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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
Platinum Matched Pair ECC33 Mullard 6SN7 CV2821 NOS Made in Great BritainExtremely rare Mullard UK ECC33 CV2821 (6SN7 sub with a bit higher gain), platinum matched pair (2 tubes) NOS New Old Stock The earliest type, extremely rare pan getter! Black anodes, cooling grid wings. The same date production. Carefully tested and precisely matched from a large batch of tubes with the same production date with 100V on anodes and 0V on grids and 250V on anodes and 6V on grids.
Extremely rare Mullard UK ECC33 CV2821 (6SN7 sub with a bit higher gain), platinum matched pair (2 tubes)
NOS - New Old Stock
The earliest type, extremely rare pan getter!
Black anodes, cooling grid wings.
The same date production. Carefully tested and precisely matched from a large batch of tubes with the same production date with 100V on anodes and 0V on grids and 250V on anodes and -6V on grids.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 2390 reviews
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Product Reviews
★★★★★ 5
Very great and durable option.
Style: for Saros 10R / Saros 20 / Qrevo CurvX
These parts are the perfect option when maintaining your robot vacuum. They fit the machine perfectly and are just as if not more durable than the company provided parts. Definitely recommended.
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Reviewed in the United States on March 28, 2026
★★★★★ 5
Quality at a great price
Style: for Saros 10R / Saros 20 / Qrevo CurvX
I was happy with the items, they did work great and I saved money buying them. Highly recommended.
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Reviewed in the United States on May 19, 2026
★★★★★ 5
They do what they are supposed to do
Style: for Saros 10R / Saros 20 / Qrevo CurvX
They fit the Saros 10R perfectly and do the job they are intended to do.
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Reviewed in the United States on April 9, 2026
★★★★★ 5
great deal on wear parts
Style: for Saros 10R / Saros 20 / Qrevo CurvX
perfect fit for my roborock saros 10r
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Reviewed in the United States on October 15, 2025
★★★★★ 5
Works and fits as advertised.
Style: for Saros 10R / Saros 20 / Qrevo CurvX
Arrived and functions as advertised.
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Reviewed in the United States on May 7, 2026