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Old 1st July 2019, 04:58 PM   #8981
soundbrigade is offline soundbrigade  Sweden
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That's an IMPROVEMENT!!

Great done!
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Old 2nd July 2019, 08:06 PM   #8982
JoeAlders is offline JoeAlders  Netherlands
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Almost plain magic!!
Respect!
Well done!!
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Old 2nd July 2019, 08:17 PM   #8983
blackdod is offline blackdod  Europe
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Bravo!!!!
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Old 2nd July 2019, 09:06 PM   #8984
korpberget is offline korpberget  Norway
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Amazing job! Cheers!
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Old 3rd July 2019, 06:08 AM   #8985
zbutmash is offline zbutmash  Ukraine
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Default Headphone Amplifiers on Lamps

Natural marble, I make all the fixings without visible parts


Headphone Amplifiers on Lamps
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Last edited by zbutmash; 3rd July 2019 at 06:11 AM.
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Old 7th July 2019, 11:26 PM   #8986
Dave R is offline Dave R  United States
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Default headphone tube amp

Finally got this headphone amp project done after a couple of years. I guess I had to wait for retirement to find some time.
Case is made of padouk and walnut, with aluminum top plate.
Voltage regulator tubes (0D3) and 5842 triodes.
Khozmo 50k 48-step attenuator.
Really like what I'm hearing.
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File Type: jpg hpAmpLF.jpg (369.2 KB, 215 views)
File Type: jpg hpAmpRF.jpg (351.9 KB, 195 views)
File Type: jpg hpAmpRear.jpg (345.1 KB, 162 views)
File Type: jpg hpAmpwire.jpg (317.0 KB, 209 views)
File Type: jpg hpsetup.jpg (191.3 KB, 219 views)
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Old 8th July 2019, 01:50 AM   #8987
zman01 is online now zman01  Bangladesh
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Nice work Dave R - what headphones are you using?
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Old 8th July 2019, 02:06 AM   #8988
vinylkid58 is offline vinylkid58  Canada
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Quote:
Originally Posted by Dave R View Post
Finally got this headphone amp project done after a couple of years. I guess I had to wait for retirement to find some time.
Case is made of padouk and walnut, with aluminum top plate.
Voltage regulator tubes (0D3) and 5842 triodes.
Khozmo 50k 48-step attenuator.
Really like what I'm hearing.
Very nice! OPT's?

jeff
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Old 8th July 2019, 03:09 AM   #8989
Dave R is offline Dave R  United States
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Quote:
Originally Posted by zman01 View Post
Nice work Dave R - what headphones are you using?
Thanks. Sennheiser HD600.

Quote:
Originally Posted by vinylkid58 View Post
Very nice! OPT's?

jeff
Thanks, Jeff.
Circuit was designed by Rene'. He had Bud (O-Netics) make the transformers for him. Sorry, don't have specs on them.
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Old 9th July 2019, 01:30 AM   #8990
Wavebourn is offline Wavebourn  United States
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Quote:
Originally Posted by Dave R View Post
Finally got this headphone amp project done after a couple of years. I guess I had to wait for retirement to find some time.
Case is made of padouk and walnut, with aluminum top plate.
Voltage regulator tubes (0D3) and 5842 triodes.
Khozmo 50k 48-step attenuator.
Really like what I'm hearing.
Looks nice. One suggestion: use advantage of a jumper between pins 2 and 7 of VR tubes, to disconnect B+ if a tube is not inserted.
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