2. misc-audio
  3. 1251227824

Tube rolling in Yaqin Pacific Valve Tube Buffer

A Shuguang 6N1 is included with the tube buffer from the factory. It sounds pleasant. An Amperex 6dj8 orange globe A frame I tried, sounded surprisingly thin and the highs shrill. I can only guess that the buffer is "voiced" for the supplied Shuguang 6N1 tube and NOS tubes therefore don't sound as one would expect.
I read that owners of Yaqin & Pacific Valve tube buffers have bee using JAN Philip green label 6922.
Does anybody have any other experience with tube upgrades for these tube buffers?
Thanks.
umn

Showing 4 responses by umn

umn OP
65 posts
 
That 6N1, 6N11, & 6DJ8 will all work. No mention is made of 6N1P.
umn OP
65 posts
 
Oops. I meant to say that the manufacturer states that 6N1, 6N11, & 6DJ8 will all work. However, no mention is made of 6N1P.
umn OP
65 posts
 
The label was pretty much rubbed all off so the price on eBay was very good. I decided to burn in the tube for 36+ hours on the outside chance it was actually new and it seems to be settling in. I will have to reassess it after that time.
umn OP
65 posts
 
I am begining to think that the answer may be that the Yaqin tube buffer is supplied with a Chinese 6N1 and was probably designed for that tube. While the 6DJ8 may work, it and 6922/7308 tubes have different heater elements etc.
In fact, in the reverse case, many do not recommend 6N1 & 6N1P (Russian equivalent) in circuits designed for the 6DJ8.
So, maybe what I am hearing is the result of this.
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