From my experience, I would not say that the EX4420 was light in the bass but it sure did not have the bass drive that the Acurus A250 then A200 that I replaced it with.
As far as the B&K's you mentioned, the EX442 will be similar in performance to the EX4420 just in an older package. The others mentioned will not have the "high current" label with better bass drive but may be a bit on the "warmer" side.
Bill
As far as the B&K's you mentioned, the EX442 will be similar in performance to the EX4420 just in an older package. The others mentioned will not have the "high current" label with better bass drive but may be a bit on the "warmer" side.
Bill