Blackspade Acoustics UM17B Tube Condenser Microphone with Thiersch Blue Line Capsule is a used item in excellent condition, listed on Reverb. The asking price is £1,905. It is offered by MYSTIKAL WEAPONS through Reverb. It is in our Microphones category. Used Gear Hunter first saw this listing on 28 September 2026 and last saw it on 9 November 2026. It has been seen 32 times in our scans. Prices are converted from the seller's currency when we scan the listing, so the amount you pay may differ slightly. The seller sets shipping, and import duty or VAT may apply, so check the final cost and the item's details on Reverb before buying.

From the seller

These were hand built for my studio. This is the top of the line version of this mic. These mics out perform the price by a wide margin. Hands down one of the best I have ever had in the building at any price range. Same circuit as the Telefunken ak47 but with a far superior capsule and better transformer. Equipped with Thiersch Blueline PVC capsule. Theirsch built capsules for Neumann back in the day and actually has the original machines from the factory. Google him, he's the guy. He produces all the U47 capsules for today’s models. The transformer is a BV8LP, a smaller version of the BV8 transformer used in the Neumann U47. Built by Oliver at Tab-Funkenwerk. He designed and built trasnformers for Telefunken until he passed away a few years ago. Do not confuse this with the cheap china capsule model. If it doesnt say UM 17B it's not the one. This is a whole other beast. They just used the same enclosure to get a good street price. Handmade microphone. No factories / no Chinese shams. Power supply and cable included. M49 based amplifier. Designed in USA. Handbuilt in Switzerland. These are very rare mics.

Blackspade Acoustics UM17B Tube Condenser Microphone with Thiersch Blue Line Capsule

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