Everything has limitations. I am working on building x-overs without caps now. Removing caps in the preamp to me has produced the best sound I have ever heard. In my comparisons, the caps get saturated compared to the transformers causing the sound to become (for lack of better description) hard sounds and bright. I don't think that a cap can react fast enough compared to the transformer so they sound a little stressed in direct comparison in my preamp design andother preamps that I modify. I also wind my own transformers because I could not find any company that made them for my design that were not without limitations, even a few custom designed ones. I have spend over three years testing and building transformers to get to where I am happy today. So far, I don't hear the limitations as much as any cap I have tried in the preamp and I have a box full of them. I also tried the Jupiter caps but I still prefer the V-Cap coppers to the Jupiter caps. The V-Caps are much more open, dynamic with more resolution. The Jupiter were a little warmer in the mids but lack the other attributes of the V-caps IMO. So far I have not come up with a design to remove the caps in the amp as mentioned above. But I am working on a hybrid power amp that will also use DHT tubes in the front end, all point-to-point wiring like the preamp I build. Anyone in the NYC area is welcome to come hear what I build or I may consider shipping a prototype one out.
Is there any truth to the rumor that the Jupiter cap having issues with heat from amps (wax melted)? Someone mentioned that they read something about this but I have not taken the time to investigate. I could be way off base here.