E-MU Systems Proteus 2500
keyboard
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Why this number?
The typical used price is the median of 18 used sales observed in the last 24 months, with outliers removed and the figure rounded. An observed sale is often the last asking price rather than a confirmed hammer price.
| Typical used price | €620 | median sold, rounded |
| Most sold between | €460–€680 | 25th to 75th percentile, same window |
| Window | last 24 months | the tightest of 90 days, 6 months and 24 months with 8 used sales |
| Sample | 18 used sales | thin data, treat as a rough guide |
| By condition | €480 | excellent, median of 9 sales, same window |
| Time to sell | — | only counted from listings we watch start to finish; not enough yet |
| Outliers | dropped | beyond 10× the product’s own median: bundles, parts, typos |
| All-time | €470 | 112 used sales, 2014–2026; not used for deals |
| Sales on record | 118 | all-time, all platforms |
Typical prices are rounded (to 5 / 10 / 50 / 100 by size, in whichever currency you read); asks and the chart are exact. As of 17 October 2026. Full method, including what each badge means
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.
eBay GermanyPrice history
Every recorded sale, one point each: 118 of them, placed by the day the ad went up. The line follows the middle of the sales around each point, with the middle half behind it, and breaks wherever nothing sold nearby. Condition is mixed, so some of the spread is a mint against a fair rather than the market moving.
Recent sales by listing date
18 used sales · last 24 months · middle half €460–€680 · thin
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 23 Sept 2026 | €535$600 as sold | very good |  United States | Reverb | Details |
| 5 Sept 2026 | €267$300 as sold | poor | United States | Reverb | Details |
| 11 Jun 2026 | €681$761 as sold | very good |  United Kingdom | Reverb | Details |
| 19 Feb 2026 | €249$280 as sold | excellent |  Japan | Reverb | Details |
| 8 Aug 2025 | €644$749 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 Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in August 2026 and October 2026.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 the last 50 of 118 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 3 May 2026 | €731$850 as sold | very good | United States | Reverb | Details |
| 25 Feb 2026 | €680$790 as sold | very good | Japan | Reverb | Details |
| 5 Aug 2025 | €601$699 as sold | very good | United States | Reverb | Details |
| 31 Jul 2025 | €667$775 as sold | excellent | United States | Reverb | Details |
| 10 Jun 2025 | €866$1,008 as sold | mint |   Greece | Reverb | Details |
| 8 Jun 2025 | €1,035$1,200 as sold | very good | United States | Reverb | Details |
| 3 Jun 2025 | €669$775 as sold | excellent | United States | Reverb | Details |
| 2 Apr 2025 | €679$790 as sold | very good | Japan | Reverb | Details |
| 17 Mar 2025 | €189$219 as sold | excellent | United States | Reverb | Details |
| 7 Jan 2025 | €485$564 as sold | excellent |  Canada | Reverb | Details |
| 19 Dec 2024 | €458$533 as sold | excellent |  South Korea | Reverb | Details |
| 16 Dec 2024 | €601$700 as sold | excellent | United States | Reverb | Details |
| 12 Dec 2024 | €245$275 as sold | excellent | United States | Reverb | Details |
| 5 Oct 2024 | €679$790 as sold | very good | Japan | Reverb | Details |
| 3 Oct 2024 | €515$599 as sold | excellent | United States | Reverb | Details |
| 22 Sept 2024 | €645$750 as sold | excellent | United States | Reverb | Details |
| 20 Aug 2024 | €687$800 as sold | excellent | United States | Reverb | Details |
| 16 Jul 2024 | €514$599 as sold | very good | United States | Reverb | Details |
| 3 Jul 2024 | €764$890 as sold | excellent | United States | Reverb | Details |
| 4 Jun 2024 | €1,202$1,400 as sold | excellent | United States | Reverb | Details |
| 17 Apr 2024 | €222$249 as sold | excellent | United States | Reverb | Details |
| 12 Mar 2024 | €558$650 as sold | very good | United States | Reverb | Details |
| 7 Mar 2024 | €824$960 as sold | excellent |  Finland | Reverb | Details |
| 15 Jan 2024 | €517$599 as sold | excellent | United States | Reverb | Details |
| 20 Dec 2023 | €438$510 as sold | very good | Japan | Reverb | Details |
| 30 Aug 2023 | €773$900 as sold | excellent | United Kingdom | Reverb | Details |
| 28 Aug 2023 | €408$475 as sold | very good | United States | Reverb | Details |
| 27 Aug 2023 | €859$1,000 as sold | very good | United States | Reverb | Details |
| 5 Jul 2023 | €942$1,092 as sold | excellent |  Switzerland | Reverb | Details |
| 28 May 2023 | €314$353 as sold | parts |  Germany | Reverb | Details |
| 18 May 2023 | €431$500 as sold | very good | United States | Reverb | Details |
| 15 May 2023 | €718$834 as sold | excellent |  Italy | Reverb | Details |
| 10 May 2023 | €318$370 as sold | very good | United States | Reverb | Details |
| 19 Apr 2023 | €514$599 as sold | very good | United States | Reverb | Details |
| 15 Apr 2023 | €517$599 as sold | excellent | United States | Reverb | Details |
| 1 Mar 2023 | €677$787 as sold | excellent | Italy | Reverb | Details |
| 4 Feb 2023 | €669$778 as sold | very good | United Kingdom | Reverb | Details |
| 1 Feb 2023 | €118$132 as sold | excellent | Canada | Reverb | Details |
| 28 Jan 2023 | €837$970 as sold | very good | United States | Reverb | Details |
| 20 Jan 2023 | €601$699 as sold | excellent | United States | Reverb | Details |
| 20 Dec 2022 | €559$650 as sold | very good | United States | Reverb | Details |
| 2 Dec 2022 | €1,355$1,578 as sold | excellent |  Slovenia | Reverb | Details |
| 4 Nov 2022 | €837$970 as sold | excellent | Germany | Reverb | Details |
| 7 Oct 2022 | €300$349 as sold | parts | United States | Reverb | Details |
| 28 Jun 2022 | €472$550 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.
Cheapest live: United Kingdom €1,030 · Germany €1,159 · before shipping
In one paragraph
The page's figures as one paragraph, assembled for quoting; not written by hand.
The E-MU Systems Proteus 2500 sold for a median of €620 over the last 24 months across 18 recorded sales, with most examples landing between €460 and €680. There are 2 listings live right now across eBay Germany, from €1,030 asking. Figures computed 17 October 2026 by Doirado from cross-platform listing data.