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Upgrade capacitors in tube amplifier?

I have upgraded crossovers with very good results.  I now have a "very good" IMO chinese tube amplifier that can probably be improved with a couple of capacitor upgrades.  

I don't have a schematic, but I have a picture and I expect some of you knowledgeable folks can point me to/confirm the ones to change.  My thought is to change the two large silver ones first and then maybe the four smaller silver ones (on the circuit boards). 

Would probably replace with something like Jantzen Superior Z-Cap or comparable and go with a higher voltage if space permits.  

https://imgbox.com/rtBfoyg0

Thoughts?


chinook9

Showing 1 response by sns

sns
3,600 posts
 
Both tube rolling and cap and resistor upgrades will improve sound quality. Only question is cost effectiveness. I'd say go for it, while you may spend as much or more than amp originally cost, its a learning experience. Better to start learning on cheaper equipment.

I started learning about parts substitution on cheaper equipment, such that I now trust myself with more expensive equipment.

I recently changed out caps, resistors and all tubes on PrimaLuna Dialogue Four. Miflex, Mundorf caps, Takman resistors, NOS miniature tubes, SED and Svetlana EL34. Sound quality improved to the extent I now consider this amp a real contender to totally stock Coincident Turbo 845. Prior to mods, sound quality just ok.
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