Output Caps For Dehavilland Ultraverve

How any volts needed D.C. .
i have been using to many surprisethe excellent Fostex Copper foil
Tin toil . One of the engineers said their dialectic is totally different 
then the competition as well as they listened for almost 18 months the correct balances between Copper and tin and dialectic 
and purity ,and temp you anneal. I can tell you I personally feel in my speakers ,and output on my preamp using 3.3uf Fostex they are rich but fast and open the Tin foil I feel make it better in some circumstances to all Copper foil they are better then All MundorfSilver  oil ,and gold oil not tipped up just very natural 
designed to complement the Fostex super tweeter,and single drivers . The only negative is 240-250 Volt D.C. Is max , and 
.33uf , to 3.3uf are max sizes . I have mixed with a Clarity CSA,
and Mundorf Supreme in another speaker and balance very nicely 
.33 for bypass duties is excellent nothing over done what so ever 
with these caps I feel these are better then the Entrylevel Duelund 
caps these are a 13 rating  a personal new favorite priced less 
then a Mundorf Silver oil.  Speakers plenty of Voltage , amp,preamp depending on the circuit well worth checking out 
the improvement on depth of image alone as well as Bass punch 
vs the Mundorfs  or blended together is well worth the trouble 
give 250-300 hours to full runin solid copper leads  , coated ?

Thanks for your expertise and help.  Bill, would I need the Jupiter cap rated at 100VDC or 600VDC?  Also, while it is impossible to put an absolute objective value on the benefit of using the bypass cap, how much of a subjective sound quality difference would you say there is using both caps as opposed to just the Jupiters??

Need the 600v Jupiter. 100v is for speaker crossovers. Expect the Duelund silver to improve everything top to bottom considerably. The impact they have is substantial improving the SQ of the output cap position by some 20%.  

Hi, I own an Ultraverve and a pair of Aries G's. I installed Duelunds and although it took forever for them to burn in, my Ultraverve is now, quite spectacular to hear! BTW, Kara rules !

Steven.

Steven - Which Duelunds did you use?  I see that there are a couple of design variations. Kara, as well as Bill (grannyring) recommended 2.2uf.  Did you use a bypass cap as well?  The Duelunds are rather large, any issues fitting them in the chassis?  I agree that Kara, in addition to being a gifted designer, is a consummate professional and has been extremely helpful and honest...