Jupiter Caps in tube preamp application

Not near tubes. I am going to borrow a thermo gun to get temps inside case

when I first got the preamp it did a LOT of things well, with the exception that it was just a bit hard/forward in the midrange. Looking to mellow it out a bit.

@yes thats it a tone control

OK so I did the swap and it want all that dramatic. Sounds clear as a bell I wouldnt classify it as a tone control. I dont hear any shift in tonality or any emphasis is any one area except maybe a bit stronger in the low bass region. This may be due to a difference in cap value (approved by the designer). I guess there is a break in period hopefully not as long as teflon lol

@millercarbon, thank you for the thoughtful and respectful response. I did notice it was a bit smoother, Not to be confused with loss of detail. I will need to get more listening time in but there may be more detail. I did go from a 0.01uf to 0.022uf so there may be some effect from the value change as well. I'll keep you posted as to break in improvements. Thanks.

Thank you for sharing @andirocks/Scott. Good to hear this feedback as it validates what I am hearing.

Ive heard good things about WIMA and REL Cap as well.

@rauliruegas Will do. BTW I have been thinking about your previous posts regarding accuracy. what is "accuracy" anyway? How can you be sure that once component is more accurate over another. I know I am not qualified to make that judgement. I DO know what I like. So if something has an irritating edge and sounds hard that is more accurate because thats what music sounds like? I am not sure i agree. I stopped chasing accurate years ago. If something sounds like crap, I don't care how accurate it is, I don't like it. I think that most higher end audio equipment is good and is a matter of taste. Compare two $10K DAC's, both are most likely very good, but you will have a preference. And that is OK because you should. I think audio equipment has come a long way and there is a lot of good stuff out there to enjoy. No Stress.

So true, with software today it is easy. So I don't make my own recordings so therefore I am a little behind in that area. I am an older audio guy from way back and I am tired of chasing. I got away from the hobby for 15 years and when I got back I promised I would go back in with my eyes open and just try to build a system that satisfied me and not worry about the latest equipment in the magazines. I am at peace with my system Lol!