Nonlinearcircuits 4SEQ
keyboard
Has sold for €90 over 2018–2026, across 13 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: 15 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 |
|---|---|---|---|---|---|
| 30 Jul 2026 | €102$115 as sold | excellent |  United States | Reverb | Details |
| 25 Nov 2024 | €106$118 as sold | excellent |  Australia | Reverb | Details |
| 6 Mar 2023 | €134$150 as sold | new | United States | Reverb | Details |
| 7 Jan 2023 | €71$80 as sold | very good | Australia | Reverb | Details |
| 5 Feb 2021 | €138$155 as sold | mint | 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 Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in October 2026. A price is what the listing last asked, converted at that day’s rate.
Show all 15 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 20 Nov 2023 | €70$79 as sold | excellent |  United Kingdom | Reverb | Details |
| 25 Sept 2023 | €71$80 as sold | excellent | United States | Reverb | Details |
| 11 Apr 2023 | €84$94 as sold | excellent | United States | Reverb | Details |
| 16 Aug 2021 | €89$100 as sold | excellent | United States | Reverb | Details |
| 3 Aug 2021 | €116$130 as sold | excellent | United States | Reverb | Details |
| 24 Jun 2020 | €89$100 as sold | new | United States | Reverb | Details |
| 25 May 2020 | €125$140 as sold | mint | United States | Reverb | Details |
| 3 May 2019 | €89$100 as sold | very good | United States | Reverb | Details |
| 22 Jul 2018 | €78$87 as sold | excellent | Australia | Reverb | Details |
| 20 Jan 2018 | €111$125 as sold | mint | 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 October 2026. A price is what the listing last asked, converted at that day’s rate.
13 recorded sales of the Nonlinearcircuits 4SEQ from 2018–2026, all-time around €90. Too few in the last two years to quote a typical used price. Figures computed 18 October 2026.