Capacitor upgrade for prima Luna dialogue premium HP

I’d fix the current issue, sell the amp and buy a better one. You can never 1) know what sonic changes the upgraded caps will result in and it could be a move in a wrong direction, and 2) recoup the money spent on an upgrade. 
IMO it’s not worth doing. 

Try 0.1uF copper bypass caps from Audyn or Duelund.. 

+1 @audphile1    If you plan on selling it, don’ replace the caps.

If you plan on keeping it, ask ChatGPT about sonic signatures of different caps.

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V-Cap CuTF’s are excellent.   But are expensive and large for their values.  They may not fit inside.

I agree with steakster, V-Cap CuTF are excellent!  I must add, a very long break in before sound is optimal.

It all depends on what you’re trying to achieve sonically.  The Vcap Cutf capacitors are very resolving with great air and micro details. However, if you want a capacitor that gives you darn near as much detail, but with more richness and body, then I would suggest the Jupiter copper foils and wax 600 V. The 600 V version takes heat much better. You must first determine if you have the space for either one of these capacitors which are quite large.  Both these capacitors give you more realism, but they do it with a slightly different tonality.

The Vcap Odams are smaller in size and sound absolutely fantastic. They offer a great combination of resolution, realism and richness.  I would strongly consider these as an option.    

I will add one final thought. I don’t like the idea of bypassing capacitors in electronics outside of the power supply.   Bypass capacitors work wonderfully in power supplies and in speaker crossovers. However, in coupling and output positions I find the sound can get rather nervous and “off” The only exception I have found is in the output position in one dac  I modified for folks.