Question About Capacitor Upgrade in Tube Amp

Take pictures of every section you are working on before you start and after you finish

Very good advice. Especially when there is no schematic available!

But to be honest I do not take any comments personally. Unfortunately there is always some character lurking around a forum who is unhappy and wants to share that negativity with others. I see it more as a cry for help than a personal attack.

Good points and I see more clearly your perspective. You have received some very good insight on this thread. I look forward to your listening outcomes.

Charles

@millercarbon 

What I have found useful:

https://www.humblehomemadehifi.com/Cap.html

I just wanted to take a minute to thank you for the link. It was indeed very helpful.

I can definitely hear a difference in the clarity of vocals and the separation of instruments between the X7 vs the X9 and X10. So let’s see how this upgrade works out once I get the parts.

There’s a lot more going on than just the caps. Power, impedance, source, cables, loudspeaker, tube age, wire, sockets, etc. etc. Change one thing, change everything.

To those who don’t like the tone:

Are you fine with people being seen off by charlatans that give bogus reasons with ZERO supporting evidence other than their say so? They think their system sounds the same every day or that they can turn it off for some time, make a change and then determine a delta. Ha! Qualified engineers listen for weeks, making comparisons between a reference unit and the changed. Confirmation bias plays a huge part in an awful lot of opinions.

I’ve been at the HiFi game for more than 50 years, Grammy nominated engineer and if you saw a movie from about 1990 to 2010, quite possibly the soundtrack was recorded through something I designed.

Some posters blather on about changes without the slightest regard for rigor. To boot, they evaluate whilst intoxicated and at injurious levels. I endured too many sessions with doped up musicians to have any tolerance for audiophools.

PAX.

Engineers with ears pick caps where the evaluation circuit and signal allow them to be fully formed… in many cases those big monster caps never get fully formed… or stay formed…especially at reasonable listening levels…

Applaud the OP for diving in and trying….and learning…

Enjoy the music and the journey