Why do you call the CV181 not 6SN7 because the electrical parameters do not fit for the CV181 .Yes, the Horizon series does have a CV181. I understand what you mean.
The Horizon CV181 is even clearer and has much better depth and layering compared to the Classic series.
PSVANE Discussion & Impressions Thread
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Their electrical performance is exactly the same. However, the engineer who designed our HORIZON CV181 (6SN7) product has a particular fondness for British and European audio systems. While 6SN7 follows the American naming convention, CV181 adheres to the European standard. Therefore, the engineer insisted on naming this product CV181 instead of 6SN7.
My I recall that the data for a 6SN7 are different then a ECC 32 - CV181 as you can see in the data books.
Just an update on my issue with the 12AX7's, Psvane have kindly sent me a new valve directly as a replacement, even though the fault was some while ago now and not detected till long after the resellers warranty period had expired. Great service!
Thank you so much for sharing your experience! We’re thrilled to hear that the replacement process met your expectations.
Wishing you and everyone a very Merry Christmas filled with joy and music!
Wishing you and everyone a very Merry Christmas filled with joy and music!
Great news! The following PSVANE vacuum tubes are now back in stock on Amazon:
12AU7-AT EL84-AT 12BH7-AT 6SL7-AT 6L6WGC-AT 6550-ATIf you’ve been waiting to upgrade your gear, now’s the perfect time to grab them before they sell out again!
https://www.amazon.com/-/zh/stores/PSVANE/page/6752D1BF-8FA3-4DB3-8672-05848278CB66?ref_=ast_bln
PRICING ADJUSTMENT IN THE US MARKETDear Valued Customer，
Due to the recent increase in tariffs by the U.S. government to 104%, we regret to inform you that we must adjust the prices for the U.S. market. Starting May 1, 2025, prices will rise by 18% to 25%. Although this adjustment will not fully cover the additional costs, it represents our best effort.
To express our apologies, we assure you that we will maintain the current prices until May 1, 2025. We remain committed to providing high-quality products and services.
Price Adjustment Scope:PSVANE Official Store: https://psvane.co/
PSVANE Amazon Official Store：https://www.amazon.com/-/zh/stores/PSVANE/page/6752D1BF-8FA3-4DB3-8672-05848278CB66?ref_=ast_bln
PSVANE AliExpress Official Store：https://psvane.aliexpress.com/store/1104301571?spm=a2g0o.productlist.main.8.16c8WqgxWqgxa6
@PSVANE
Sorry, but the data you provide in each tube package is insufficient.
Anode voltage, grid voltage and resulting anode current are not enough. You would also need the dynamic parameters mu, Gm, Rp. If you do not provide them, how can a defective tube be replaced?
What disqualifies your product is that you do not offer these parameters even in the most expensive versions. Why not?
There is always the problem of the stability of the parameters. A quartet of EL84 Psvane Art tubes, after less than 100 hours of respectful operation, had turned into 4 very different tubes.
Sorry, but the data you provide in each tube package is insufficient.
Anode voltage, grid voltage and resulting anode current are not enough. You would also need the dynamic parameters mu, Gm, Rp. If you do not provide them, how can a defective tube be replaced?
What disqualifies your product is that you do not offer these parameters even in the most expensive versions. Why not?
There is always the problem of the stability of the parameters. A quartet of EL84 Psvane Art tubes, after less than 100 hours of respectful operation, had turned into 4 very different tubes.
@PSVANE
I would like to take this opportunity to ask whether the various Chinese brands produce valves directly or have them customized by one manufacturer.
For example, does Linlai (made up of ex-Psvane engineers) have its own production line or does it use an external production site, also shared with Psvane?
Why do Chinese manufacturers of direct heated triodes employ very exuberant but rather volatile and short-lived emission oxides?
When new, they often present Gm data above nominal data and then drop quickly.
Western Electric uses other types of emitting oxides.
According to Charles Whitener, Western Electric uses a double oxide cathode coating composed of strontium and barium carbonates, “with the addition of proprietary elements.” Not the triple coating (strontium carbonate, calcium and barium) preferred by other manufacturers. “With triple-coated cathodes, an aluminum orthosilicate layer is formed between the coating and the core material itself. The interface impedance increases and compromises the tube life".
Initially, when new, WE tubes are not particularly lively, but they are very long-lived and, after long and intensive break-in, express superior data as Gm. Is it a coincidence that the warranties offered are different between WE and Chinese tubes in the face of not so different prices?
This is strange because, by the way, the Chinese DHTs are wonderfully constructed.
Thank you
I would like to take this opportunity to ask whether the various Chinese brands produce valves directly or have them customized by one manufacturer.
For example, does Linlai (made up of ex-Psvane engineers) have its own production line or does it use an external production site, also shared with Psvane?
Why do Chinese manufacturers of direct heated triodes employ very exuberant but rather volatile and short-lived emission oxides?
When new, they often present Gm data above nominal data and then drop quickly.
Western Electric uses other types of emitting oxides.
According to Charles Whitener, Western Electric uses a double oxide cathode coating composed of strontium and barium carbonates, “with the addition of proprietary elements.” Not the triple coating (strontium carbonate, calcium and barium) preferred by other manufacturers. “With triple-coated cathodes, an aluminum orthosilicate layer is formed between the coating and the core material itself. The interface impedance increases and compromises the tube life".
Initially, when new, WE tubes are not particularly lively, but they are very long-lived and, after long and intensive break-in, express superior data as Gm. Is it a coincidence that the warranties offered are different between WE and Chinese tubes in the face of not so different prices?
This is strange because, by the way, the Chinese DHTs are wonderfully constructed.
Thank you
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I haven't read any comments that suggest that equivalent models of Linlai and Psvane tubes have the same exact sound character, which suggest that they aren't the same tubes. As far as reliability goes my Linlai Dream Series 845's have been reliable and sound great for the year and a half or so that I've had them (think they discontinued this model for some reason). The Psvane black bottle 845s I had sounded good, didn't fail, but didn't hold bias as well as I'd expect. Purely anecdotal, but I've read comments that suggest WE 300B's have not been without reliability issues.
I do not claim that Linlai Psvane, Shuguang, sound the same. I am simply asking whether there is a single tube maker in China who makes to special specifications for Linlai, for Psvane, Golden Voice, etc.
As WE also shows, to start tube building, is difficult and risky. Getting to the break-even point for the few maniacs scattered around the world requires large production runs and is not easy.
WE, however, has managed to get very good tubes with excellent characteristics . It would be nice if the Chinese tube manufacturers would provide more data on the tubes they now sell even at a high price ( rather than just the anode current indicated on the packages ).
Sorry for the late reply — we’ve been extremely busy lately due to the recent tariff issues in the U.S.
PSVANE is also known as Changsha Hengyang Electronics Factory. PSVANE is our own and exclusive brand. Alongside JJ, we are one of the two largest vacuum tube manufacturers in the world. Last year, our annual output reached 1.6 million tubes, making us one of the only two companies globally that produce a full range of vacuum tubes. Our products are used in audio equipment, musical instruments, and even medical devices.
In addition to our own brand, we also handle OEM production for many domestic and international brands (though I’m unable to disclose specific names due to confidentiality agreements). Altogether, our company has a team of over 300 employees, including those working on the production line.
We take the issue you mentioned about providing more parameters very seriously. Please understand that once we have addressed the current tariff issues in the U.S., we will give you a positive response. In fact, in the past, we rarely communicated directly with customers, as our agents handled customer service on our behalf. As a result, we didn’t have a clear understanding of customer needs, which is why I am now here, communicating directly with everyone.
Thank you for your message and suggestions!
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@PSVANE
Thank you for your reply.
Unfortunately, with the strange American protectionist policy (from the fathers of the most unbridled economic liberalism), it will be difficult to export.
All that remains is to focus even more on product quality.
Having stable, robust and long-lived cathodes is crucial to selling real quality tubes. On this element you need to improve further. Stability of dynamic parameters over time is crucial if you want to sell a quality product.
The EL 84 Art series and the KT120 are examples to analyze carefully. Poor reliability ( disastrous for the KT120) and volatility of parameters. If you do not think seriously about it, those who will need power tubes will buy from other manufacturers although, sonically, your tubes are very good.
On DHTs, at least on the more expensive products, you should work better on oxides. Having very good and stable emissive capacitances improves sonic and instrumental performance. On vacuum, on dispersed gases, on cleaning the elements, you are already good.
Still on the subject of DHT, you might think about faithful replicas of European tubes, as the Korean Stradi is trying.
PX4, AD1, RE604 could attract many enthusiasts.
The current EML replicas are ridiculous and have nothing to do with the originals. I can affirm this with certainty, owning the original versions in good quantity.
Would Psvane be able to replicate the ancient european activation processes (Philips and Telefunken), that is, with barium oxides vaporized on the filaments during activation? You could replicate authentic queens.
Thank you for your reply.
Unfortunately, with the strange American protectionist policy (from the fathers of the most unbridled economic liberalism), it will be difficult to export.
All that remains is to focus even more on product quality.
Having stable, robust and long-lived cathodes is crucial to selling real quality tubes. On this element you need to improve further. Stability of dynamic parameters over time is crucial if you want to sell a quality product.
The EL 84 Art series and the KT120 are examples to analyze carefully. Poor reliability ( disastrous for the KT120) and volatility of parameters. If you do not think seriously about it, those who will need power tubes will buy from other manufacturers although, sonically, your tubes are very good.
On DHTs, at least on the more expensive products, you should work better on oxides. Having very good and stable emissive capacitances improves sonic and instrumental performance. On vacuum, on dispersed gases, on cleaning the elements, you are already good.
Still on the subject of DHT, you might think about faithful replicas of European tubes, as the Korean Stradi is trying.
PX4, AD1, RE604 could attract many enthusiasts.
The current EML replicas are ridiculous and have nothing to do with the originals. I can affirm this with certainty, owning the original versions in good quantity.
Would Psvane be able to replicate the ancient european activation processes (Philips and Telefunken), that is, with barium oxides vaporized on the filaments during activation? You could replicate authentic queens.
Thank you so much for your sincere suggestions.
What you mentioned is exactly what we are currently working on, and indeed, they reflect some of the issues we’ve faced in the past — including the handling of oxides.
To address this, we’ve introduced a brand-new coating technology on some models in our latest Horizon series.
As for reproducing classic products, we have recreated legendary models from Western Electric and Philips. We are also actively exploring how to upgrade our reissue series, including which additional models to introduce.
However, this is not an easy task, as the birth of a product with a truly classic sound often involves a degree of unpredictability. Regarding the evaporation of barium oxide, we’ve been conducting experiments on this over the past several years.
Thank you for the kind information but, pardon my curiosity:
If an evolved and somewhat manic enthusiast who is equipped to carefully measure a tube, who has memory and ability to compare having the best of the best at home ( WE300B, UX350, 10Y, 45, 2A3 single plate 20 filament, PX4, AD1 Telefunken, RE604 Globe, RE304, RE134. RE084, L610, etc.), To find really high quality tubes, electrically stable, built to be maximally linear ( properly mounted grid ) and long-lived with sturdy and durable cathodes ( I however never ever use tubes thoroughly. I agree with Imai of Audio Tekne ), what Psvane line of DHTs should I buy?
The Legend line, with the WE replica of the 300Bs, has rather early Gm decay ( they still work but not at their best ). How does the 300B+ differ? Does the ACME series have more stable and better issuing structures?
In my opinion rather than incompletely replicating the 275A, you might think of replicating the legendary PX4 well and philologically. It is a balanced, wonderful tube and much easier to make than an AD1 TFK
If an evolved and somewhat manic enthusiast who is equipped to carefully measure a tube, who has memory and ability to compare having the best of the best at home ( WE300B, UX350, 10Y, 45, 2A3 single plate 20 filament, PX4, AD1 Telefunken, RE604 Globe, RE304, RE134. RE084, L610, etc.), To find really high quality tubes, electrically stable, built to be maximally linear ( properly mounted grid ) and long-lived with sturdy and durable cathodes ( I however never ever use tubes thoroughly. I agree with Imai of Audio Tekne ), what Psvane line of DHTs should I buy?
The Legend line, with the WE replica of the 300Bs, has rather early Gm decay ( they still work but not at their best ). How does the 300B+ differ? Does the ACME series have more stable and better issuing structures?
In my opinion rather than incompletely replicating the 275A, you might think of replicating the legendary PX4 well and philologically. It is a balanced, wonderful tube and much easier to make than an AD1 TFK
Your focus and passion are truly admirable, and your collection is nothing short of impressive. I also fully resonate with your philosophy of not relying solely on vacuum tubes. First, I have a question I’d like to ask: Is your WE300B a NOS WE300B from Western Electric? What equipment are you using it with? How close do you feel our WE300B is in terms of pure sound quality compared to that product?
If you were to ask me which DHT product offers the best quality, I sincerely recommend considering our ACME series. This series has been on the market for several years now, with excellent and stable performance. The main difference between our WE300B and 300B+ in the Legend series lies in their durability and rate of degradation—300B+ is more reliable. However, I would still suggest you consider the ACME series, as the Legend series is one of our earlier works and is somewhat dated in terms of technology. We are currently considering whether a full upgrade of this series is necessary.
Regarding the reproduction of the PX4, we have indeed considered and experimented with it. As you know, achieving a truly high-quality vacuum tube involves some degree of randomness, and we won’t release it until we’re confident that its sound quality meets our standards.
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