Currently I am trying to getting some of my old builds in action again. Back in 1984 I build a pre-amp based on the line amp (and MC) of the original prelude.
btw, I avoided the other overly complicated printboards of this design.
The line amp in a discrete build opamp see attachment. Back then I replaced the input electrolytic capacitors with MKT types and removed the output elco completely. I included a small circuit to adjust offset on the output manually.
While the sound of the unit is fairly good in my ears it has been build with standard none-audio grade parts, inclusive a big electrolytic capacitor in the feed back line. And of course it's a very old design.
Would it be worth it to try to improve the pre-amp? Could I use an auto offset correction as implemented in the crescendo millennium? (if yes how?)
Any ideas which other changes would give me a worthy sound improvement?
I don't mind spending some $$$ but don't want to go over the top (like 2 X 220 uF foil capacitors).
btw, I avoided the other overly complicated printboards of this design.
The line amp in a discrete build opamp see attachment. Back then I replaced the input electrolytic capacitors with MKT types and removed the output elco completely. I included a small circuit to adjust offset on the output manually.
While the sound of the unit is fairly good in my ears it has been build with standard none-audio grade parts, inclusive a big electrolytic capacitor in the feed back line. And of course it's a very old design.
Would it be worth it to try to improve the pre-amp? Could I use an auto offset correction as implemented in the crescendo millennium? (if yes how?)
Any ideas which other changes would give me a worthy sound improvement?
I don't mind spending some $$$ but don't want to go over the top (like 2 X 220 uF foil capacitors).