Expert Sleepers ES-4 SPDIF / CV Interface Eurorack Synth Module
keyboard
Has sold for €100 over 2020–2025, across 10 used sales. Too few in the last two years for a typical price today.
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Not enough sold data for a typical price.
For sale right now
The best-priced as cards, a row of them; every other ad as a line, by ask. Each ask is the seller’s own number; the platform’s mark opens the listing. Each one says when we last confirmed it at its source: the price and availability are from that visit, so check the marketplace before you go.
Nothing live right now on the platforms we track.
Price history
Every recorded sale, one point each: 10 of them, placed by the day the ad went up. Too few sales to draw a trend through them without inventing one, so the points speak for themselves. Condition is mixed, so some of the spread is a mint against a fair rather than the market moving.
Recent sales by listing date
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 26 Mar 2025 | €94$110 as sold | excellent |  United States | Reverb | Details |
| 17 Jun 2023 | €102$119 as sold | mint |   Netherlands | Reverb | Details |
| 28 Jan 2023 | €91$106 as sold | good |  United Kingdom | Reverb | Details |
| 16 Sept 2021 | €43$50 as sold | very good | United States | Reverb | Details |
| 26 Jul 2021 | €257$300 as sold | excellent | United States | Reverb | Details |
A date is the day the ad went up. Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in August 2026 and October 2026. A price is what the listing last asked, converted at that day’s rate.
Show all 10 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 10 Jul 2021 | €73$85 as sold | excellent |  Greece | Reverb | Details |
| 7 Jun 2020 | €116$130 as sold | very good | United States | Reverb | Details |
| 17 May 2020 | €95$110 as sold | excellent | United States | Reverb | Details |
| 7 Apr 2020 | €103$120 as sold | excellent | United States | Reverb | Details |
| 16 Feb 2020 | €111$129 as sold | excellent | United States | Reverb | Details |
A date is the day the ad went up. Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in August 2026 and October 2026. A price is what the listing last asked, converted at that day’s rate.
10 recorded sales of the Expert Sleepers ES-4 SPDIF / CV Interface Eurorack Synth Module from 2020–2025, all-time around €100. Too few in the last two years to quote a typical used price. Figures computed 19 October 2026.