EL34 6CA7 Mullard Xf3 NOS Platinum Matched Quad Blackburn 1975 Rebranded Siemens
SKU: 60147520593

EL34 6CA7 Mullard Xf3 NOS Platinum Matched Quad Blackburn 1975 Rebranded Siemens

$562.27 $624.75
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Description

EL34 6CA7 Mullard Xf3 NOS Platinum Matched Quad Blackburn 1975 Rebranded SiemensOne perfectly matched quad of genuine EL34 6CA7 made by Mullard, Blackburn in 1975, Xf3 codes. They are rebranded Siemens (Siemens has never made any EL34!), NOS NIB, in original Siemens boxes. Top mica spacer with 10 support points, folded plates (stapled), two slots on plates, black base with central hole in guiding pin. I had a few dozen of these tubes (all the same date codes!!!), and all quads I have are carefully tested and matched by plate

One perfectly matched quad of genuine EL34 / 6CA7 made by Mullard, Blackburn in 1975, Xf3 codes. 


They are rebranded Siemens (Siemens has never made any EL34!), NOS NIB, in original Siemens boxes. 
Top mica spacer with 10 support points, folded plates (stapled), two slots on plates, black base with central hole in guiding pin. 


I had a few dozen of these tubes (all the same date codes!!!), and all quads I have are carefully tested and matched by plate current on my Metrix U61-B tester. Due to big number of tested tubes, they are matched within 5% or less!!! These are very strong examples, selected from big number of the same batch tubes!

It's really hard to find four practically exact genuine NOS Mullard EL34 with perfect prints and the same etched codes today, be fast and take this opportunity while they are still in stock!!!












This is a private listing and I do not give a warranty about the quality of the valves, and I do not accept returns. These valves are carefully matched and they are 100% in perfect working condition, I simply can not take responsibility for some users who do not know how to change tubes in their amplifiers.

If you buy any item on ebay from me and for if you are not fully satisfied for any reason or have any complains, please send me message before leaving negative or neutral feedback or opening a case. I really do care about your satisfaction and I’ll do my best to solve any kind of problem.

I collect tubes and tube gear for more then 35 years and I start to sell recently, please be sure to check my other items and visit my store for more rare NOS tubes and parts.

I have more than 250000 NOS tubes in stock and just small part is listed here, if you are interested in any specific tube or part, please send me message.

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SKU: 60147520593

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Erica
Carnegie, US
★★★★★ 5
My dog’s all-time favorite toy!!
My boxer mix LOVES LOVES LOVES the Chuck it ball! It is seriously his favorite toy. I think he likes how much give it has when he chomps on it, kind of like a dog stress ball. It does squeak when chewed but the squeak typically goes away in about a week likely due to saliva getting inside the ball. It bounces really well, my dog loves to catch it mid-bounce. Nice smooth rubber, easy to clean. It is very durable, we’ve never had one that broke. We usually only have to buy more when they go missing. The size is similar to a tennis ball. I’ve also noticed there is a difference between the mostly blue chuck it ball and the mostly orange one. The orange one is harder than the blue. My dog can tell the difference and only likes these blue ones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 19, 2024
O
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Octavia Schultz
Cuba, US
★★★★★ 5
Only kind my dog likes
The Chuck It rubber balls are the only kind of balls my dog will actually play with. He loves the squeaker in them and they’re very durable.
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Reviewed in the United States on September 19, 2025
A
Verified Purchase
Austin Harbaugh
Houston, US
★★★★★ 5
Long lasting squeaker for heavy chewing
The first squeaky toy to ever last more than a day for my heavy chewing dog. Got a 2pk 4 months ago. They squeezed for about 3 months, absolutely amazing. Got 6 more for Christmas and my pup is so happy.
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Reviewed in the United States on December 31, 2025
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Verified Purchase
J
Birmingham, US
★★★★★ 5
The best squeaker balls
My dog just can’t get enough squeaker balls! These Chuckit balls are durable and last.
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Reviewed in the United States on May 31, 2026
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Poiya
Dallas, US
★★★★★ 5
My girls love these
My puppies love this squeeky, bouncing ball. I bought a half dozen.
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Reviewed in the United States on September 28, 2025

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