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Description
EL34 6CA7 Mullard Xf3 NOS Platinum Matched Quad Made in Blackburn, 1974For sale is one perfectly matched quad (4 tubes) of genuine EL34 6CA7 made by Mullard, Blackburn in 1974, Xf3 codes. Top mica spacer with 10 support points, folded plates (stapled), two slots on plates, black base with central hole in guiding pin. I had few 50 pcs boxes 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
For sale is one perfectly matched quad (4 tubes) of genuine EL34 / 6CA7 made by Mullard, Blackburn in 1974, Xf3 codes.
Top mica spacer with 10 support points, folded plates (stapled), two slots on plates, black base with central hole in guiding pin.
I had few 50 pcs boxes 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.
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Exchange/Return Notes
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4.5 ★★★★★
Based on 30 reviews
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Product Reviews
★★★★★ 5
Surprisingly, effective cooling blanket
When I first saw this cooling blanket available, I grabbed one right away. I had purchased a cooling blanket for my grandfather last summer that was fantastic but very expensive, so I was curious whether this one would actually compare considering the price difference.
Right out of the package, I could immediately feel that it was different from a normal comforter. The fabric itself feels noticeably cool when you touch it, which honestly caught me off guard in a good way.
The gray version I have features a striped design on one side and a solid gray color on the reverse. I love that it isn’t just plain white like so many cooling blankets tend to be. The pattern adds some visual interest while still matching pretty much any bedroom setup.
The fabric is incredibly soft and smooth against the skin. The brand says it’s made with Ice Toweling technology fabric, which supposedly works by absorbing body heat through the fibers’ molecular structure. I’m not totally sure how that works scientifically, but I can definitely tell you the result is real because the blanket does feel cooler when you sleep under it.
Something else I appreciate is that despite being silky smooth, it doesn’t constantly slide off the bed. I was expecting it to behave like a satin sheet, but it actually stays in place surprisingly well and its true to size.
Cleaning is straightforward. They recommend air drying the blanket to preserve the cooling fibers, which seems like a reasonable precaution. I would probably treat it like a delicate fabric just to keep it in good shape long term.
All things considered, I’m really impressed with this blanket. It’s soft, comfortable, genuinely cooling, and a great value compared to some of the pricey alternatives out there. If you tend to overheat while sleeping, this is definitely worth considering.
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Reviewed in the United States on March 9, 2026
★★★★★ 5
The price was great
Style: Original, Size: Standard/Queen
I couldn’t believe how comfortable they are
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Reviewed in the United States on January 2, 2026
★★★★★ 4
Stay Puft
Style: Original, Size: Standard/Queen
Cooler than most pillows and doesn’t go flat. Still gets warm throughout the night.
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Reviewed in the United States on August 8, 2025
★★★★★ 5
Amazing Pillows
Style: Original, Size: King
Yes, great pillows!! we love them
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Reviewed in the United States on December 28, 2025
★★★★★ 1
DONT WASTE YOUR MONEY!
Style: Original, Size: Standard/Queen
I ordered 4 pillows and paid almost $100 for them. They're absolutely pitiful! I could have bought better pillows at Walmart. They're soft and thin. Not at all what I was expecting.
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Reviewed in the United States on April 26, 2026