The level One upgrades by Part Connection typically included numerous upgrades to the internal parts but I can not be sure this was done. I do know that the unit sounds amazing. I will number all of the tubes to help you in proper installation of the tubes. The item "Jolida JD 202 Stereo Tube Integrated Amplifier with Parts Connection Upgrades" is in sale since Saturday, January 4, 2020.
This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps". The seller is "sbrunelle96r1" and is located in Princeton, Massachusetts. This item can be shipped to United States.