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Old 19th April 2008, 02:49 PM   #1
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Default I'm Looking for this Similar Schematic !

this is small and tiny amp.
I'm looking for this small tube amp schematic... if anyone can suggest me ?

http://www.6moons.com/audioreviews/muvac/muvac.html
or
http://www.yourmaclifeshow.com/node/195


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Old 19th April 2008, 04:18 PM   #2
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http://www.roehrentechnik.de/html/kolibri.html

Regards Andreas
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Old 19th April 2008, 04:23 PM   #3
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Not the same amp, but similar tubes.

http://www.roehrentechnik.de/html/kolibri.html

Click the image to open in full size.

Click the image to open in full size.


Enjoy,

-- josé k.
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Old 19th April 2008, 04:27 PM   #4
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Another 5902 creation...

http://www.jogis-roehrenbude.de/Lese...rmann-Mini.htm

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Old 20th April 2008, 11:34 AM   #5
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Thankyou guys for the quick reply,

some questions before I start to choose which one I will build:
1. where to buy that OT Transformer ? I can't find locally.
2. which one is better between two ? in term of sound quality, looks like the Kolibri is better ? why ? proven ?
3. any recommended speaker ? like 103dB ? I have 100 Coral speaker but not good at all. any better than Fostex ? beside Lowther ?
4. which one cost more between two ?

thank you again
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Old 20th April 2008, 11:57 AM   #6
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The circuit design and transformers 53.43 (32 Euros each) are from Gerd Reinhoefer:

http://www.roehrentechnik.de/html/bastel-au.html

Peter Grundig has changed the input tube to the 5744 an designed a new case for the µVAC.

Regards Andreas
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Old 20th April 2008, 02:03 PM   #7
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that's quick, thanks.

I saw this http://www.roehrentechnik.de/
I wonder where is the Schematic and the power output ? the Darling amp.
does it sound better ?

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Old 21st April 2008, 03:48 AM   #8
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Andreas,
any idea why he change the input tube ?
better result ?

seems like you know this guy, can you suggest me which to build for me ?

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