Hi,
Posting some pictures of my new all DHT amp being built by Viren.
The amp uses the Russian 4P1L tube. The transformers and chokes are Partridge. It is all 4P1Ls, configured as triodes, with an input/driver triode through an interstage transformer splitter, to push-pull triodes. No global feedback at all. Output power about 4 watts.
My interest in the little known 4P1L tube grew after I got the Lyrita DHT pre. The sound of this tube when used as a triode connected using filament bias as Viren does in his DHT pre is magical.
I started reading up on this tube and came across these threads on DIY audio.
One more 4P1L SE - diyAudio
#26 pre amp - diyAudio
I called up Viren and asked him if he could build one 4P1L based amp for me. Viren too had been following these threads and said yes . I had a spare set of Partridge output transformers and Chokes that were right for a push pull 4P1L amp.
Initial reports from Viren about the sound "It's playing very well - still has to break in as far as the caps go. If I were to use one word to describe the sound - it's "beguiling"! It charms you by drawing you into the music right away. There's a sense of rightness to everything, an ease with which the music flows. Slightly laid back, but that may improve with better resistors in the DHT heater supplies. There's something magical in voices reproduced through it."
The amp will be with Viren for some more time for more tweeks/changes . FM's can drop by at Viren's(at Viren's convinence) home for a listen to this amp.
Thank you Viren for building me the amp and putting up with my telephone calls at all odd hours and my often silly questions/doubts.
Regards
Rajiv
Posting some pictures of my new all DHT amp being built by Viren.
The amp uses the Russian 4P1L tube. The transformers and chokes are Partridge. It is all 4P1Ls, configured as triodes, with an input/driver triode through an interstage transformer splitter, to push-pull triodes. No global feedback at all. Output power about 4 watts.
My interest in the little known 4P1L tube grew after I got the Lyrita DHT pre. The sound of this tube when used as a triode connected using filament bias as Viren does in his DHT pre is magical.
I started reading up on this tube and came across these threads on DIY audio.
One more 4P1L SE - diyAudio
#26 pre amp - diyAudio
I called up Viren and asked him if he could build one 4P1L based amp for me. Viren too had been following these threads and said yes . I had a spare set of Partridge output transformers and Chokes that were right for a push pull 4P1L amp.
Initial reports from Viren about the sound "It's playing very well - still has to break in as far as the caps go. If I were to use one word to describe the sound - it's "beguiling"! It charms you by drawing you into the music right away. There's a sense of rightness to everything, an ease with which the music flows. Slightly laid back, but that may improve with better resistors in the DHT heater supplies. There's something magical in voices reproduced through it."
The amp will be with Viren for some more time for more tweeks/changes . FM's can drop by at Viren's(at Viren's convinence) home for a listen to this amp.
Thank you Viren for building me the amp and putting up with my telephone calls at all odd hours and my often silly questions/doubts.
Regards
Rajiv
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