Yes, according to datasheet this tube has standard pinout.
But why won't you try an original Soviet 6P15P?
Are they better than EL84 in sound quality?
I can't find any decent 6P15P. Can you recommend any?
2 questions.
1) Is it known by any other names than SV83?
2) Are all Russian or Chinese EL84/SV83/6P15(P) are standard pinout?
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I've used Gold Lion EL84s, the JJ Tesla EL84s and the stock 6P15s in combination with a matched pair of RCA 6FQ7 clear tops. To my ears, the Gold Lions sounded the best, but one of them blew up due to the issues mentioned in earlier threads. Still wanting to try EL84s, I bought a matched quartet of JJ Tesla EL84s and liked them, but surprisingly, the stock 6P15s sound better. I haven't tried any yet, but I would think that Russian 6P15P-EV tubes would sound good in thsi amp, and maybe better than the Chinese stock tubes.
As for the newer version of this amp, a few of us have expressed concerns about the new design:
That's a real shame, because the original design had some potential. I think Suppo took their product design in the wrong direction. If there are any owners of the newer version that feel otherwise, they should chime in.
As for the newer version of this amp, a few of us have expressed concerns about the new design:
- The tubes stand right next to the power supply electrolytic caps. In general, you don't want electrolytic caps exposed to too much heat.
- The power transformer appears to be oriented where magnetic field interference could be a problem. Standard practice is that the power transformer be oriented 90 degrees with respect to how it is actually mounted.
- With everything mounted on the top side of the PCB and seemingly no room to elevate the board to mount components underneath, it would be difficult to switch from the stock Polyester film coupling caps to better and perhaps larger coupling caps like Russian FT-3 Teflon caps, metallized Polypropylene film caps, or Paper In Oil (PIO) caps. If one can find better caps that can mount between the tubes, it must be able to withstand heat.
That's a real shame, because the original design had some potential. I think Suppo took their product design in the wrong direction. If there are any owners of the newer version that feel otherwise, they should chime in.
I didn't know the first version design was still available. If it is, then I would recommend that model, although it lacks a fuse.
I had posted a diagram for a switch and fuse connection for the AC/mains power.
http://www.diyaudio.com/forums/tube...-chinese-el84-pp-amp-cheap-8.html#post2057323
You should read through this entire thread, because there were a lot of answers to your questions provided in the thread. If you really are new to tube audio electronics and the high voltages associated with them, you need to educate yourself by reading the resources mentioned in the stickies in this forum. 275+ volts is lethal and if you're not sure sure how to wire 110VAC, you really need to reconsider taking this one on. If there are any DIY audio groups or clubs close to where you live, start attending meetings and ask more experienced people for help. That's what I did, and usually, a lot of people were willing to help.
We all have to start somewhere, so take your time and learn about safely discharging electrolytic caps in the power supply, working with one hand, etc. My own personal rule is to never work on electronics when I am tired.
Update your Location info in your profile. I'll bet a local member would be glad to help you out.
I really like my amp, but it does run WARM! Okay, it's beyond WARM, it runs HOT.
My next mod will be some ventilation holes.I ordered the amp and I'm picking out tubes.
Since original 6P15 are better than JJ so I guess 6P15P-EVs are the ones to get. Very hard to find. 3 days and I can't find any matched quad.
How does the Mullard reissue EL84 compare against stock tubes and JJ/Tesla's?
I know almost everyone here has used matched pre-amp tubes. But does Suppo's pre-amp circuit really require matched pairs?
From thetubestore.com....
12. Do you match other tubes (for example, pre-amp tubes)?
Circuits that actually require matched pre-amp tubes are so uncommon that we only offer this service on an order by order basis. The price for pre-amp tube matching is $5 per tube and not refundable. Power tubes require matching because the way they amplify sound waves can create exceptionally bad sound if they are poorly matched, but pre-amp tubes generally aren't used this way and so matching them is unnecessary.
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Please explain why anyone would tolerate a differently biased left and right channel???
...and only if someone wants to squeeze out of it the last inaudible drop of output power, but does not have individual bias adjustments per tube.
6P15P were redesigned EL84 for better linearity. Yes, sound quality is better. However, you may squeeze more power in guitar amps from EL84 because you may apply higher voltage on a screen grid. Yes, Svetlana used to sell them under the name SV83. I never saw 6P15P with non-standard pinout (I have to admit, I did not know about non-standard pinout of EL84: it is weird!)
What I don't understand, what the purpose of degrading the amp replacing noble tubes by generic bestsellers?
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