The GAT 2 seems to be an evolutionary product with the additional major benefit of NOS tubes as stock which would address a possible issue with current production tubes used in the GAT 1. Yes the PC88 operates on a higher heater voltage but this tube is not as sensitive to heater voltage as the 6922.....in the old days anything within 10% is not abnormal. Why they increased coupling capacitor total value is surprising though.
Anyone who has heard the difference between good NOS and EH knows what to expect as a minimum in the GAT2. The ET5 is nothing like a GAT inside , it would take more than a series revision for it to challenge the original GAT or ACT 2.2 for that matter.
Lets hope in the near futute the price of GAT 1's come down so mere mortals can look to acquire them
