Thanks for your very informative posts, Kosst. I’ve learned some things from them about my own XA25 that I didn’t know previously.
Regarding the references in one of your posts to "average volume," others should keep in mind that what matters with respect to an amp’s maximum power capability is of course the maximum volume levels that are reached on the recordings that are listened to, not the average level. And the relation between the maximum and average volume levels will vary dramatically among different recordings, depending on both the music and on how much dynamic compression has been applied in their engineering.
For example, some classical orchestral recordings that have been engineered with minimal or no dynamic compression may reach brief dynamic peaks that are 30 db or more greater than the average level of the recording. Which in turn means that around 1,000 times as much power will be required to reproduce those brief peaks compared with the amount of power required to reproduce the average level of the recording. While many and perhaps the majority of pop and rock recordings are compressed to a dynamic range of less than 10 db, which will require less than 10 times as much power for peaks than for the average level.
Thanks again. Best regards,
-- Al