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Old 2nd December 2011, 09:07 PM   #1
kees52 is offline kees52  Netherlands
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Default Best sounding voltage amplifier for hybride.

Hi all

I have tested al kind of voltage amps for hybride driving, but what is in yours opinion the best way to create a preamplifier with big swing for driving the cathodefollower of the hybride.
I mean a tube preamp, the old ones seems to sound best.

I have tryed a lot, but she bites not each other very much, so I go soon staring with a new way, a compound amp with mosfets driver be a tube, al parts amplify a bit there is not a kathodefollower or drainfollower, I think warmth is because of amplifying also with tubes de kt88 and so on amplify.

I can remember me some that was also a a amplifying power stage who sounds a lot better then the common sourche or emmitor follower who has so much geedback on his own.

be followed.
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Old 3rd December 2011, 03:26 AM   #2
Bigun is online now Bigun  Canada
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Hi Kees,

There are very positive reports of the 'Aikido' preamplifier being very neutral - i.e. it has no 'sound'.

If you want 'sound' then look at simple common cathode amplifier.
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Old 3rd December 2011, 03:39 AM   #3
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Here was my version:

Wavebourn Tower-III High-end hybrid amp
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Old 3rd December 2011, 11:42 AM   #4
kees52 is offline kees52  Netherlands
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I have try aikido, it is indeed very neutral, but I miss warmth, here I have a sound peace of the amp I now use, a hybride with dc coupled el84 to mosfets, a tracker for offset and a aikido like voltage amplifier.

here some audio samples if you can see it because youtube has block it worldwide richts are the problem, child behavior of them, it was blocked in minutes after put it there.

http://www.youtube.com/watch?v=kyqKZqDMtW4

I have also my shipment from russia, al kinds of tubes in it, so I can experiment, the supply trafo is already ready, wound it myself.

And if I succeed my dog guard it.
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Old 3rd December 2011, 11:52 AM   #5
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Quote:
what is in yours opinion the best way to create a preamplifier with big swing for driving the cathodefollower of the hybride.
Make a casode amp. NMOS fet at the bottom and triode (say 6N1P) at the upstairs.
Very linear up to 200 Vpp out (with 400 V supply voltage).
Should be enough for most purposes.
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Old 3rd December 2011, 12:30 PM   #6
kees52 is offline kees52  Netherlands
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Quote:
Originally Posted by artosalo View Post
Make a casode amp. NMOS fet at the bottom and triode (say 6N1P) at the upstairs.
Very linear up to 200 Vpp out (with 400 V supply voltage).
Should be enough for most purposes.
why not a cascode with the use of both triodes? without a fet.

I go test this afternoon, there is rain here so, nothing else can be done.

thanks all for your advise keep posting in our run for perfect audio.

more and more, whole tube amps seems the best.
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Old 3rd December 2011, 03:23 PM   #7
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Quote:
why not a cascode with the use of both triodes? without a fet.
Much bigger distortion.
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Old 3rd December 2011, 05:23 PM   #8
kees52 is offline kees52  Netherlands
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Originally Posted by artosalo View Post
Much bigger distortion.
to high resistance for drive.

Distortion is what make the sound.
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Old 3rd December 2011, 05:44 PM   #9
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Quote:
Distortion is what make the sound.
Then make a amplifying stage with a single triode and use low supply voltage. You'll get a lot of sound.
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Old 3rd December 2011, 05:52 PM   #10
kees52 is offline kees52  Netherlands
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Originally Posted by artosalo View Post
Then make a amplifying stage with a single triode and use low supply voltage. You'll get a lot of sound.
No just don,t use feedback, and I need power for my transission lines, it need power and so I use this on the moment.

the normal SRPP works best until now, and so I try to find a update again, that is this hobby, the end is never near.
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