Купил 5881/6l6WGC две штуки.
Решил пока взять эти, т.к. по описаниям имеют больший запас прочности...
т.е. должны выдержать мои эксперименты с подбором bias и т.п.
Вообще, многие рекомендуют брать "matched pair", хотя вот:
The Matched Tube Set… In the Real World… I want you to understand that tubes change characteristics and weaken with use. The wonderful matched set that you paid good money to have matched, after one week of usage, may be as much as 30% out-of-match with each other. This could be even farther out than if you bought them unmatched. That is the reality of the Real World.
I want also to ask you this question. “If it is so very important to buy matched output tubes, then why is it not even more important to have the two separate internal tubes that are inside the Phase-inverter Driver (12AT7) that drive the power tubes exactly matched?” The answer is simple. Yes, it is very very important to have these two internal tubes perfectly matched. If they are not equal, it won’t matter how matched your power tubes are. If that is the case then, why can’t you buy that tube with matched halves? Welcome to the real world.
