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Sovtek 6C4Pi

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NoRust

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Sovtek 6C4Pi
« on: 19 Mar 2023, 06:46 pm »
I am new to tubes and want to ask if there are any alternative tubes that can be used as backup/replacements to the Russian made Sovtek 6C4Pi 's.  I recently read and now can't find the reference that these are very specific tubes, limited to a few manufacturers and can only be replaced with a like designated tube. I also talked to a reseller who had these tubes available but they didn't have a way to test this model.  I am a bit confused with this specific tube as I have found plenty of info/advise re other tube types I use.  Thanks and take it easy on this new member with the potential dumb question  :wink:
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SteveFord

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Re: Sovtek 6C4Pi
« Reply #1 on: 19 Mar 2023, 10:28 pm »
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FullRangeMan

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Re: Sovtek 6C4Pi
« Reply #2 on: 19 Mar 2023, 11:28 pm »
My unsolicited advice is dont use impulse tubes ( i ) tô audio, the sound are inferior tô the regular version and time life is shorter.
« Last Edit: 20 Mar 2023, 01:50 pm by FullRangeMan »
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FullRangeMan

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Re: Sovtek 6C4Pi
« Reply #3 on: 20 Mar 2023, 11:45 am »
Quote from: SteveFord on 19 Mar 2023, 10:28 pm
https://www.thetubestore.com/russian-6c4n-6s4p

https://www.thetubestore.com/russian-6c4n-6s4p
 This says Chinese (only) 6Z4
The rectifier tube with similar name are the 6C4P-EV (6Ц4П-EB).
https://retrostore.eu/en/d/elektronka-6c4p-ev-6%D1%864%D0%BF-eb-6z4-cina-ez90-6z31-6x4-1000344/

I think he want the single triode 6C4PI-EB small tube for preamp stage made by Reflector and rebranded by Sovtek.
https://www.thetubestore.com/russian-6c4n-6s4p
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FullRangeMan

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Re: Sovtek 6C4Pi
« Reply #4 on: 20 Mar 2023, 11:47 am »
Quote from: NoRust on 19 Mar 2023, 06:46 pm
I am new to tubes and want to ask if there are any alternative tubes that can be used as backup/replacements to the Russian made Sovtek 6C4Pi 's.  I recently read and now can't find the reference that these are very specific tubes, limited to a few manufacturers and can only be replaced with a like designated tube. I also talked to a reseller who had these tubes available but they didn't have a way to test this model.  I am a bit confused with this specific tube as I have found plenty of info/advise re other tube types I use.  Thanks and take it easy on this new member with the potential dumb question  :wink:
Check with Andrey at GSTube.com he have the Reflector 6C4P-EB (6C4n-EВ / 6С4П-EВ) tube in stock:
https://www.gstube.com/catalog/?key=6s4p&submit=Find

Check the datasheet here:
https://www.gstube.com/data/4909/
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NoRust

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Re: Sovtek 6C4Pi
« Reply #5 on: 20 Mar 2023, 03:40 pm »
Appreciate the input from SteveFord and FullRange Man on this specific tube.  Re the comment on use of impulse tubes - my phono stage uses 4 tubes ( two of the 6C45 and two 6922 )  I easily found a great range of options on tubes for the 6922 but posed my question of the Sovetek 6C45Pi as it appears they are limited.  Being new to tubes I will research further and look into why the use of rectifier tubes.  Thanks...
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FullRangeMan

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Re: Sovtek 6C4Pi
« Reply #6 on: 20 Mar 2023, 04:55 pm »
Quote from: NoRust on 20 Mar 2023, 03:40 pm
Appreciate the input from SteveFord and FullRange Man on this specific tube.  Re the comment on use of impulse tubes - my phono stage uses 4 tubes ( two of the 6C45 and two 6922 )  I easily found a great range of options on tubes for the 6922 but posed my question of the Sovetek 6C45Pi as it appears they are limited.  Being new to tubes I will research further and look into why the use of rectifier tubes.  Thanks...
You said in the post #1 6c4pi and now you are posting 6c45pi that is a rare expensive tube.
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FullRangeMan

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Re: Sovtek 6C4Pi
« Reply #7 on: 20 Mar 2023, 05:28 pm »
There is no substitute for
the 6c45pi IMO.
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NoRust

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Re: Sovtek 6C4Pi
« Reply #8 on: 20 Mar 2023, 08:35 pm »
I stand corrected and you are right FullRangeMan - I did miss a digit in my original post. The tube I am referencing is the Sovtek 6C45 Pi.  You are confirming what I had heard from another source in that there is no substitute for this particular tube.  They seem to be available for about $60 dollars apiece.  Sorry for the confusion and appreciate your insight.
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FullRangeMan

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Re: Sovtek 6C4Pi
« Reply #9 on: 20 Mar 2023, 08:52 pm »
You would email Andrey at GSTubes for a try, just in case he can source in Rússia factories.
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