angusluk 發表於 2012-1-28 19:10
問定先,諗住部膽機break in 後就換膽
Why wait for the amp to break in first?
For me, I changed the original tubes in the amp on day one so that the amp and the new replaced tubes can break in together (to save valuable time).
IMHO, original tubes are usually not too good because of the manufacturers' cost consideration.