Orland Park


Yellow Jackets YJUni Power Tube Adaptor w 1x EL84 Power Tube

A Yellow Jackets YJUni Power Tube Adaptor w 1x EL84 Power Tube in Very Good condition!

At Evolution Music, we attempt to highlight cosmetic defects (if any) by picturing every angle of every piece of gear so you know exactly what you are getting.  We always picture any and all accessories too.  What you see is what you will get so please check out the pictures!  Everything we sell has been tested and is fully functional unless otherwise noted. We have a 5 star rating from 1000+ happy customers across our three locations.  Please message us if you have any questions.  We are always happy to help and will respond asap!


  • Yellow Jackets YJUni Power Tube Adaptor With 1x EL84 Power Tube
  • 2 adapters, but only one tube (unfortunately, so price has been reduced)
  • Converts Univalve and BiValive-30 to EL84
  • 1x EL84 tube included
  • barely used!
  • Superficial scratches on adaptors


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