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Old 18th February 2008, 01:12 AM   #1
Jaime is offline Jaime  Uruguay
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Default one stage DHT amp

The Russian tube 4P1L is direct heating pentode, 8w plate and 10~12 gain.
http://www.gstube.com/catalog/?bl=1
http://www.klausmobile.narod.ru/testerfiles/4p1l.htm
I believe it will be an nice small one stage amp similar the Gordon Rankin EL84 but direct heating!!!.
http://www.audioasylum.com/forums/ma...sages/426.html

Is Possible?

best regards Jaime
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Old 18th October 2010, 10:12 AM   #2
mik190 is offline mik190  Russian Federation
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Quote:
Originally Posted by Jaime View Post
The Russian tube 4P1L is direct heating pentode, 8w plate and 10~12 gain.
''GSTube.com''. Tubes, sockets etc. Tubes.
Tube Tester Files - 4P1L
I believe it will be an nice small one stage amp similar the Gordon Rankin EL84 but direct heating!!!.
MagneQuest Forum - Simple 84 - Gordon Rankin, June 18, 2004 at 10:44:59

Is Possible?

best regards Jaime
Hi, 4p1l is wonderfull for low power SE amplifier, It sounds very linear and very detailed. In some cases it is similar to legendary 6c33c by sound, but is much easier for DIY because of much lower voltage. But it need schemes with interstage transformer to show the best result. I used it in 1.5-2w output 8Om schematics
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Old 18th October 2010, 12:31 PM   #3
utopia is offline utopia  Poland
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Quote:
Originally Posted by Jaime View Post
The Russian tube 4P1L is direct heating pentode, 8w plate and 10~12 gain.
''GSTube.com''. Tubes, sockets etc. Tubes.
Tube Tester Files - 4P1L
I believe it will be an nice small one stage amp similar the Gordon Rankin EL84 but direct heating!!!.
MagneQuest Forum - Simple 84 - Gordon Rankin, June 18, 2004 at 10:44:59

Is Possible?

best regards Jaime
just give advice without a problem drive the

my preamplifier for 4p1ł

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