• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

CR Developments Romulus

Hi!
It's time to replace the Capacitors and tubes in my amplifier.
I have some questions :
Can I replace these Nichicon capacitors with Mundorf Oil?

What are these gray capacitors? And of what value?
Which tubes will be the best?
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