I plan to upgrade my 834P. I have changed the tubes and the power cord. As the unit appears to be very sensitive to vibration, I also use vibration control below and above. What in your experience should it do next.
Yes. So far you have been applying effective tweaks. The full capacitor and resistors mods will greatly improve the 834P. I will second Mitch, but I've heard of good results from Great Northern Sound and others.
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