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Old 24th May 2013, 12:08 PM   #31
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Quote:
Originally Posted by 45 View Post
Another option could be the KR 2A3 but I don't know this one at all. I think the pair will cost something around $400-450....
Do you prefer them above EML? I can buy them much cheaper ( KR ) as EML,
a friend of mine is importer of KR tubes...
But i read mixed reviews of them....
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Old 17th July 2013, 03:34 PM   #32
oyegral is offline oyegral  United Kingdom
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Some first hand experiences with 2A3's

First of all, please allow me to put my cards on the table, i co-own AA-Acoustics.com and we are the only re-seller of Psvane valves here in the UK since 2011, we also sell TJ Full Music products and have been selling those since 2004.
I use a pair of Consonance Cyber 2A3 PSE monoblocks daily in my main system with a Modwright LS100 pre-amp.
These amps were supplied with Shuguang 2A3C that are pretty good and a step up from the Sovtek staple diet that are better than the more expensive EH Gold version [IMHO] , the next contender were the Psvane "HiFi Series" 2A3 and much smaller physically than the Shugs had better all round tone to my ears and if price is a limiting factor these would be the first choice for many, next up were the TJ meshplates [Globe version-preferred to the bottle shape as less sibilant], these are great tubes but in my system are a bit too bright and bass light, but the midrange is simply superb!, next up were the Shuguang "Treasure Series", after quite a lengthy burn in these went straight to the top of the list, similar midband to the TJ but much fuller sounding especially in the bass, i used these for about two years before the Psvane "T Series" were released so they were put in for the burn in, this takes some 300 hours and i needed an A-B comparison with the Treasures after it, but the Psvanes were the icing on the cake for me, they seemed to do everything that the Treasure did but slightly more incisively and i forgot about the hifi and just listened to the music, for the past 2 months i've been listening to the Psvane WR2A3 replica's, these sound more like a 2.5v 300B to my ears and are allegedly a hybrid design of the RCA2A3 and WE 300B, i do have several vintage 2A3's from RCA/Sylvania/Raytheon and these don't look like any of them, i cant help but feel that the factory have missed a golden opportunity to recreate the classic Cunningham monoplate here, these are probably very system and taste dependant, but for my ears the vote goes to the Psvane T's, i have not tried the JJ's or the KR's, but the Psvane T 211 bettered the KR 211 in a 211 shootout with a few pairs of ears present.
Yesterday i put in a pair of TJ solid plate 274B [Globe version] rectifiers in and so far they eclipse the Psvane hifi version and the "Potato Masher" 5R4WGB, but early days yet!
Just to clear up any confusion about Chinese manufacturers, there are only 2 in existence, TJ Full Music in Tianjin [hence TJ], they also manufacture the Sophia brand, and Shuguang in south China, this company also control the old Guiguang factory that are responsible for the Psvane range and are made on different machinery from the main factory, we also buy the "Treasure Series" from them directly into the UK , there does seem to be quite a lot of confusion mostly brought about by conflicting grammar used on various websites about Chinese valves, but i have found them to be pretty reliable, unlike some European and Russian offerings, but there is no such thing as a 100% reliable production no matter how much care is taken in production, anything i can help with, please ask.Ian
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Old 21st July 2013, 03:24 PM   #33
aliwang is offline aliwang  Hong Kong
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I got the offical introduction about Psvane WR2A3, WR2A3 introduction

Indeed not cheap!
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Old 29th July 2014, 01:00 AM   #34
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You guys have been much luckier than I with Psvane tubes. I love the sound. I have tried the 2A3 MkII and WR2A3s. Beautiful sounding tubes but all end up developing low level noises easily audible with headphones. Ticking, irregular static sounds, little squealing noises and not all the time. But, I have returned tubes such that I have had, in hand, 9 Psvane tubes. They ALL ended up developing similar noises. Some within a few hours, some after 50-100 hrs. I would suspect my amp (DNA Stratus) and even it scoped out to be sure. But no other tubes develop these problems - only Psvanes. I have NOS RCAs, EML meshplates, NOS Sylvania, Shuguang 2A3B and Nature Sound- all are beautifully quiet.

Here's how much I like the Psvane sound - I could have returned the WR2A3s for a full refund ($400) but I chose to keep them so I could enjoy those moments when they aren't making these annoying noises. But those moments don't last long.
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Old 16th September 2015, 11:46 AM   #35
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I have just burnt in my pair of WR2a3 for around 60 hours, I think the sound is quite good. The sound is quite similiar to the Black glass Kenrad 2a3, very good on instrumental music, the vocal is quite forward and is a touch grainy when compare with my RCA 2a3 BP with spring filament. Good soundstage and good details.
With good condition Vintage 2a3 harder to find, I think the WR2a3 is a good choice to have.
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Old 16th September 2015, 12:57 PM   #36
kaputt is offline kaputt  Germany
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Quote:
Originally Posted by rambobo View Post
I have just burnt in my pair of WR2a3 for around 60 hours, I think the sound is quite good. The sound is quite similiar to the Black glass Kenrad 2a3, very good on instrumental music, the vocal is quite forward and is a touch grainy when compare with my RCA 2a3 BP with spring filament. Good soundstage and good details.
With good condition Vintage 2a3 harder to find, I think the WR2a3 is a good choice to have.
With "burn in" you mean you heated them for enough time for the emission to stabilise? This took 60 hours?
May I ask if you measured the current these three makes of 2A3 draw?
Thanks!
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Old 16th September 2015, 01:23 PM   #37
Bigun is offline Bigun  Canada
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Quote:
Originally Posted by cotdt View Post

That JJ 2A3-40 I have, is really a 300B plate. It sounds just like my 45's, except it gobbles up 2.7A of current for its filament.
It's rated for 2.5A is 2.7A within normal variation ?
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Old 16th September 2015, 04:38 PM   #38
M Gregg is offline M Gregg  England
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I often wonder,

If a tube fails to meet spec is it re-labelled as a super version of another tube

AKA 300B fails 300B and becomes a super 2a3 or a 6L6 fails and becomes a super 6V6 etc...

The 5881 was regarded in the 80's as an upgrade for EL34...I think we will have to be satisfied in the future with what we can get..if anything!

In the 80's I bought some large versions of the EL34 from Golden dragon and they flashed over and failed one after another..8 in total

I tried their 6L6 and KT66 and I still have them running..so there you go!
I have some old CVC (chelmer valve) and they sound better than Mullard EL34.

Regards
M. Gregg

Last edited by M Gregg; 16th September 2015 at 04:47 PM.
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Old 2nd October 2015, 03:59 PM   #39
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Yes,the burn in is for the emission to stablize, and for the sound to open up. According to the manufacturing sec, it is same as 2a3. Now after 100 hours, my impression as follow:
Roll off a bit at the top, good bass and musicality, decent image and definition, slightly grainy with the vocal.
How good is it? That is really depended on your system circuit and what are you comparing with ! eg. I am using Single plate 2a3, Double Plate springtop and the early black glass Bi-mono Plate 2a3, all these tubes are the best of the vintage 2a3, therefore I don't think the WR2a3 is comparable. However if you are using Grey Plate, especially the late production and the current production 2a3 of modern brands, you will be susprise with the WR2a3 sound.
Nonetheless I think the WR2a3 has a touch of vintage tube sound, unlike the KR 2a3 which is more HiFi sounding. It doesn't have the vintage Western Electric sound, nor the RCA sonic, the sound is closer to National Union.
Unless you have pile of NOS 2a3 stocking away, you can consider to try it.
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Old 2nd October 2015, 04:16 PM   #40
kaputt is offline kaputt  Germany
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Quote:
Originally Posted by rambobo View Post
Yes,the burn in is for the emission to stablize, and for the sound to open up. According to the manufacturing sec, it is same as 2a3.
Hi! I didn't get that correctly. Are you saying that the emission of the Psvane WR2A3 is the same as that of a 2A3? That statement confuses me a bit as in my experience every tube (not type of tube, but actual single tube) has slightly different emission and therefore draws different current in the same circuit. That's what matching pairs is about, finding two that draw the same current.
When using old tubes (nos or used) it usually takes a few hours for the current draw to not change anymore.
That was also the reason why I asked if you measured the bias of the tubes when comparing them and checking the plate curves to see where you are. Otherwise you might not only compare different construction but also different operating points.
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