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Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
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Description
Platinum matched pair 6678 RCA 6U8A NOS NIB 6GH8A ECF82 6EA8 Black AnodesOne platinum matched pair (2 tubes) of rare 6678 RCA 6U8A made back in 60s. They come in original old type RCA boxes. They can be used in modified Dynaco ST 70 PC 3 board which accepts 6GH8A ECF82 instead of scarce 7199. They also can be used in original Dynaco ST70 driver board using special noval adapters. We have few 100 pcs packagings of these tubes and all pairs I have are carefully tested and matched by plate current on my Metrix U61 B tester.
One platinum matched pair (2 tubes) of rare 6678 RCA 6U8A made back in 60s. They come in original old type RCA boxes.
They can be used in modified Dynaco ST-70 PC-3 board which accepts 6GH8A / ECF82 instead of scarce 7199. They also can be used in original Dynaco ST70 driver board using special noval adapters.
We have few 100 pcs packagings of these tubes and all pairs 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!!!
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.7 ★★★★★
Based on 1659 reviews
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Product Reviews
★★★★★ 5
It’s like a nice hug.
Size: Queen
I find this mattress pad very comfortable to sleep on. I originally bought it because my mattress was too hard. The mattress pad solved the problem. It’s nicely quilted making it very cushy. I’m very happy with it.
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Fixed my aches, real improvement in sleep
Size: Queen
It actually does make my bed feel better.
I was skeptical, but decided to try it because our mattress isnt very old but I wake up with aches in my hips/lower back. When I got it, I thought no way this works. But it does.
It goes in like a fitted sheet, super easy to put on. And I honestly havent woken up with hip or lower back aches since using it. Had it on our bed for about 2 months now.
I read some people say they sleep hotter with it, but I havent noticed that at all. Temperature feels the same as without it.
So glad I tried this before spending money on a mew mattress!
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Best Mattress Pad!
Size: Queen
This is the best mattress pad you are going to find anywhere and the price is actually a bargain compared to all the other mattress pads I saw in the stores or online. Thought I needed a new mattress but all I needed was this comfy cover.
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Comfortable!
Size: King, Unit Count: 2.0
After vacationing, I wanted to buy the brand of pillows used at the resort where we stayed because they were so comfortable. I landed on these pillows instead because of the reasonable price point. These pillows are every bit as comfortable. They are fluffy and supportive without being too heavy and stay cool. These pillows are comfortable and well made. They support both my head and neck and e long enough to use as a body pillow for side sleeping. I would recommend these pillows!
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Reviewed in the United States on September 24, 2025
★★★★★ 5
100% goose down
Size: King, Unit Count: 2.0
Love these down pillows, Absolutely perfect I can conform to any shape I want for comfort of my neck.
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Reviewed in the United States on May 3, 2026