Yeah I meant the 2A3. It should still have some tubey euphonics. The ZDSE is very tubey / distorted. I thought the ECBA was moving towards dry. The BA sounded pretty good but not as nice as the HPA-21. I was hoping for something great not pretty good.
Tubey: ZD > 2A3 > BA > 445 : dry ss sound
Where would the HPA-21 fit in the above in your opinion?