Muzishare X7: Replacing the Tube Bias Potentiometers.

This video covers replacing the bias pots with the high quality Vashay potentiometers linked below and how to add resistors to make the 10K pot work. This is also applicable to the Wilsenton R8 and other fixed bias Made in China amps that use these cheap, prone to fail pots, which melt tubes and destroy other parts when they go bad.

Here is the link for the pots I used in this video, this is the 22mm length shaft version, they are out of stock right now:

https://mou.sr/45d88TR

PRV6SAABJYB25103KA

This is the 16mm length version, some as original, also out of stock:

https://mou.sr/42YAAH5

PRV6SAABGYB25103KA

They do have some of the 16mm shaft length version but these are log taper, which isn't ideal but should still work.

https://mou.sr/42S4kVU

PRV6SAABGYB25103KL

Here we go with another popular made in China KT88 Push Pull Vacuum Tube Amplifier. This one was sent in for repairs of the biasing/meter circuit and a full review + mods just like we did on the Wilsenton R8. So far I'm impressed with the quality of the build and we will do sound and measurement tests in future videos.

You can buy this amp here:
https://amzn.to/3HbkEse

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https://www.skunkiedesigns.com/contact

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https://www.patreon.com/user?u=87080658
https://www.skunkiedesigns.com/donate

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https://skunkie-designs.myspreadshop....