Sequential Fourm 37-Key 4-Voice Polyphonic Synthesizer — Synth Resale Value
Keyboards and SynthsWhat a used Sequential Fourm 37-Key 4-Voice Polyphonic Synthesizer sells for on Reverb (median of 2 recent listings).
Sequential Fourm 37-Key 4-Voice Polyphonic Synthesizer value — Used $799. Prices updated August 2026.
Live on eBay right now
Expired listings — price reference
Sequential Fourm 37-Key 4 Voice Analog Synthesizer w/ Polyphonic Aftertouch
Sequential Fourm analog polyphonic synthesizer keyboard with case power supply
eBay 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
- Sequential
- Make
- Sequential
- Model
- Fourm 37-Key 4-Voice Polyphonic Synthesizer
- Finishes seen
- Black
- Used range
- $699 – $799
- Sample size
- 2 listings
Sequential Fourm 37-Key 4-Voice Polyphonic Synthesizer resale value
The used Sequential Fourm 37-Key 4-Voice Polyphonic Synthesizer has a median Reverb asking price of $799, ranging from $699 to $799 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 | $799 | eBay sold comps |
| Live asking — low / typical / high | $749.99 / $799.99 / $999.99 | 14 live eBay listings ↗ |
Market check: As of July 25, 2026, 14 live eBay listings ask $749.99–$999.99 (median $799.99). That's in line with the typical sold value of $799.00.
Frequently asked questions
- What is the typical price range for the Sequential Fourm?
- Used listings for the Fourm 37-Key are currently found in the $820 to $860 range.
- What color is this synthesizer typically offered in?
- The finish seen for this model is Black.
- How many listings are currently available for the Fourm?
- There are currently two listings available for the Sequential Fourm 37-Key.
