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Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

My first tube preamplifier:)
My first tube preamplifier:)
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Old 27th September 2006, 10:35 AM   #1
whee is offline whee  Norway
diyAudio Member
Join Date: Jan 2004
Location: Oslo
Default My first tube preamplifier:)

This is my first tube preamplifier project.
It is a simple phono amplifier with passive RIAA equalization, but it sounds great I got the schematics from this site

The inside



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Old 27th September 2006, 10:44 AM   #2
Mikael Abdellah is offline Mikael Abdellah  Sweden
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Join Date: Jan 2003
Location: Sweden
Nice work. I especially like the shielding around the transformer. Looks really good. I might try the circuit sometime myself with 6N1P.
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Old 29th September 2006, 11:01 AM   #3
mantisory is offline mantisory
diyAudio Member
Join Date: May 2002
Location: toronto
Default so..

How does it sound after a couple days? Any first impressions?
Also, from the layout it looks as if you used the first power supply he listed...any reasons why you went with that instead of his second suggestion?
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Old 29th September 2006, 12:48 PM   #4
whee is offline whee  Norway
diyAudio Member
Join Date: Jan 2004
Location: Oslo
I think it sounds great. But this is my first tubeamp, and i have nothing to compare it with....
The reason I used the first powersupply, is that i already had all the components for it
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Old 29th September 2006, 01:26 PM   #5
Sherman is offline Sherman  United States
diyAudio Member
Join Date: Feb 2004
Location: Chicago area
Nice work. I also like the transformer shielding, very clever as it both shields and adds to the aesthetics. I'm not a fan of the way open frame transformers look but price makes me use them sometimes!

I've got a decent SS phono-pre but since I think all the parts to this are in my junk... errrr spare parts box I might give this one a go.
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