API 550B 500 Series 4-Band Equalizer Module
pro_audio
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Why this number?
The typical used price is the median of 12 used sales observed in the last 6 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 | €790 | median sold, rounded |
| Most sold between | €760–€1,400 | the middle half alone; more than one kind of item sells under this name |
| Window | last 6 months | the tightest of 90 days, 6 months and 24 months with 8 used sales |
| Sample | 12 used sales | thin data, treat as a rough guide |
| By condition | €770 | excellent, median of 9 sales, same window |
| Time to sell | — | only counted from listings we watch start to finish; not enough yet |
| Live asks | €1,154 | typical ask across 18 listings, 46% above typical used |
| Outliers | dropped | beyond 10× the product’s own median: bundles, parts, typos |
| All-time | €810 | 579 used sales, 2015–2026; not used for deals |
| Sales on record | 591 | 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 20 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.
1 local pickup ad in Germany, on Kleinanzeigen. Showing 1 local pickup ad in Germany, on Kleinanzeigen. Local pickup near you, in Germany: 1 ad on Kleinanzeigen.
Reverb
eBay Germany
12 more live · €1,154–€3,461 · typical ask €1,154 · most of these are new asks against a used typical
- €1,15446% over typicalnew ·
United States · eBay United States · confirmed 42 h ago - €1,15446% over typicalnew · United States · Reverb · confirmed 2 days ago
- €1,15446% over typicalnew · United States · Reverb · confirmed 2 days ago
- €1,15446% over typicalnew · United States · Reverb · confirmed 2 days ago
- €1,15446% over typicalnew · United States · Reverb · confirmed 2 days ago
- €1,15446% over typicalnew · United States · eBay United States · confirmed 42 h ago
- €1,15446% over typicalnew · United States · eBay United States · confirmed 42 h ago
- €1,15446% over typicalnew · United States · Reverb · confirmed 2 days ago
- €1,18951% over typicalnew ·
United Kingdom · Reverb · confirmed 2 days ago - €2,227182% over typicalvery good · United States · Reverb · confirmed 2 days agocheck this is the same unit
- €2,307192% over typicalnew · United States · eBay United States · confirmed 42 h agocheck this is the same unit
- €3,461338% over typicalnew · United States · eBay United States · confirmed 42 h agocheck this is the same unit
Price history
What it sold for, quarter by quarter, since Jan 2015: 571 sales in quarters with at least three, and the bars along the floor show how many each quarter. The shaded band is where the middle half of sales landed.
Recent sales by listing date
12 used sales · last 6 months · middle half €760–€1,400 · thin
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 25 Aug 2026 | €760$885 as sold | excellent | United States | Reverb | Details |
| 17 Aug 2026 | €1,782$2,000 as sold | excellent | United States | Reverb | Details |
| 24 Jul 2026 | €1,546$1,800 as sold | very good | United States | Reverb | Details |
| 10 Jul 2026 | €1,377$1,603 as sold | very good |   Italy | Reverb | Details |
| 30 Mar 2026 | €815$949 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 August 2026 and October 2026. A price is what the listing last asked, converted at that day’s rate.
Show the last 50 of 591 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 27 Jul 2026 | €752$875 as sold | excellent | United States | Reverb | Details |
| 16 Jul 2026 | €769$895 as sold | excellent | United States | Reverb | Details |
| 4 Jul 2026 | €3,006$3,500 as sold | excellent | United States | Reverb | Details |
| 3 Jul 2026 | €764$890 as sold | excellent | United States | Reverb | Details |
| 26 Jun 2026 | €739$860 as sold | excellent | United States | Reverb | Details |
| 9 Jun 2026 | €939$1,093 as sold | very good |  Finland | Reverb | Details |
| 1 Jun 2026 | €812$945 as sold | excellent | United States | Reverb | Details |
| 1 Jun 2026 | €770$897 as sold | excellent | United States | Reverb | Details |
| 13 Apr 2026 | €752$875 as sold | excellent | United States | Reverb | Details |
| 13 Apr 2026 | €752$875 as sold | very good | United States | Reverb | Details |
| 25 Mar 2026 | €773$900 as sold | excellent | United States | Reverb | Details |
| 25 Mar 2026 | €773$900 as sold | excellent | United States | Reverb | Details |
| 12 Mar 2026 | €770$897 as sold | excellent | United States | Reverb | Details |
| 12 Mar 2026 | €770$897 as sold | excellent | United States | Reverb | Details |
| 5 Mar 2026 | €1,804$2,100 as sold | very good | United States | Reverb | Details |
| 25 Feb 2026 | €1,589$1,850 as sold | excellent | United States | Reverb | Details |
| 24 Feb 2026 | €756$880 as sold | excellent | United States | Reverb | Details |
| 7 Feb 2026 | €772$899 as sold | excellent | United States | Reverb | Details |
| 29 Jan 2026 | €1,460$1,700 as sold | excellent | United States | Reverb | Details |
| 17 Jan 2026 | €1,245$1,450 as sold | good | United States | Reverb | Details |
| 5 Jan 2026 | €1,704$1,984 as sold | very good | United Kingdom | Reverb | Details |
| 31 Dec 2025 | €1,231$1,433 as sold | very good |  France | Reverb | Details |
| 12 Nov 2025 | €738$859 as sold | excellent | United States | Reverb | Details |
| 10 Nov 2025 | €772$899 as sold | excellent | United States | Reverb | Details |
| 6 Nov 2025 | €721$840 as sold | mint | United States | Reverb | Details |
| 6 Nov 2025 | €757$881 as sold | excellent | United States | Reverb | Details |
| 6 Nov 2025 | €757$881 as sold | excellent | United States | Reverb | Details |
| 30 Oct 2025 | €1,782$2,075 as sold | mint | United States | Reverb | Details |
| 20 Oct 2025 | €945$1,100 as sold | mint | United States | Reverb | Details |
| 20 Oct 2025 | €945$1,100 as sold | mint | United States | Reverb | Details |
| 5 Oct 2025 | €700$815 as sold | excellent | United States | Reverb | Details |
| 4 Oct 2025 | €1,390$1,618 as sold | excellent | United States | Reverb | Details |
| 18 Sept 2025 | €721$839 as sold | excellent | United States | Reverb | Details |
| 12 Sept 2025 | €730$850 as sold | excellent | United States | Reverb | Details |
| 12 Sept 2025 | €730$850 as sold | excellent | United States | Reverb | Details |
| 11 Sept 2025 | €1,631$1,899 as sold | excellent | United States | Reverb | Details |
| 4 Sept 2025 | €1,374$1,600 as sold | very good | United States | Reverb | Details |
| 22 Aug 2025 | €729$849 as sold | mint | United States | Reverb | Details |
| 22 Aug 2025 | €729$849 as sold | mint | United States | Reverb | Details |
| 19 Aug 2025 | €773$900 as sold | excellent | United States | Reverb | Details |
| 6 Aug 2025 | €1,353$1,575 as sold | very good | United States | Reverb | Details |
| 5 Aug 2025 | €686$799 as sold | very good | United States | Reverb | Details |
| 24 Jul 2025 | €939$1,093 as sold | excellent | France | Reverb | Details |
| 23 Jul 2025 | €837$975 as sold | very good | United States | Reverb | Details |
| 17 Jul 2025 | €816$950 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 August 2026 and October 2026. A price is what the listing last asked, converted at that day’s rate.
Cheapest live: United States €891 · United Kingdom €1,065 · 
Australia €1,100 · before shipping
In one paragraph
The page's figures as one paragraph, assembled for quoting; not written by hand.
Sellers are asking a median of €1,154 for the API 550B 500 Series 4-Band Equalizer Module today, 46% over the €790 it actually sells for (12 recorded sales, last 6 months; most sold between €760 and €1,400). There are 18 listings live right now across Reverb, eBay Germany, eBay United States, from €891 asking. Figures computed 20 October 2026 by Doirado from cross-platform listing data.