Category Archives: 300B-Z / 300B-T/ WE300B

“Your (Treasure) 300B-Z is unreal”

SG-2A3-6Feedback received from customer Vismantas B via email:

“Wow, your 300bz  tubes are unreal… Sound is of another world, i use with lm-210ia amplifier .. Definitely i buy one more pair of these tubes:)”

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Attention Cary amp owners: “Just follow me, all music lovers”!

cary 805 AD tube ampA feed back from (Thomas S.) a Norwegian with 55 years in the high fidelity hobby with almost no cost and effort spared in search to enjoy recorded music:

“Hi Rachel, Grant Fidelity.

I just wanted to give you a feedback on the tubes you just sold me.

I used to have Cary 211 AD, with  their  211 and 845  tube possibilities for amplifying. But, after serious trouble with one of the tubes, that caused me a dangerous repair ( done by myself – guided by Cary on the phone) – I gave them up. I thought  of the tube future
expenses  and problems  of a similar kind.

The last 10 years I have had the scaled down Cary 805 AD with the Cary SLP – 05 preamp. In the meanwhile I scaled up with Golden Dragon Premiere tubes all the way – as I thought they were good enough for me. This matched with Cary SACD player. Focal Speakers. Mundorf AMTs – from 5000 Hz and up. Backed up with Lyngdorf Millennium digital amp
and ProAc satellites behind the main speakers.

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“Yes. You read it right. The Psvane (WE300B replica) were most like the ’78 WEs.”

WE replica 300B single with boxRead the review by reviewer Kevin Fiske – he compared the Psvane WE300B replica to the original WE300B ’78, ’88 and the re-issue ’98’:

On Sovtek 300B – “‘powerful bass, dry midrange, restricted top end – rather grey and dead sounding.’

On Psvane WE300B 1:1 replica: “We then changed to the Psvane WE Replicas, played the same tracks and were rewarded by a much more enhanced sense of dynamic flow, of micro dynamics and openness. My notes say: Voices comparatively glowing’, strings have a better sense of wood and gut.’ It was clear to all of us that the Psvanes were in a different league to the Sovteks.”

On Western Electric 300B ’98 re-issue: “the 98s sounded very different to the Psvane 300B replicas. The WEs struck all of us as being smoother and less granular, with a richer tonality in the midband but with less bite to the leading edge of notes, and less top end, too, than the Psvanes.”

On Western Electric 300B ’88: “I felt they were different to the ‘98s, but the differences were less so than those between the 98s and the Psvanes. I heard a slightly richer and more fleshed out midband than delivered by the ‘98s, but voices were smaller, as if the sonic picture had been through a too-hot wash cycle. They were very smooth and a bit recessed.”

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“These Psvane (WE300B Replica) are certainly in a different league to others”

Psvane WE300B box large3Feedback received from Peter R. in Australia on WE300B Replica:

“I’ve just loaded up my Shindo Concertino with a new pair of Psvane 300B WE Replica’s from Grant Fidelity and was totally surprised at what I heard – straight out the box! It made me realize that these valves are a cut above.

I can’t compare them to original or re-issue WE’s, so these comments are more a comparison with brands such as Full Music and Golden Dragon – and over 50 years of listening to valve amps.

At this very early stage there seems more of everything. The sound is sweeter and deeper and very musical. These Psvane’s are certainly in a different league to others I’ve heard in the 300b territory.

Maybe calling them WE Replica’s might encourage some skeptical reviews, but that aside they are front-runners in their own right and they give me some insight into why we hear so much about the legendry originals.

I’ll come back in a few weeks with an update.”

– June 3rd review update:

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Our in-house listening comparison among 300B’s we have

A listening comparison of TJ Full Music 300B tubes and Shuguang 300B tubes done by Grant Fidelity can be found in our forum here:

Tubes include: TJ Full Music 300/n mesh plate, TJ Full Music 300B/C carbon plate, TJ Full Music 300B/SE carbon plate special edition, Shuguang 300B-98 clear glass, Shuguang Treasure ‘black bottle’ 300B-Z. Please feel free to comment further and add your inputs.

Grant Fidelity

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‘amazing… better than reissue WE300B’

– from Robin Waytt, owner of Robyatt Audio (

“The new Shuguang Treasure Series 300B-Z tubes arrived yesterday. These Black bottle carbon coated tubes are kind of unique in appearance, and construction, so I thought I would try them!

I put them in my Tektron switchable 2A3/300B/50 SET integrated, and ran them into the old Altec 604-C’s. I must state I have never been a 300B fan , I prefer 2A3’s or 45’s, however these new tubes could be one of the nicest tubes I have ever heard!!! Incredible detail, with no glare, the traditional 300B, “white” sound is gone, just sweet detail with amazing extension, and air around the instruments!!”

“I compared a loaner pair of engraved base 1930’s original Western Electric 300b’s, my re-issue Wester Electric 300b’s, and a new pair of Grant Fidelity imported Shuhuang Treasury Series carbon coated 300b’s. All played in the reference Tektron 300B intergrated using vintage Telefunken AC2 input tubes and NOS Panasonic 274A’s rectifiers.

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‘fabulous’ – from customer in Russia

 Original post was on AudioCircle: 

« on: April 24, 2009, 05:21:01 pm »
Reply with quoteQuote

I think I am overexcited with those tubes   Smile *(hopefully that won’t stop), so I would like to share my experience with other tube lovers. I used to have Golden Dragons (I think marked Hot Rod) then Svetlana 300 B, which I thought are much better than dragons, but Black Bottles are something special.. Too sad that there is no information for them on the net, except on the distributor site (it is Grant Fidelity from whom I bought them)…

From the very first moment, it is clear that they are the TUBES on my Audion Silver Night 300 B power amp… Very addictive tubes (cannot stop listening), I believe that they deserve more reputation than they used to have, frankly Shuguang in my view were sort of "shubby tubes", but the ones I have got changed my attitude to the company in completely opposite way!

I have started burn in, but even right out of the box they are more better bass, airy trebles and huge sound stage! I can’t wait those 300 hours req’d, as I read they would be different tubes…

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‘I discover a great (maybe the greatest) 300B tube’

– from  customer Lucian R. in California:

“I just wanted to let you know that yesterday I exchanged all the tubes in my amplifier for ones I received from you.

I am impressed with the sound and if the tubes sound like this immediately from the box I can imagine how they will sound after a couple hundred of hours….

Once again thank you for the excellent service…”

Follow up review published on AudioCircle:

“Hello members – I discovered a great (maybe the greatest) 300B tube and wanted to share a short review with you (I published it few minutes ago on Audiogon)…

Here we go:
I am an owner of VAC Renaissance 70/70 amplifier that I had for the past 12 years. The set-up of my audio system is quite minimalistic and I am so happy with it that I did not change any major components for several years with exception of the digital source.

System: Martin Logan original CLS IIA speakers with updated power supply, two Marti Logan Depth subwoofers, Yamamura Millennium 5000 interconnects, Stealth Ultimate Ribbon speaker cables and APL modded Denon 3910 CD player.

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JJ 300B vs. Treasure 300B-Z

– from customer Swimjay:

“Here are some additional impressions from a new 300B Z owner, with more to follow as the tubes continue to burn in. [Associated equipment includes Cambridge Audio 840C CD player w/Dexa clock and non-standard output IC, ef86-based home made line stage, home made dual mono 300B SET amps based on Jack Elliano’s DRD design, Mapleshade interconnects and speaker wire, not-yet-released newly designed vibration dissipation devices under all electronics, and very,very highly modified Quad 63’s. These speakers are not normally associated with low power amps, but in this incarnation have such a wide dynamic range that they sound great. That is, they don’t play very loud, but retrieve low-level detail so far below the range of a normal loudspeaker they don’t need to play loud to be satisfying.]
I’ve been using JJ 300Bs, and all comparisons that follow are with those.

Right out of the box the tubes are agreeable, a bit modest (not polite), even, for the first 10 minutes, slightly pinched sounding. But quickly, the sound grows more, for want of a better word, lovely. In reading Ian’s thoughts above, I was afraid I might find an overall euphonic warmth, but this was not the case. The initial presentation is unambitious, as if no chances were being taken, but very unstrained. No one area calls out its excellence, but the overall sense is very comfortable–it doesn’t seem as if there’s going to be any suffering during the break-in period.

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TJ Full Music 300B mesh plate vs. Treasure 300B-Z

from customer Doron O by email:

“Hello, Tubes arrived and are playing along. I do not think they are going back to you anytime soon…:-) Very good from the get go. Compared to the existing TJ 300B/n Mesh Plates the SG 300B-z have massive bass, they sound smoother, more relaxed, mid range is fuller (more lush) yet clean – more meat on the bones so to speak. Very seductive and un-fatiguing tubes, exactly like the experience Ian presented in the forum.”

More from Doron O in Feb 2010:

“Just wanted to share I put about another 15-20 hours on the tubes and they do get better.

Eva Cassidy sounds less shouty, more details are coming through in the mid range (contrasts between music and silence are more pronounced, nuances in her voice are clearer) and bass is getting heftier.

All changes are for the better. The sound is more balanced and less aggressive than with the TJ and fuller too.
But more than anything I find myself not being able to listen to few tracks of LP’s anymore . I put one side and having hard time getting up from the listening couch until the complete side is played…It used to be much easier to swap LP’s or tracks in the middle.
If this is not what this hobby is all about, than I do not know what is.
Explaining this phenomena to myself in technical terms: I believe that these tubes generate less distortion, especially in transitions (soft sounds followed by very loud ones – like a burst of a sax’ solo) which translate to a smoother, more lifelike sound which is much less fatiguing:
The best I heard in that department so far was coming from a pair of 195W/Channel McAlister Audio OTL mono block amps – all the details were there with gobs of spatial information yet there was no hint of harshness or glare. My JAS SET amp ( along with very serious NOS tubes across the board (did not keep any of the stock tubes) comes awfully close and that it is very very impressive to me (the McAlister OTL’s are ~US$9,500).”
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