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Old 21st April 2010, 12:00 PM  
SY is offline SY  United States
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Join Date: Oct 2002
Location: Chicagoland
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Default His Master's Noise: A Thoroughly Modern Tube Phono Preamp

After more than 25 years of faithful service, it seemed that it might be time to redo my phono system. After all, I like to think that I've picked up a few tricks in the intervening years... The old system consisted of a VPI HW17-II, a Linn Ittok LVII tonearm, and a Troika cartridge. The Troika was...

Last edited by Variac; 2nd April 2011 at 12:17 AM.
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4th January 2011
Pano's Avatar
Pano
diyAudio Moderator
Dang, that's pretty!

OT, how do you like the brass wool as a solder tip cleaner?
5th January 2011
SY's Avatar
SY
diyAudio Moderator
Pano: As it happens, Cynthia gave me one as part of my birthday present. Works astonishingly well- I wonder for how long?
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley
5th January 2011
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jackinnj
diyAudio Member
One may question why there are TIP50's where there should be MPSA42's -- it simmed a little lower impedance with the former.
10th January 2011
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vinylkid58
diyAudio Member
Jackinnj, you have a PM.

jeff
11th January 2011
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jackinnj
diyAudio Member
I mounted the stock values of RIAA components on the bottom of the board, then used the headers shown with which to parallel in additional C or R. You can also see the paralleled resistor to get the first stage CCS@20mA:



31st January 2011
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jackinnj
diyAudio Member
HV and Filament supplies on a new and separate compartment -- it will be shielded to protect the innocent and unwary:

31st January 2011
studeb's Avatar
studeb
diyAudio Member
i see you are having waaaaay to much fun with this
3rd February 2011
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HornTube
diyAudio Member
I've build phono-pre's with CCS and pentodes. If you use CCS you can leave the tubes out cos the sound is much more like transistor than tube.
7th April 2011
Arno Pf
diyAudio Member
Hi Guys,

Including some mods here is my version of this fantastic design:
(In Dutch, but at least the pictures are clear for everyone)

Arno

MC Element met SUT upgrade
7th April 2011
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SY
diyAudio Moderator
Wish I could understand it.
You might be screaming "No, no, no" and all they hear is "Who wants cake?" Let me tell you something: They all do. They all want cake.- Wilford Brimley

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