I continue to use and to enjoy my TP 2.0nB preamplifier. No trouble with the preamp at all. I think it is a great value.
Perhaps you will enjoy the process of upgrading the preamplifier. I went for the fully upgraded version at the start, including the upgraded tubes, and have not regretted it.
As I understand it, Joseph offers the tubes as a not-for-profit service to his customers in order to better demonstrate the capabilities of the preamp. I listened to the stock EH tubes and to Siemens tubes. The benefit of the Siemens was clear to my ears. However, there may be other excellent tubes that you would prefer.
Perhaps you will enjoy the process of upgrading the preamplifier. I went for the fully upgraded version at the start, including the upgraded tubes, and have not regretted it.
As I understand it, Joseph offers the tubes as a not-for-profit service to his customers in order to better demonstrate the capabilities of the preamp. I listened to the stock EH tubes and to Siemens tubes. The benefit of the Siemens was clear to my ears. However, there may be other excellent tubes that you would prefer.