Capacitor upgrade for prima Luna dialogue premium HP

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.  

I used V-Cap ODAM in a Cayin Jazz 80 (same manufacturer) and they made a significant improvement in both bass and high end as well as overall clarity.

The Cayin amps actually sound better than Primaluna as the later has too much negative feedback in the circuit - gives it that punchy bass at the cost of clarity and treble.

For coupling caps I like the Jupiter Copper Foil Wax; these are readily available.  They are quite small; I have them in both of my Elekits and like the organic sound.  Jantzen Silver foil are very transparent but not quite as natural sounding IMHO.

If you are looking for bypass caps Kemet and Nichicon are excellent.

If you can do it, replace the electrolytic power supply capacitors with polyproline for better ESR, more margin for higher voltage rating, and because electrolytic capacitors have a limited shelf life, polypropylene do not have to be replaced every few years.