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Sennheiser TB411 vintage new old stock audio transformer with possible ratios 1:15, 1:30 & 1:45 identical to TB421.

Sennheiser TB411 vintage new old stock audio transformer with possible ratios 1:15, 1:30 & 1:45 identical to TB421.

£197
MintReverb1mo ago

Sold by

K

Knobexploit Music Electronics

View on Reverb

Details

First Seen
28 September 2026
Last Seen
9 November 2026
Times Seen
32

About this listing

Sennheiser TB411 vintage new old stock audio transformer with possible ratios 1:15, 1:30 & 1:45 identical to TB421. is a used item in mint condition, listed on Reverb. The asking price is £197. It is offered by Knobexploit Music Electronics 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

For sale this vintage new old stock Sennheiser TB411 full range audio transformer with possible ratios 1:15, 1:30 and 1:45 (Bv 12-323). This one was found in German old stock from the early 1960's and has never been installed or used. It is identical to Sennheiser TB421 except for the fact that the TB421 has an additional copper shielding inside. Excellent transformer for MC step-up duty or use with microphones, top quality from the 1960's. Beautiful transformer from the golden age of German pro audio manufacturing. This packet contains: 1 x Sennheiser TB411 transformer with original box. Pictures are of example item, you will receive a fully identical pair from my stock. Feel free to ask any questions. Import duties are for the buyers account and are not included with buy it now price. Please inspect the pictures for the overall optical details. Business buyers within the EU zone with a valid VAT number please upload your VAT number to your Reverb profile for a VAT free purchase, suitable invoice for your business is available after sale. I will ship with Fedex international Economy to the continental USA, EU, Japan, Canada, Australia, Norway and Switzerland. Full value will be declared on customs documents, requests to lower value will be ignored. Shipping to the above mentioned locations only, no exceptions.