AKG C391B Blue Line High-Performance Modular Small-Diaphragm Condenser
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Why this number?
The typical used price is the median of 8 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 | €190 | median sold, rounded |
| Most sold between | €170–€490 | the middle half alone; more than one kind of item sells under this name |
| Window | last 24 months | the tightest of 90 days, 6 months and 24 months with 8 used sales |
| Sample | 8 used sales | thin data, treat as a rough guide |
| Time to sell | — | only counted from listings we watch start to finish; not enough yet |
| Live asks | €464 | typical ask across 4 listings, 144% above typical used |
| Outliers | dropped | beyond 10× the product’s own median: bundles, parts, typos |
| All-time | €210 | 21 used sales, 2017–2026; not used for deals |
| Sales on record | 30 | 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.
eBay United States
Reverb
Price history
Every recorded sale, one point each: 30 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
8 used sales · last 24 months · middle half €170–€490 · thin
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 20 Jul 2026 | €479$555 as sold | excellent |   Italy | Reverb | Details |
| 2 Jul 2026 | €216$250 as sold | good |  United States | Reverb | Details |
| 2 Jul 2026 | €518$600 as sold | good | United States | Reverb | Details |
| 14 Apr 2026 | €516$600 as sold | very good | United States | Reverb | Details |
| 8 Sept 2025 | €168$195 as sold | very good | 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 Marketplaces do not publish the day a sale closed; each of these had sold by the time we recorded it, in August 2026 and October 2026.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 30 recorded sales
| Listed | Price | Condition | From | Platform | The listing |
|---|---|---|---|---|---|
| 8 Sept 2025 | €159$185 as sold | good | United States | Reverb | Details |
| 26 Jun 2025 | €172$199 as sold | very good | United States | Reverb | Details |
| 26 Nov 2024 | €173$200 as sold | excellent | United States | Reverb | Details |
| 25 Aug 2024 | €208$241 as sold | very good |  Germany | Reverb | Details |
| 18 Apr 2024 | €144$167 as sold | fair |  Canada | Reverb | Details |
| 21 Sept 2023 | €365$425 as sold | excellent |  Netherlands | Reverb | Details |
| 4 May 2023 | €322$373 as sold | new | Germany | Reverb | Details |
| 21 Jan 2022 | €332$385 as sold | excellent | United States | Reverb | Details |
| 21 Jan 2022 | €332$385 as sold | excellent | United States | Reverb | Details |
| 21 May 2021 | €215$250 as sold | good | United States | Reverb | Details |
| 25 Sept 2020 | €293$340 as sold | very good | United States | Reverb | Details |
| 26 Sept 2019 | €194$225 as sold | very good |  Australia | Reverb | Details |
| 25 Sept 2019 | €289$335 as sold | new |  United Kingdom | Reverb | Details |
| 31 Jul 2019 | €366$424 as sold | mint | Italy | Reverb | Details |
| 27 May 2019 | €168$195 as sold | excellent | United States | Reverb | Details |
| 2 Jul 2018 | €189$219 as sold | fair |  France | Reverb | Details |
| 27 Mar 2018 | €431$499 as sold | new | United States | Reverb | Details |
| 24 Jan 2018 | €377$438 as sold | new | United Kingdom | Reverb | Details |
| 18 Nov 2017 | €268$312 as sold | new | United Kingdom | Reverb | Details |
| 24 Oct 2017 | €206$239 as sold | mint | United States | Reverb | Details |
| 29 Sept 2017 | €454$528 as sold | new | Australia | Reverb | Details |
| 12 Jul 2017 | €206$239 as sold | mint | United States | Reverb | Details |
| 15 Mar 2017 | €428$499 as sold | new | United States | Reverb | Details |
| 23 Sept 2016 | €472$530 as sold | new | Australia | Reverb | Details |
| 6 Nov 2015 | €431$500 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: 
Japan €396 · United States €445 · Netherlands €578 · before shipping
In one paragraph
The page's figures as one paragraph, assembled for quoting; not written by hand.
The AKG C391B Blue Line High-Performance Modular Small-Diaphragm Condenser sold for a median of €190 over the last 24 months across 8 recorded sales, with most examples landing between €170 and €490. There are 4 listings live right now across eBay United States, Reverb, from €396 asking. Figures computed 19 October 2026 by Doirado from cross-platform listing data.