Question About Capacitor Upgrade in Tube Amp

On SET amps the key here is not just Caps, resistors and etc but the trannies are the keys elements which will make the amps sound best.   To me it doesn’t make sense to put a $500 caps ( duelund)  on a $1k amp, You are not going take or make that amps sound like a $10k amp. Yes improvement, for sure there would improve compare to the original parts but to what extent, cost and time?  So to summarize it up i personally would not spend so much on caps upgrade unless i know what trannies that are fitted on the unit.  

Alex 

Does anyone compared directly:

1. Vcap CuTf vs Mundorf Supreme Silver Gold Oil?

Vcap Cutf is in the class by itself if untilizing in electronics application. If you are using it for speakers then the Mundorf SGO is a much better cap on speakers. 

i personally would not spend so much on caps upgrade unless i know what trannies that are fitted on the unit.  

The amp comes out of the same factory a Cayin and PrimaLuna. I have seen it reported that there is some amount of sharing of parts. The transformers are indeed decent.

For the Muzishare amps they are made in the Line Magnetic factory. And once again some comments online and photos indicating identical components being used.

Electrolytics are Nichicon so just for the Willsenton they cheaped out on the coupling capacitors.

In a break-out box, I have compared V-caps with Solen teflon f&f  and Relcap teflon f&f. The latter are good and quite similar IMO, and the V-caps are bright. To my ears, in my system, in my comparison. YMMV.

Lots of great recommendations and suggestions on upgrading.  I for one really believe in it.  I went from Janzens to Duelund copper CAST coupling capacitors in my tube-preamp and at first, I thought not such a good upgrade, but after ~100-hours of break-in, wow...  Increased inner detail and for lack of a better term, body in the music. My good friend has a pair of Welborne 300-B SET's that we're going to do a component upgrade to sometime next year.  They sound surprisingly great for their cost and what they are.  Simple circuit and all...  I believe they will sound notably better with these upgrades.  As many have said, please don't judge the switch until you've given some time for break-in !