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Old 28th January 2007, 03:54 AM   #1
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Default Headphone amp with tube PS

Hey guys,
I have been using tubes for headphones for a good while, and have a pretty nice amp as of right now. But I have been really looking to make a nice amp and want to go with pretty nice stuff.
Total budget would be like $400, but I could be convinced...
I am looking to give a pretty high current, I use Audio-Technica W5000s which are 50 ohms. I am looking to also have a tube rectified PS, I think thats the right wording, and I'm wondering what yall would suggest.
Although it dosent really matter tubes that are big and look cool would always be a +!
Iv read a good bit but im still unsure of exactly waht to build. I would be cool with if there is a PS i should look at and then attach that to an amp design or somethign.
thanks
-greg
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Old 28th January 2007, 04:30 AM   #2
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http://headwize.com/projects/showfil...=cmoy5_prj.htm

give it a thorough read, it seems to put out adequate current.
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Old 28th January 2007, 09:18 AM   #3
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Default morgan jones aka cmoy

same as above, but with tube rectified psu...

90% built, chassis is in the making and about to be painted.






EDIT: for lower impedance headphones the same schematic with nfb might be better...psu is still the same.
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Old 28th January 2007, 09:19 AM   #4
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will look something like this...
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Old 28th January 2007, 11:22 AM   #5
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Quote:
Originally posted by Stixx
will look something like this...

Sexy

Looking forward to the pics


Quote:
EDIT: for lower impedance headphones the same schematic with nfb might be better...psu is still the same.
White-CF are one of my favorite topologies for an ECC88 and family. You may find the compromise of NFB+low-Z phones not worth it. Just my
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Old 28th January 2007, 01:40 PM   #6
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I have heard a morgan jones and really dont think that even if it was built with top tier parts it would best my 6080 12ax7 amp.
I was thinking something with alittle more bite. And ideas?
Thanks for all the suggestions as of yet.
-greg
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Old 28th January 2007, 01:54 PM   #7
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Default more bite....

What about this one??

http://www.tubecad.com/2006/04/blog0062.htm

Built with 6CG7 and 6H30 it should have plenty of drive.
Build any psu you like to go with it...

(PCB's are resting in my drawer...)
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Old 28th January 2007, 04:31 PM   #8
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if you read the article you'd see that the schematic is modified somewhat (#4)...
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Old 28th January 2007, 04:40 PM   #9
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that looks like it could do the trick.
Any links that are expecially good for that amp, the version you are talking about, and a sutable PS?
thanks
-greg
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Old 28th January 2007, 06:15 PM   #10
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Broskie says that the amplifier has very good PSRR, but still a decent psu should be used...
My implication also will have a tube rectified psu, probably dual mono, but for the low impedance variant something like this could do...

I assumed a total current draw of 88mA, using a 5U4 as rectifier. Anything smaller will of course also work but I like the look of those big rectifier tubes...

rgds,
Oliver
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