Shootout of Nos 6sn7 tubes

I will have shootout between TS BGRP, RCA vt231, KR vt231, Syl vt231, Raytheon vt 231 and "Bad boy" next weekend.

If I get MELZ 6N8S 6SN7 Metal Base next week, then I will also include it in shootout

RCA5691, Psavne Acme 300B, Psavne Acme 805 are also being used in Line Magnetic 508 amplifier.

Speaker will be Lansche 4.1 with plasma tweeter.

Digital source will be Dave and HMS fed by ripped CD stored in ssd drive of Cocktail audio x30.

I will play

Eva Cassidy's 'Autumn Leaves"

"Trinity Sessionn " by Cowboy Junkies

For classical orchestra, "Trittico" directed by Fennel.

"Still harry after all these years" will be for fusion jazz.

Any more suggestion gentlemen and ladies.

7aeeb429 76a8 4040 a90e 93802cf27573shkong78
Ive been curious about the NU. I never ordered them since reviews say the bass is not extended. Can't wait to hear
your thoughts.

The NU tubes are both some of the smoothest 6SN7s I've heard. They aren't really lush so much as they are "liquid." RCAs are definitely sweeter. I prefer the gray glass for its tonality, but the black glass has better bass in my system” –Len
● “…the sound is very good. Wide soundstage, a little more forward presentation, very good bass, and treble, and a sweeter midrange than the Kenrad. I still like the way the Kenrad attacks better. but if your looking for a lusher sounding tube than the KenRad theses grey glass NU are good. They dont sacrifice the bass and little treble.” –tom hankins

The NU black glass is very similar to the KenRad, the bass is not quite as huge. A bit dark, beautiful sound.” –Robert H


It is good to hear good experience about Delax.

I ordered two more pair of 6n8s tubes from him.

I am playing Olympic Panfare.

6n8s give both sparkle and air on the top and also full bass slam out of it.

It sounds gorgeous through 6n8s made in 53.

Yes those are National Union tubes. The Gray glass NU tubes bass was a little soft. Those black glass have good bass and are liquid sounding. You should enjoy them. 
@luisma31 It was a different seller. 

@shkong78 It's been at least 20 hours. I'm not about to re-solder the tubes. 

It will be better to contact dealer explaining what happened, that is, one tube has no noise and the other one has noise even after 20-30 hours.

He may send you one replacement tube.

Please update the progress.