Tube Amp, Preamp upgrades -- what did you do that improved your units?

Re: Mundorf EVO Silver-Gold (non-oil) version sku #80510 is smoother, .22uF 1000vdc, and is not "tipped up". Actually,  the non-oiler version caps are better sounding than the Silver Gold Oil (SGO) version with oil in amps.  Yes, the opposite of what most might think about adding "oil". I learned this from an amp designer colleague when using them in my larger Cary amps, Cary preamps, and now using them again in my Quicksilver Mono 120s with KT150 tubes. 

>>They DO sound more pronounced until fully settled in. Easy to get impatient<<

Kinda discovered this by accident after not wanting "oil" caps that dry out in my prior big amps that get hot. 200hr burn-in required on the non-oiler version cap too, and it is an aggravating roller coaster ride before the EVO silver-gold non oil caps truly form and stabilize to their final set point. Sounds nice when they do.  

Yes, the EVO line is not as tipped up. Agreed.  I have used them in crossovers where I needed larger values and had little space.

Look at Miflex films as a competitive alternative to Jupiter/Dueland. 

"@grannyring ...You can use the Odam 2.2 uf there. In this output position 2.2uf is perfectly fine. This position is not the same as the stage coupling caps we discussed not changing the value of."

grannyring, interesting, I wanted to ask you about this for hilde45 if you felt jumping from 2.0 to 2.2uf was okay or not for the QS LS. Not seeing a lot of 2.0uFs out there any more like the old vintage stuff.  Good to know. 2.2 it is!   

Thanks and I'm glad to see some agreement about the non-oil Mundorf SG's.
It's confusing enough to choose between brands, let alone there being such differences within a brand.
And, as opposed to tubes, once these pups are soldered in it will be a harder call to reverse them.