Yes, there is no copy, but there is a very good alternative.
The 6080 Sylvania is a good tube and relatively cheap.
It is a bit more organic than the Mullard, and the price is not as low as the Mullard.
Otherwise I had the impression that everything is very similar.
Or rather, that was the only thing I noticed.
Roughly speaking, I’d say it’s the closest tube to the Mullard.
The Gold Brand Sylvania 6080 is the one to look for…that one outshines the regular Sylvania 6080. And about half the price of the Millard. If you look around, you might find one. I had three of them at one point and gave one away to a member. Another 6080 worth looking for is the Tung Sol 6080.
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Add me to the list of people who can vouch for the Tung-Sol 7236; across the board it is an improvement vs stock, and the noise floor has dropped significantly. Thanks again @JKDjEdi
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Hello!
I’ve had a Darkvoice for the last few months and I want to change my tubes. I’ve heard great things about the tung-sol variants and I found this 6SN7:
https://www.amazon.com/gp/product/B07MKLN3RV/ref=ewc_pr_img_1?smid=AET5JO4MVOEWM&psc=1
The thing is I’m not able to find the power tube (tung-sol 7236) on Amazon. This is a deal-breaker for me because I live in South America so yeah. My question is, ¿Is it worth it to only change the 6sn7 tube? If not, ¿Any common tube you would recommend to go along with the tung-sol 6sn7?
Cheers!
That one is just ok compared to what’s available in NOS tubes. New Old Stock of the 40’s 50’s and 60’s. Now if you can find a black based Tung Sol …6SN7GTB or a grey glassed RCA 6SN7GT, or even a Westinghouse (Reliatron) 6SN7GTB (D shaped getter) you’d have a better experience than with the Russian made (red based) Tung Sol. And yes the Output Tube (the large tube in the back) does make a difference. The one (not expensive) output tube that’s good for beginners is the Winged C Svetlana 6H13C . (6AS7 equivalent) yes Russian made, but they’re NOS 1970 and below… Not expensive at all. Want something nice… Mullard 6080, Chatham 6as7g, Tung Sol 5998, Bendix 6080 (Graphite plated) and middle road would be any 1950’s Army Navy issued RCA 6as7g… Good Luck!!
Interestingly enough I actually preferred the stock 6AS7G over either the Winged C or 1950s RCA JAN.
The stock tube? 
I gave them a listen after my little collection grew and trashed them after a sit down. My favorites are the Western Electric 421a, Bendix (slotted graphite plates) 6080, Chatham 5998, Chatham 6AS7g, and GEC 6AS7G. When I want something different I’ll try a Tung Sol 6520, Sylvania GB 6080, Chatham 6080, and maybe the Cunningham (RCA) 6AS7G. The 6H13 Winged C rarely gets used. Might have a few in there that Ived missed but way too many. I only listen to them on the weekends in the mornings, and that’s if I’m home…
So my tubes rarely get used. I have to do an inventory soon of my driver tubes. Ive honestly forgotten what I got. I know I have some keepers in there. Or should have some…
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Yup. I forget which one it was but one of them I found to sound somewhat bright by comparison (not the sound i am going for), and the other gave the midrange somewhat of a hollow-esque quality which I found unpleasant. Like I said before, though, the 7236 by comparison appears to be quite noticeably better. It’s too bad that there aren’t any good ways of properly ab-ing tubes without owning a second amp.
It’s a deep rabbit hole… . I keep warning my coworker who wants to get an amp… 
so much to learn from this hobby.
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Psvane CV181-T Mk2
Very clean sound compared to a lot of other tubes I’ve tried. Sounds great with the Auteur, but the 6xx sounds better with the Tung Sol imo
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The two biggest improvements I have discovered with the DV have been using the Schiit Valhalla 2 as a pre-amp, setting & leaving the volume on the DV to about 7 o’clock, and then hooking both units up to a power conditioner. I have tube rolled a bunch but these two changes made the biggest differences.
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There’s a few good tubes here if anyone is interested, it’s a UK Website.
Grabbed a kenrad fat base white label 
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Where did you get your adapter from I can only find clear weird looking ones
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I wanted to know if the adapters add noise to the amp? is this is the case I heard rumors of that with other amps
No, everything’s fine.
I bought some from him and he is serious.
You can rely on it.
If there is something wrong, just talk to him, he is quite unproblematic.
The adapters are quite stable.
mostly with Chifi adapters, Deyans adapters are way better and custom built.
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Sweet ill have to order one. So sounds like they’re significantly better but regardless there will be extra noise added?
Hello,
You can’t say that.
I have Euforia socketsavers on my Feliks and there is a slight buzz.
But it went away when I plugged it in.
The adapter depends on what tube you want to use.
So if you plug in an adapter from 6sn7 to KT 66 with a tube on the Darkvoice.
This can produce noise, but it doesn’t have to.
It depends very much on how well the Darkvoice would cope with it.
This is normal as every tube amplifier reaches its limits at some point and of course was not designed for this.
This is the case with the Feliks Euforia, for example.
Feliks knows about this and recommends not to experiment with adapters because it can destroy them.
It really depends on certain experience values that are discussed in the community, have been tried and what also achieves a good result.
But if you are just looking for a simple socket saver, then stay away from the Made in China market, they are really bad and not worth the money.
The ones I bought from Aliexpress made a noise and the tube really wobbled.
Better to look at the Eu, Us or Canadian market.
Tubemonger always makes shockproof socketsavers in limited quantities, but they cost a bit.
On the photo, however, they look damn well made.
The price per unit is about $36.
Personally, I’m not a fan of using an amplifier design concept with other tubes with an adapter.
Because, as mentioned, it brings some problems with it.
I see the added value more in capacitors.
Apart from the fact that the Chinese tube amplifiers save money, this can be more of an advantage to replace them.
I have seen this with my Little Dot 1+ after its repair, the defective parts replaced with better or the same parts in better quality and have since then no more problems with the sound or temperature of the device.
The Elna’s were replaced with Nichicon FG as an example, the Op amp with the Burson V5i.
The power supply was replaced with Audionote capacitors purely as an example.