It is more or less the same that Horowitz-Hill found and we a long time ago.
So Trolls, order them in quantity.
So Trolls, order them in quantity.
Hello everyone,
I would like to build a MC Pre after this circuit of Mr. Hiraga Pr?ampli MC Hiraga
Can you please help with some suggestions, maybe including a reliable source for 2SB737?
Thank you!
I would like to build a MC Pre after this circuit of Mr. Hiraga Pr?ampli MC Hiraga
Can you please help with some suggestions, maybe including a reliable source for 2SB737?
Thank you!
Any other low noise bipolar transistor can be used.
You can convert to npn transistors also:
- leave the circuit and transistor connections as they are,
- reverse polarity of both supplies in the schematic and
- reverse polarity of all electrolytic caps.
These hints are for the first picture in the linked article.
You can convert to npn transistors also:
- leave the circuit and transistor connections as they are,
- reverse polarity of both supplies in the schematic and
- reverse polarity of all electrolytic caps.
These hints are for the first picture in the linked article.
I have two MC cartridges: Audiotechnica OC9 mark II and Denon DL-103R. I am currently using a pair of Hashimoto HM-3 SUT’s alternatively with a pair of Siemens T42/2e.
What do you think? According to your experience, would this SS preamp be better sounding than the SUT’s?
Thank you all for the help. I ordered four pcs. 2SB737. I hope they are genuine, they seem to be the real thing.
Merry Christmas to everyone!
Merry Christmas to everyone!
Maybe a datasheet is useful here 🙂
See also here: https://linearaudio.net/sites/linearaudio.net/files/volume1ltejg.pdf
See also here: https://linearaudio.net/sites/linearaudio.net/files/volume1ltejg.pdf
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I use the zeetex low rbb transistors in a phono stage, but I have also used biss transistors.. somehow they tend to sound more crisp and direct. Jfets are dull and noisy but not leaking. A real issue with bjts are base current. I have solved this by running them in floating balanced inputs and then really make an effort to pair the input transistor-pair. I have also made a servoed version where I mirror in the driving currents of each transistor and then let ithe nput DC differential drive the currents. The bjts are so quiet that only one pair is needed
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I made quiet JFet phonos too. You just have to parallel quite a few, cascoded, and you need to find the right types. That is very difficult concerning P-Channel types nowerdays.
Of cause you can make single ended ones with only n-types and still have DC coupling.
One example is the Pearl Two ( not my design ).
One example is the Pearl Two ( not my design ).
I like the Pearl phono.... very good design.... maybe it could be improved with a good psu.
I am sure the psu is an integral part of any amp because it sings along with it.
I use a pair of jfets in the input of my phonostage... and it is quiet. 🙂
I am sure the psu is an integral part of any amp because it sings along with it.
I use a pair of jfets in the input of my phonostage... and it is quiet. 🙂