Jolida JD 502B - Premium Package

1 Review

Availability: Usually ships within 24 hours.


Tube upgrade package includes

This is a premium retube set for the Jolida JD 502B tube amp. These vacuum tubes provide excellent tone at a reasonable price and the most popular combination recommended by customer feedback.

We’ve been supplying tubes for over 20 years. Use our extensive knowledge, experience and customer feedback to select re-tube packages that will work great in your tube amp.

Also Available:
Upgrade PackageUltimate Package

Additional Information and Downloads

Premium Package - Click for more information.

Bias Type:Adjustable Bias

Warranty Information and Return Policy

Warranty may vary for tubes in this package. See included tubes webpages for specific warranty details.

Ratings & Reviews

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Jolida 502 A


At first I was really excited about the "bloom" and sound stage/volume of these premium tubes. But one year later (and possibly because I own a 502 A and potentially the bias may be skewed to the evolution of the electronics), I find the noise floor loud and irratating, and I long for some of the "tube magic" I had before with the 6550's. Love The Tube Store though, and have had great advice and customer service.