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


Hi folks,
If you upgraded a point-to-point wired tube amp or preamp, what did you upgrade?
I assume capacitors, but was there anything else which you upgraded that made a genuine difference for the sound?
I am looking into improving the caps in my Quicksilver stuff, but before doing that, I am curious if there's anything in addition to caps which I should consider.
Thanks.
128x128hilde45
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I love the smell of solder in the morning 
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Think you may already be there but TUBES, TUBES, TUBES!
Great NOS tubes will radically improve the SQ. Maybe more than anything. Mike is a great guy. Call him and ask for his recommendations.
Please share the QS models so I can be very specific. Need to see the space you have and what’s in there now. QS gear is a great brand to upgrade. They are built very well, point to point, simple circuits, and built with modest parts quality. I think QS gear would respond very favorable to some well thought out and executed upgrades. The same sort of upgrades the builder would do if not trying to sell at a given price point.


Sold every single piece of gear I ever upgraded/modified with no problem and happy buyers. Well done upgrades, professionally done, have a good sized market out there. I must have sold over 25 modified/upgraded pieces of gear. Always sold pretty fast.