jfet IV stage completed!
After working on the jfet stage on and off for two weeks, it is finally completed and integrated within my DAC.
I used 2 x matched 2SK170BL as provided by Spencer for each i/v board. I set the current source at the bottom at 4mA, the higher side of the recommended range of 2mA - 4mA. I didn't experiment 2 vs 1 2sk170 for the input device as I don't have the spare time to try out the different options for the input device but, to my ears, 2 x sk170 already sounds pretty good. I bet it will be even better once the boards are fully burned-in.
Thanks Spencer for your advice you had provided when I was doing the mod project!
Moe
After working on the jfet stage on and off for two weeks, it is finally completed and integrated within my DAC.
I used 2 x matched 2SK170BL as provided by Spencer for each i/v board. I set the current source at the bottom at 4mA, the higher side of the recommended range of 2mA - 4mA. I didn't experiment 2 vs 1 2sk170 for the input device as I don't have the spare time to try out the different options for the input device but, to my ears, 2 x sk170 already sounds pretty good. I bet it will be even better once the boards are fully burned-in.
Thanks Spencer for your advice you had provided when I was doing the mod project!
Moe
MALZA said:Hi spencer
Your IV stage is unbalenced
Have you one IV stage Balenced?
Thx
Matthias
i think for balanced, just used 2 per channel..
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