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Capacitor upgrade for prima Luna dialogue premium HP

Hello everyone
 

My amp is in the shop and I am thinking of taking the opportunity to upgrade the capacitors. Previous posts about this amp suggested Jensen copper foil capacitors, but these are no longer obtainable  

 

I was wondering what you all thought might be a good upgrade for this amp? I have been very happy with the Ray Tubes And radiotechnica gain tubes, And I’m looking to obtain a sound of remarkable startling realism. The sound stage is there already…
 

Thank you for your suggestions on capacitors  

r

whyrichard
johnss
680 posts
 

@whyrichard , The Jupiter copper foil are really close sonically to the Jensen copper foil. Have used both. The Non-HP version of your amp has a lot more room to fit almost any size cap. The Jupiters will fit in the HP version but will require some careful placement. The stock PL coupling caps are inexpensive metalized film. 

For the HP version you will need 8 Jupiter coupling caps, and be sure to add two 0.1uf Jupiters to replace those metalized 0.1uf on the voltage rail for the input caps. These will make just as big or bigger difference than the coupling caps. 

larryi
4,578 posts
 

For coupling caps, I like some vintage caps like Hovland and Chocolate Drops (mylar/polyester film caps from Sprague or its licensees).  

baaach
22 posts
 

I still have Hovland caps in my PL for 18 years and they still sound sublime with RFT Siemens EL34s, and a mix of 12ax7 to roll for gains: Mullard box plate, Amperex Heerlen, Telefunken, and Tungsram.  

 

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