6H30Pi variants

Jesse · 2nd April 2003, 05:07 AM

Hi,

there are different suffix for this tube:

6H30Pi - EH
6H30Pi - EB
6H30Pi - DR

Is there any one knows the difference?

Thanks!

Jesse

fdegrove · 2nd April 2003, 01:25 PM

Hi,

6H30Pi - EH : normally EH is a suffix used by Electro Harmonix.

To the best of my knowledge they never carried it though so I wonder who's been rebranding those.

6H30Pi - EB : The EB suffix used on Russian tubes indicates special quality such as long life, extra ruggedized etc.

6H30Pi - DR : here's a datasheet:

TUBES.RU

Cheers,

TG · 2nd April 2003, 01:26 PM

Letters in suffixes of Soviet tubes:
E - long life
B - high reliability
D - extra long life
R - extra high reliability
È (I, not H) - intended for pulse mode

Good Luck!!!

Jesse · 3rd April 2003, 12:11 AM

Thanks, Guys!

Brett · 3rd April 2003, 01:20 AM

All types of 6H30 are <i>good things</i>

TG · 3rd April 2003, 07:26 AM

Quote:

Originally posted by Brett
All types of 6H30 are good things

Nope

Old (<1992) Saratov-made 6N30P-DR ARE good things...
New Sovtek tubes are not...

fdegrove · 3rd April 2003, 08:24 AM

Hi,

Quote:

Old (<1992) Saratov-made 6N30P-DR ARE good things...

Interesting...Do you mind telling us more?

Ta,

Brett · 3rd April 2003, 10:28 AM

Quote:

Originally posted by TG

Nope
Old (<1992) Saratov-made 6N30P-DR ARE good things...
New Sovtek tubes are not...

Most of the ones I've used are older, but they're getting harder to get. Do you have a source? I'd like a dozen or so.

TG · 3rd April 2003, 11:39 AM

Quote:

Originally posted by fdegrove
Interesting...Do you mind telling us more?

You're welcome

Old Soviet 6N30P-DRs were intended for military use ONLY. That's why they have much more rugged construction and closer tolerance than present "consumer" tubes... "Oldies" have lower Rp, higher linearity and can easily handle their 8W dissipation. They also sound much better

...
As for me, new Sovtek ones have somewhat "transistor-like" sound

Quote:

Originally posted by Brett
Most of the ones I've used are older, but they're getting harder to get. Do you have a source? I'd like a dozen or so.

I live in the country wich was a former Soviet republic, so sometimes I have a chance to get several tubes... To collect a dozen, one has to live here for about 5 years, I'm afraid

And I believe that original 6N30P-DRs are not available anywhere else in the world

, even Balanced Audio Technology sells Sovtek ones.

TG · 4th April 2003, 07:32 AM

Quote:

Originally posted by TG
And I believe that original 6N30P-DRs are not available anywhere else in the world

Whoops... I was wrong

...
www.tubes.ru currently have some original 6N30P-DRs in stock at $18 each...

Good Luck!!!

2nd April 2003, 05:07 AM	#1
Jesse diyAudio Member Join Date: Nov 2002 Location: Taiwan	6H30Pi variants Hi, there are different suffix for this tube: 6H30Pi - EH 6H30Pi - EB 6H30Pi - DR Is there any one knows the difference? Thanks! Jesse

2nd April 2003, 01:25 PM	#2
fdegrove diyAudio Senior Member Join Date: Aug 2002 Location: Belgium	RE:6H30Pi variants. Hi, 6H30Pi - EH : normally EH is a suffix used by Electro Harmonix. To the best of my knowledge they never carried it though so I wonder who's been rebranding those. 6H30Pi - EB : The EB suffix used on Russian tubes indicates special quality such as long life, extra ruggedized etc. 6H30Pi - DR : here's a datasheet: TUBES.RU Cheers, __________________ Frank

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2nd April 2003, 01:26 PM	#3
TG diyAudio Member Join Date: May 2002 Location: Kiev, Ukraine	Letters in suffixes of Soviet tubes: E - long life B - high reliability D - extra long life R - extra high reliability È (I, not H) - intended for pulse mode Good Luck!!!

3rd April 2003, 12:11 AM	#4
Jesse diyAudio Member Join Date: Nov 2002 Location: Taiwan	Thanks, Guys!

3rd April 2003, 01:20 AM	#5
Brett diyAudio Member Join Date: Jan 2002	All types of 6H30 are <i>good things</i>

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