show age. A belt replacement is noted, hinting at prior service. The trade-off is clear: you pay the higher listed price and inherit a stuck-tray fault, but you also get a dual-deck chassis with fuller connectivity.
Final choice by use case
Choose the Denon DN-S700 if your project is budget-first: a single-deck MP3-capable unit with a narrower disc-read symptom and the lower listed price. Choose the Vestax CDX-16 if you need a dual-deck, silver rack-size unit with phono/line inputs, are comfortable with the $228 price, and are prepared to work on stuck trays and stiff buttons.