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.
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