(10 votes, average: 3.40 out of 5)
Loading...And here comes another tube amplifier. I was very skeptical when I saw this thing on ebay at first. $86 shipped for a tube am, I thought. It must be a piece of sh**. But I wanted a tube amp for my office at work. It had to be something small. So I started to research about this tube amp and a couple of other amps on ebay. After a bunch of research and being guided by the following thread, I was very close to making my decision.
(12 votes, average: 3.83 out of 5)Loading...Very little is written about this tube. It’s practically unknown, but at the same time it’s a fantastic replacement for 12au7
Now this is just wrong. I found this tube in the pile of Chinese tubes that I keep because I can’t through them away (there is something about tubes that stop me from doing this) and nobody would buy them for any reasonable price. This is 12au7 that came with one of my amps. If you look at the metal divider that separates two plates you will see dirt on that divider. If you’ve dealt with NOS tube you know that they can be dusty and it’s hard to clean them without removing the silk screen. The same durst is present inside of the tube!!! Wholly Sh*****!
(38 votes, average: 3.61 out of 5)Loading...“RCA black plate is nice all around but not as clear and low distortion as the EE.” Read
Yet again. Very view reviews are available on Internet. See reviews from this site in comments.
(18 votes, average: 4.11 out of 5)Loading...“Very well made, low noise tubes, the large halo type being acclaimed as sounding near longplate in quality. “ Read
” Amperex 12AU7 (Heerlen factory): excellent tube top to bottom. This one does it all.” Read
“I think the bugleboys are a bit better,but I might be fooling myself, so these comments apply to any Holland made Amperex 12AU7. Full range, nice extension on top with a great sense of vibrancy, transparency and life with very good focus. This tube sounds warm, vibrant, exciting, extended & clean on top, yet smooth and fatigue free all at the same time. “ Read
(22 votes, average: 4.00 out of 5)Loading...“…His tonal palette was immediately richer, as if some sonic architect during his construction painted the midbass with broad, bold strokes and then said, “we build here”…” Read
“This is another great tube in the line up. It is smooth, graceful, transparent, and articulate. Its treble is as good as the Mullard 10M but presented in a different style. ” Read
I recently went through testing of a lot of different 12at7. Here is what I found out.
If the tube is used in the circuit it’s designed for, there is very little sonic difference between various tubes in this family. The difference is possibly 1%. I tried NOS Telefunken and ShuGuang with practically the same results. I also tried them in multiple amps with the same results.
(11 votes, average: 3.36 out of 5)Loading...Again no reviews on internet. It’s hard to find reviews for the new tubes 🙁
