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2x 6N21B 6Н21Б Dual Mini triode amplify low frequency voltage / NOS / OTK / 2pcs

RetroSweetlo
(65)
Registered as a private seller
Consumer protection regulations resulting from EU consumer law are therefore not applicable. eBay buyer protection still applies to most purchases.
Seller's other items
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US $9.50
Approximately£7.03
Condition:
Opened – never used
“New Old Stock / Never used / Excellent condition”
2 available15 sold
This one's trending. 15 have already sold.
People are checking this out. 3 have added this to their Watchlist.
Postage:
US $9.70 (approx £7.18) Economy Shipping from outside US.
Located in: Kyiv, Ukraine
Delivery:
Estimated between Wed, 20 Aug and Mon, 8 Sep to 94104
Estimated delivery dates - opens in a new window or tab reflect seller's dispatch time, origin postcode, destination postcode and time of order receipt, and will depend on the delivery service selected and receipt of cleared paymentcleared payment - opens in a new window or tab. Delivery times may vary, especially during peak periods, and are an estimate only.
Returns:
30 days return. Buyer pays for return postage. If you use an eBay delivery label, it will be deducted from your refund amount.
Payments:
    Diners Club

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Seller assumes all responsibility for this listing.
eBay item number:388038321764
Last updated on 08 Jul, 2025 14:30:50 BSTView all revisionsView all revisions

Item specifics

Condition
Opened – never used
An item in excellent, new condition with no wear. The item may be missing the original packaging or protective wrapping, or may be in the original packaging but not sealed. The item may include original accessories. The item may be a factory second (i.e. it has a small flaw that does not affect the operation of the item such as a scratch or dent). See the seller's listing for full details and description. See all condition definitionsopens in a new window or tab
Seller notes
“New Old Stock / Never used / Excellent condition”
Brand
Soviet
Type
Triode
Model
6N21B

Item description from the seller

About this seller

RetroSweetlo

100% positive Feedback•301 items sold

Joined Jun 2019
Usually responds within 24 hours
Registered as a private sellerThereby, consumer rights stemming from EU consumer protection law do not apply. eBay buyer protection still applies to most purchases.
We are family-run business located in the heart of Ukraine — Kyiv.In our name, retro is for "vintage" and "sweetlo" is English pronunciation for the Ukrainian word "світло", which means "light".We ...
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Detailed seller ratings

Average for the last 12 months
Accurate description
5.0
Reasonable postage cost
4.9
Delivery time
5.0
Communication
5.0

Seller Feedback (71)

All ratings
Positive
Neutral
Negative
    • d***r (112)- Feedback left by buyer.
      Past month
      Verified purchase
      Nicely packaged and arrived safely. Items as described.
    • l***w (447)- Feedback left by buyer.
      Past month
      Verified purchase
      Everything perfect, highly recommended. Thank you very much!
    See all Feedback

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