Category: – 6SN7 / CV181

Treasure 6SN7SE Globe: ‘I got the chills from this thing’

Feedback received from customer Noah via email:

“Hey there, I just received a Treasure Globe  6SN7-SE

I dropped it in my (Schiit) LYR+ / BIFROST and I’ve been listening to it on my (Sennheiser) HD800S. This thing is mind blowing – thanks for selling such a great tube in Canada.
I got the chills from this thing. It completely evens out the tone of these headphones while still keeping a massive soundstage. I have been using them for every genre and it all sounds good, as long as it was mastered well.  I’m going to have to get more spares . . .  “

‘Treasure 6SN7-SE GF Special Edition’ – ‘better than ANY tubes I have ever used!’

Treasure Globe 6SN7-SE (pair or single, GF Limited Special Edition)

Mark S. acquired a pair of Grant Fidelity special edition Treasure 6SN7SE top grade with us recently for his Moon Audio Dragon Inspire IHA-1 Tube Headphone Amp. Below is his feedback via email. We hope this will help other headphone amp owners when choosing upgrade 6SN7 tubes!

“Rachel,

Bless your heart! My order of the Globe 6SN7 tubes arrived in just 3 days! (seller note: Mark ordered our Express shipping upgrade for extra cost)

I realize that there is a break in period for the tubes, but they are already better than ANY tubes I have ever used! 

For the first time, my amp has ZERO noise with headphones! I can’t believe it. Also, I have never heard the sound so incredible as it sounds with these tubes!

Thank you so much for your great service and the best tubes I have ever heard!

Very best regards,

Mark”

Linlai™ Global E-6SN7 on Feliks Euforia Headphone amp: from Germany

We have just received the feedback below from Greg K from Germany! Greg owns a ‘Feliks Euforia headphone amplifier’ which came with Psvane CV181-TII as driver tubes.

Read about his first impression after swapping to [Linlai™ Global] E-6SN7 for 26hrs – it might help those who wish to know how the E-6SN7 compared to Psvane tubes: (note: Linlai tubes full burn-in will take approximately 100hrs)

“I have now burned in the tubes for a good 26 hours so far.And on the Feliks Euforia, where the Psvane CV181-TII were before, a lot has happened. I listened with the Audeze Lcd 2 C headphones which are quite neutral. And relabelled 6080 Sylvania power tubes which also arrived on Saturday.

Compared to the Linlai Global E-6SN7, the Psvane are quite neutral in sound. I noticed this immediately after the exchange. This is no longer the case with the Lin Lai, they play much warmer.

The bass has increased considerably where before they were bloodless in direct comparison to the Psvane CV181-TII. The good thing about the Linlai is that the mids and highs are relatively unchanged compared to the Psvane CV181-TII. I didn’t notice any loss there, they seem to have gained a bit of sparkle.

They are also more accurate, closer to the music and go a bit deeper in the highs and a bit longer in the low end. Detail resolution is also very good, I like it better than the Psvane tubes.

Vocals are a bit more distant and more central than with the Psvane, or less voice accentuated, which I personally find better.

All in all, they are definitely worth the money and improve the sound of the Feliks Euforia dramatically. Before I was always getting disturbed by something, but that has gone since the first hour since the Linlai have been in. I don’t regret buying them. Much more the Psvane that you can book at Feliks.

It makes the Feliks neutral but cold, with the Linlai it’s just the opposite.

That was my first impression and I know they still need a little time to burn in. But they are getting better by the hour. Linlai has done a really good job. It also shows that after such a short time they are already so open and show the direction they are going in.

I am enthusiastic about the tubes. And I wanted to tell you that much about how good they are in the first hour.

With Kind regards
Greg”

Can your 6SN7 replace my 6SN7GT, 6SN7GTA, 6SN7GTB?

We sometimes receive amp owners question about tube substitute related to 6SN7. Here is a short summary:

  1. GT stands for ‘Glass Tube’.
  2. GTA is an enhanced version of original GT version – to allow higher plate dissipation than the GT version.
  3. GTB is variant of GTA, with a heater warmer control to further enhance reliability when this tube was used in TVs.
  4. Very early 6SN7 tubes can handle max 300V. Today’s new production 6SN7 tubes can handle max 450V.
  5. In short, new production 6SN7 can replace your old 6SN7 without frying the tubes. But you should not use a NOS 6SN7 designed to handle 300V, into a modern circuit of 450V.
  6. All our listed 6SN7 tubes (no matter what suffix it has) can electronically replace 6SN7GT, 6SN7GTA, and 6SN7GTB.
  7. Do check dimension clearance to make sure the different glass bulb shape can fit into your amp space!

Happy tube rolling!

6SN7SE Globe Tube Tips – ‘You Raise Me Up’

Some amps have preamp 6SN7 tubes placed in a very tight real estate – i.e. two tubes are placed very closely to each other so the new high end 6SN7 with curved larger / wider glass enclosure cannot fit in side by side.

A customer from Europe recently told me his solution and I think it is worthwhile to share! That is – use a socket saver to raise one of the tubes up!

Just google ‘8 pin socket saver’ (not ‘socket adapter’ which may change pin layout connections) and make sure to purchase from a reputable audio parts vendor. Some lower quality socket saver can introduce current leakage to your circuit and cause unexpected noise issues.

Happy Listening!

6SN7SE Globe – ‘The SE blows them all out of the water’

Feedback received from Craig M. on GF Special Edition – Treasure 6SN7SE Globe:

“Rachel,
I got my SE’s today!  I must say … I have spent a LOT of money on boutique 6SN7 variants and I have never heard anything like this before!  I am running a DIY 6SN7 line stage that was designed by Jack Elliano of Electra-Print.  This is by far the best 6SN7 I have ever heard.  I have NOS Sylvania Bad Boys, TJ, Black Treasure, various JAN and there is NO comparison!  The SE blows them all out of the water…”

6SN7SE: “stunning life -live -like music. HUGE soundstage”

Feedback received via email from customer Lincoln W.:

“Hi Rachel, I thought I’d give you a preliminary feedback on the Treasure Globe 6SN7-SE.  they are simply amazing. A pair makes the entire system sound like a brand new system! stunning life -live -like music. HUGE soundstage. I’m running a DAC that already made the soundstage big, but the tubes gave it more depth, the soundstage became bigger.  lots of air, lots of presence…the music produced was jaw dropping – arms up in the air moments. and there were many!”

(note: Lincoln uses 6SN7SE in a Supratek preamplifier)

Which 6SN7SE should I get?

It has come to attention that some shoppers are confused by the different ‘6SN7SE’ tubes available on the market now.

We here clarify as below:

What we offer is called ‘Treasure Globe 6SN7-SE’ (GF Limited Special Edition).

GF stands for ‘Grant Fidelity’.

Globe is the shape of the glass enclosure as most 6SN7 tubes are either straight bottle, or mini 300B shaped with a shoulder.

SE stands for Special Edition, as this model was custom made for us based on the best possible design feature and electronic specs for single ended triode (SET) tube amplification.

We contracted tube factory made the special batch for us. We screen all tubes by our QC standards, not factory’s QC, and then further graded them to ‘low noise Grade A’ and ‘driver grade B’. For those not passing these two grades by our QC standard (about 53%), we instructed factory to destroy them (this we cannot verify if done or not, or these sub-grade tubes flew out of back door to some other vendors).

All our ‘Treasure Globe 6SN7-SE’ (GF Limited special Edition) tubes have front Chinese calligraphic logo of ‘Treasure’, plus a back printed line of ‘GF Special Edition’. They are only sold from THIS website, not any other vendors directly or indirectly. Whoever claim they sourced the tubes from us and of same quality, it’s NOT true.

Psvane itself has launched 6SN7SE (clear glass globe shape, with white ceramic base), and 6SN7BE (blue glass globe shape, with white ceramic base). Both are offered under ‘HIFI series’ as varieties to entry to mid level 6SN7. These are NOT the same tube as our ‘Treasure Globe 6SN7-SE’ (GF Limited special Edition). Other tube factories in China may also offer globe shaped 6SN7 and call it ‘6SN7SE’ – they are NOT the same as our offering and have no relations to us either.

Hope the above clarifies the confusion around this SE model, and allow all shoppers to shop wisely with adequate information.

Happy Listening.

Grant Fidelity

Treasure 6SN7SE Globe – “A sound investment for sure”

Feedback from customer Leo. B via email:

hello,my 6sn7se’s arrived yesterday safe & sound !! wow they’re Beautiful !! i installed them as my 2-front driver tubes in B A T VK-75 & WOW They SOUND Beautiful sound stage fattened up & widened out DETAIL GALORE !! A SOUND INVESTMENT for sure….thanks so much & i’ll try out some other tubes soon !! Leo B.