Hey, guys
I would like to share some initial feeling about Tung-sol BGRP.
However, I am totally new to tubes and this is my first trail of "tube upgrade", I have no reference, or experience to judge if this is the best 6SN7 like other pros would do.
I just put it on my WA6SE about 2~3 hours. Compare to stock GE 6EW7 came with my WA6SE, it makes me "Wow" immediately after few minutes warm up. The sound is so much more revealed, the dynamic improves a lot, and the most dramatic change is the "soundstage". On my system and in my own feeling, the soundstage is about 20% wider and more than 50% deeper. It brings midrange right in front of me just like I am on the stage while the background music moves several meters backward than original. I can easily image there is a concert hall and every instrument has its position, not only right and left, but front and rear.
I am not good in English and it makes me much more difficult to describe acoustic.
However, I would say Tung-sol BGRP makes the image of the sound just like watching movies from normal theater to a "3D IMAX".
The screen is much bigger and everything has its "distance".
There is always something trade-off come together as a package.
Tung-sol BGRP has less amount of bass which is definately a disaster to my HD800(comparing to my HD600, HD650).
I have ordered EML 5U4G mesh and waiting to get it, truly hope it can make up this problem.
My BGRP has another 2 issues : Microphone effect and noise.
The noise starts to appear after volume nob over 12 o'clock and keep increasing.
I tried to clear the pins of tubes, but no improvement.
Fortunately BGRP sounds louder than stock 6EW7, so I can enjoy most of the music under 10 o'clock.
As to the Microphone effect, it is quite annoying(nature of vintage tubes?).
Even I turn off the volume, I can still hear it when I touch my WA6SE.
I plan to buy something like
Ensemble Tubesox, or tube rings.
Does anyone have better idea?
Thanks!
Ivan.