Would this valve preamplifier be suitable as a headphone amp?
http://www.oatleyelectronics.com/kits/k055.html
http://www.oatleyelectronics.com/pdf/k055.pdf
http://www.oatleyelectronics.com/kits/k055.html
http://www.oatleyelectronics.com/pdf/k055.pdf
Hi,
Not likely, output impedance is rather too high.
If you look at the circuit you'll also notice the tubes have hardly any gridbias which means they're being driven positive with a CDP as line source already.
Halo,
The 12V AC is simply the two 6.3V heaters wired in series.
The 6J6 is the same as the European ECC91...not exactly an audio tube in my book.
Cheers,
Not likely, output impedance is rather too high.
If you look at the circuit you'll also notice the tubes have hardly any gridbias which means they're being driven positive with a CDP as line source already.
Halo,
The 12V AC is simply the two 6.3V heaters wired in series.
The 6J6 is the same as the European ECC91...not exactly an audio tube in my book.
Cheers,
An externally hosted image should be here but it was not working when we last tested it.
Based on the schematic as in the link in post #1. Driving my al' cheapo cans currently.
. A solid state preamp could so better 
Hi all,
I know this is a really old post, but I am desperately trying to track down a copy of the K055.PDF from Oatley Electronics that has the schematic for this 6j6 preamp as mentioned in the first post.
Oatley dont have it anymore and can't get it off their website even with wayback machine/archive.org.
If anyone has a copy and can help it would be very appreciated.
Cheers,
Anzic.
I know this is a really old post, but I am desperately trying to track down a copy of the K055.PDF from Oatley Electronics that has the schematic for this 6j6 preamp as mentioned in the first post.
Oatley dont have it anymore and can't get it off their website even with wayback machine/archive.org.
If anyone has a copy and can help it would be very appreciated.
Cheers,
Anzic.
Hi Anzic,
Understand you been looking for the schematic and i do have a copy...and also have the original project kit unassembled and sitting in my store for the last 8 years..... and coincidently getting into this valve project...Would be great if we could discuss about this ...pls drop a me mail at franbargain@yahoo.com...thanks
Understand you been looking for the schematic and i do have a copy...and also have the original project kit unassembled and sitting in my store for the last 8 years..... and coincidently getting into this valve project...Would be great if we could discuss about this ...pls drop a me mail at franbargain@yahoo.com...thanks
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