Electro-Harmonix Riddle: Q Balls Envelope Filter For Guitar
pedal
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Why this number?
The typical used price is the median of 31 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 | €100 | median sold, rounded |
| Most sold between | €95–€110 | 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 | 31 used sales | thin data, treat as a rough guide |
| By condition | same as typical | excellent, median of 10 sales, same window |
| €95 | very good, median of 11 sales, same window | |
| Time to sell | — | only counted from listings we watch start to finish; not enough yet |
| Live asks | €130 | typical ask across 6 listings, 30% above typical used |
| Outliers | dropped | beyond 10× the product’s own median: bundles, parts, typos |
| All-time | €110 | 212 used sales, 2014–2026; not used for deals |
| Sales on record | 252 | 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 19 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.
Reverb
Price history
Every recorded sale, one point each: 252 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
31 used sales · last 24 months · middle half €95–€110 · thin
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 29 Aug 2026 | €98$110 as sold | excellent |  United States | Reverb | Details |
| 23 Aug 2026 | €82$95 as sold | very good | United States | Reverb | Details |
| 3 Aug 2026 | €94$110 as sold | good | United States | Reverb | Details |
| 11 Jun 2026 | €99$115 as sold | good | United States | Reverb | Details |
| 9 Jun 2026 | €122$142 as sold | very good |  United Kingdom | 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 252 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 30 Mar 2026 | €90$105 as sold | excellent | United States | Reverb | Details |
| 24 Jan 2026 | €97$113 as sold | mint | United Kingdom | Reverb | Details |
| 12 Dec 2025 | €129$150 as sold | excellent | United States | Reverb | Details |
| 5 Nov 2025 | €103$120 as sold | very good | United States | Reverb | Details |
| 25 Sept 2025 | €85$99 as sold | very good | United States | Reverb | Details |
| 6 Sept 2025 | €99$111 as sold | mint | United States | Reverb | Details |
| 27 Aug 2025 | €78$91 as sold | very good |  Switzerland | Reverb | Details |
| 4 Aug 2025 | €97$113 as sold | very good | United Kingdom | Reverb | Details |
| 24 Jul 2025 | €161$188 as sold | excellent |  Australia | Reverb | Details |
| 21 Jul 2025 | €107$124 as sold | mint | United Kingdom | Reverb | Details |
| 11 Jul 2025 | €107$120 as sold | excellent | United States | Reverb | Details |
| 11 Jun 2025 | €137$153 as sold | excellent |   Denmark | Reverb | Details |
| 23 May 2025 | €82$95 as sold | very good | United States | Reverb | Details |
| 13 May 2025 | €91$106 as sold | excellent | United Kingdom | Reverb | Details |
| 9 May 2025 | €99$115 as sold | excellent | United States | Reverb | Details |
| 6 May 2025 | €86$100 as sold | very good | United States | Reverb | Details |
| 2 May 2025 | €99$115 as sold | very good | United States | Reverb | Details |
| 10 Mar 2025 | €99$111 as sold | mint | United Kingdom | Reverb | Details |
| 28 Feb 2025 | €113$126 as sold | excellent | United States | Reverb | Details |
| 27 Feb 2025 | €146$170 as sold | mint |  Belgium | Reverb | Details |
| 10 Feb 2025 | €102$119 as sold | excellent | United States | Reverb | Details |
| 22 Dec 2024 | €111$129 as sold | good | United States | Reverb | Details |
| 7 Dec 2024 | €108$125 as sold | very good | United States | Reverb | Details |
| 6 Dec 2024 | €103$120 as sold | very good | United States | Reverb | Details |
| 2 Dec 2024 | €122$142 as sold | mint | United Kingdom | Reverb | Details |
| 5 Nov 2024 | €113$132 as sold | good |  Canada | Reverb | Details |
| 7 Sept 2024 | €122$142 as sold | excellent | United Kingdom | Reverb | Details |
| 6 Sept 2024 | €109$127 as sold | very good | United States | Reverb | Details |
| 25 Aug 2024 | €86$100 as sold | excellent | United States | Reverb | Details |
| 19 Jul 2024 | €103$120 as sold | very good | United States | Reverb | Details |
| 18 Jul 2024 | €86$100 as sold | very good | United States | Reverb | Details |
| 9 Jul 2024 | €73$85 as sold | good | United States | Reverb | Details |
| 12 Jun 2024 | €94$110 as sold | good | United States | Reverb | Details |
| 29 May 2024 | €82$95 as sold | excellent | United States | Reverb | Details |
| 15 May 2024 | €158$183 as sold | very good | United States | Reverb | Details |
| 1 May 2024 | €112$125 as sold | mint | United States | Reverb | Details |
| 28 Apr 2024 | €99$111 as sold | mint | United Kingdom | Reverb | Details |
| 17 Apr 2024 | €76$85 as sold | good | United States | Reverb | Details |
| 11 Apr 2024 | €103$120 as sold | very good | United States | Reverb | Details |
| 10 Mar 2024 | €116$135 as sold | excellent | United States | Reverb | Details |
| 20 Feb 2024 | €94$110 as sold | excellent | United States | Reverb | Details |
| 16 Feb 2024 | €104$121 as sold | very good | United States | Reverb | Details |
| 8 Nov 2023 | €125$145 as sold | mint | United States | Reverb | Details |
| 12 Sept 2023 | €116$135 as sold | excellent | United States | Reverb | Details |
| 12 Sept 2023 | €86$100 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 €100 · United States €127 · 
France €165 · before shipping
In one paragraph
The page's figures as one paragraph, assembled for quoting; not written by hand.
The Electro-Harmonix Riddle: Q Balls Envelope Filter For Guitar sold for a median of €100 over the last 24 months across 31 recorded sales, with most examples landing between €95 and €110. There are 6 listings live right now across Reverb, from €100 asking. Figures computed 19 October 2026 by Doirado from cross-platform listing data.