Martin kindly sent me a couple of pictures of his latest DHT preamp incarnation of the 4P1L Siberian:
Here are some notes from Martin about his pre-amp:
“A bit more about the circuit, I have built the power supply around the nice AZ1 mesh rectifier. First cap after the rectifier is an obligato 6,8 UF oil followed by a 10H choke and a 100 UF ASC followed by the SSHV2 that I purchased via DiyAudio group buy. On your suggestion I have used the CCS from your 301A preamp. If I refer to my previous preamp with the EF6 penthode in triode connection in parafeed configuration I can say that the 4P1L preamp sounds more detailed and with more air around the instruments. Finally I will do some tests with different output caps to find out if this makes a difference. At the moment I use the Vitamin Q.
Best regards,
Martin”
Why Siberia, Siberia is just a part of Russia http://en.wikipedia.org/wiki/Siberia. That should be called Russian.
Hello from Russia!
Svetlana
Hi Svetlana,
I was explaining to my wife about 18 months ago about the 4P1L. We were looking for a name for the DHT preamp when she suggested the Siberian as a nice name. She liked it, so there you are….
Found a pair of 24a finally, so will let you know when they arrive in a couple of weeks….
Ale
The title is another matter. As the ship you will name so it and will float…
Congratulations on your successful application.
Svetlana