7236 vs 6AS7 ?

Bigun · 17th June 2010, 04:45 AM

I understand that the 7236 can substitute for the 6AS7 and provide a higher mu.

Is the 7326 available or one of those silly-priced tubes ?

How does the 7326 compare with 6AS7 for linearity (under similar conditions) ?

Anybody want to comment on the sound of the 7326 vs 6AS7 ?

jlsem · 12:03 PM

It's more expensive than the 6AS7, but it can be had for reasonable prices on eBay. The Tungsol version is a triode connected two-grid tube and can stand higher plate voltages than the 6AS7 or the 5998. The 7236 is a computer rated 5998.

I can't comment on the sound compared to the 6AS7, but my little 7236 stereo amp seems to have low distortion, although I've never measured it.

John

SemperFi · 17th June 2010, 01:26 PM

Very interesting specks! I might have to try a pair

Cassiel · 17th June 2010, 02:20 PM

Quote:

Originally Posted by SemperFi

Very interesting specks! I might have to try a pair

A good regulator tube for audio. Maybe in that part of the world you could find cheap ones, they're expensive here.

http://www.mif.pg.gda.pl/homepages/f...115/6/6528.pdf

SigFire · 17th June 2010, 02:23 PM

Hello,
...since Pete Millett used 6AS7 and the likes in his Wheatfield-HA-2 headphone amp, you may find some informations here:
Wheatfield
and more specific there:
http://www.pmillett.com/Wheatfield/rolling.pdf

Greez

SigFire

Bigun · 17th June 2010, 04:06 PM

Quote:

Originally Posted by SigFire

Hello,
...since Pete Millett used 6AS7 and the likes in his Wheatfield-HA-2 headphone amp, you may find some informations here:
Wheatfield
and more specific there:
http://www.pmillett.com/Wheatfield/rolling.pdf

Greez

SigFire

I can't get this link to load ?

The 6528 is a 6AS7 on steroids, eats up 5A of heater current

No takers on the sound of the 7326 ?

Cassiel · 17th June 2010, 05:11 PM

http://www.pmillett.com/Wheatfield/rolling.pdf

He says he tried 6080, 6AS7, 6336, 7236, 6528 and 5998. 7236 was the winner.

Bigun · 17th June 2010, 05:23 PM

Thanks - it turns out my browser just can't see that file, I switched to another browser and downloaded it without problem.

pmillett · 17th June 2010, 08:05 PM

One thing to beware of: the 7236 does not have very good heater-to-cathode insulation, unlike most of the regulator tubes (6AS7, 6080, 5998, 6528). I've had some break down at 150V.

Parametrically the 7236 is very much like the 5998. It was actually designed to drive the spindle motors of computer tape drives!

Pete

Bigun · 17th June 2010, 09:52 PM

Ok, then I'm going to try one of those 7236's in my cellini amp (have to build it first though).

I'd love to try a 421A too, but they are going for silly prices and half of them look like duds.

17th June 2010, 04:45 AM	#1
Bigun diyAudio Member Join Date: Jan 2009 Blog Entries: 2	7236 vs 6AS7 ? I understand that the 7236 can substitute for the 6AS7 and provide a higher mu. Is the 7326 available or one of those silly-priced tubes ? How does the 7326 compare with 6AS7 for linearity (under similar conditions) ? Anybody want to comment on the sound of the 7326 vs 6AS7 ? __________________ "The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.

17th June 2010, 12:01 PM	#2
jlsem diyAudio Member Join Date: Jun 2003 Location: Dallas,TX	It's more expensive than the 6AS7, but it can be had for reasonable prices on eBay. The Tungsol version is a triode connected two-grid tube and can stand higher plate voltages than the 6AS7 or the 5998. The 7236 is a computer rated 5998. I can't comment on the sound compared to the 6AS7, but my little 7236 stereo amp seems to have low distortion, although I've never measured it. John Last edited by jlsem; 17th June 2010 at 12:03 PM.

17th June 2010, 02:23 PM	#5
SigFire diyAudio Member Join Date: Dec 2005 Location: Heidelberg, Germany	Hello, ...since Pete Millett used 6AS7 and the likes in his Wheatfield-HA-2 headphone amp, you may find some informations here: Wheatfield and more specific there: http://www.pmillett.com/Wheatfield/rolling.pdf Greez SigFire __________________ S.K.

17th June 2010, 05:11 PM	#7
Cassiel diyAudio Member Join Date: Sep 2004 Location: Madrid	http://www.pmillett.com/Wheatfield/rolling.pdf He says he tried 6080, 6AS7, 6336, 7236, 6528 and 5998. 7236 was the winner. __________________ Hello

17th June 2010, 05:23 PM	#8
Bigun diyAudio Member Join Date: Jan 2009 Blog Entries: 2	Thanks - it turns out my browser just can't see that file, I switched to another browser and downloaded it without problem. __________________ "The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.


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17th June 2010, 01:26 PM	#3
SemperFi diyAudio Member Join Date: Jan 2002 Location: nowhere	Very interesting specks! I might have to try a pair

17th June 2010, 08:05 PM	#9
pmillett diyAudio Member Join Date: May 2005 Location: Dallas (but I am not a Texan!)	One thing to beware of: the 7236 does not have very good heater-to-cathode insulation, unlike most of the regulator tubes (6AS7, 6080, 5998, 6528). I've had some break down at 150V. Parametrically the 7236 is very much like the 5998. It was actually designed to drive the spindle motors of computer tape drives! Pete

17th June 2010, 09:52 PM	#10
Bigun diyAudio Member Join Date: Jan 2009 Blog Entries: 2	Ok, then I'm going to try one of those 7236's in my cellini amp (have to build it first though). I'd love to try a 421A too, but they are going for silly prices and half of them look like duds. __________________ "The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.

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