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Old 15th August 2012, 02:52 AM   #71
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Location: HoChiMinh city
Originally Posted by kevinkr View Post
My power supplies tend to get somewhat complex, are tube based, generally regulated and obviously use feedback in such a case. (Low noise, low source impedance, relatively stiff and impervious to line born disturbances.)
Could you share how to get it ? any schematic ?

WRT to the battery bias I am not sure it sounds any better than a very well filtered bias supply, but it is one of those silly things that amuses me these days so I do it. (See my Muscovite phono thread in analog source for how many batteries and chokes you can put in a phono stage. )
Do you take a battery for gird bias in the 1st stage ? whith this, you can ignore a Ck (a bad Cka must worsen sound quality much).... so sound is maybe improved . For me, the lesser electric capacitor in the line of audio signal is the better.
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Old 19th August 2012, 09:20 AM   #72
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Hi davorin,

Originally Posted by davorin View Post
Curves for triode connection RS1003 and SRS551 tubes (...)
Here's another plot: another plot.

Regards, Tom
If in doubt, just measure.
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Old 20th February 2013, 12:38 AM   #73
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I take lowering gain and increasing current for 1st stage, sound become stronger, more dynamic but less sweet a bit
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