Korg MONO/POLY MP-4 analog synthesizer — Synth Resale Value
Keyboards and SynthsWhat a used Korg MONO/POLY MP-4 analog synthesizer sells for on Reverb (median of 2 recent listings).
Korg MONO/POLY MP-4 analog synthesizer value — Used $2,695. Prices updated August 2026.
Live on eBay right now
Expired listings — price reference
KORG Mono/Poly MP-4 Vintage Analog Synthesizer w/Hard Case Tested from japan
Korg Mono/Poly MP-4 Analog Synthesizer 4-Voice 100V Tested Working w/ Hard Case
Korg Mono/Poly MP-4 monophonic/polyphonic Synthesizer w/ gig bag
KORG Mono/Poly MP-4 Vintage Analog Synthesizer with Hard Case
KORG Mono/Poly MP-4 Analog Synthesizer With Hard Case Tested Confirmed JapaneBay removes ended listings after ~90 days — we keep the prices. Look up finds current listings for the same item.
▍
Price data verified against · 1
Item details
- Brand
- Korg
- Make
- Korg
- Model
- MONO/POLY MP-4 analog synthesizer
- Year
- 1980–1981
- Finishes seen
- Blue
- Used range
- $2,495 – $2,695
- Sample size
- 2 listings
Korg MONO/POLY MP-4 analog synthesizer resale value
The used Korg MONO/POLY MP-4 analog synthesizer has a median Reverb asking price of $2,695, ranging from $2,495 to $2,695 across 2 current listings.
What drives the price
For a used synth, vintage analog vs digital, working keys/sliders, polyphony, and original PSU move the price most. Vintage and limited runs command a premium; player-grade and modified examples sell for less.
Price guide
What this actually trades for — sold values by condition vs. what sellers are asking today
| Condition | Value | Based on |
|---|---|---|
| Used | $2,695 | eBay sold comps |
| Live asking — low / typical / high | $1,590 / $2,190 / $4,000 | 10 live eBay listings ↗ |
Market check: As of August 12, 2026, 10 live eBay listings ask $1,590.00–$3,999.99 (median $2,190.00). Asking prices sit about 19% below the typical sold value of $2,695.00 — a window worth checking for buyers.
Frequently asked questions
- What color finishes are available for the Korg MONO/POLY MP-4?
- The Korg MONO/POLY MP-4 analog synthesizer has been seen in the Blue finish.
- What is the estimated resale value range for this 1980–1981 model?
- Based on current listings, the used range for the MP-4 is between $2,495 and $2,695.
- How many listings are currently available for this synthesizer?
- There are currently 2 listings available for the Korg MONO/POLY MP-4 analog synthesizer.
