Capacitor

These are tube amps and I do not wish to change them in near future so kindly suggest something which will give a more 3D holographic image

Canary Audio amplifiers do tend to have high input impedance.
@jasbirnandra you're in good hands with guidance from @grannyring😊.
Charles 

With tube amps you are good with output caps from .47uf to 2.2uf.  If you want a more holographic image I suggest two cap brands.  
- VH Audio Odams 
- Duelund CAST CuSn - tinned copper version 

What do you think of the Audyn, miflex or the Rike Audio Q cap if you have heard them.
I need 4 caps and the brand mentioned above are going to cost a lot. 

No doubt that the cost can escalate with having to acquire 4 capacitors depending on the particular one chosen (Interior space is a consideration as some capacitors are large). I can absolutely vouch for Duelund CAST Copper  foil capacitors. 

 Put them in my Speaker's crossover (Only required 1 per speaker) and as output coupling capacitors in my DAC. This was grannyring's suggestion to me years ago.   Simply superb sound quality outcome in both instances. Worth every single penny to do so.
Charles