I have newer, and older, from my '60s McIntosh tube amps and '60s (and some older) NOS tubes to much newer tube amps, in solid-state I have again from '60s McIntosh to very new. Power from 25wpc to hundreds/channel.
I feel that older gear, such as the old McIntosh gear does sound different, in most cases people will describe it as "warmer" where newer gear can sound "brighter", more "detailed", and other descriptions (but age alone does not mean it sounds one way or another).
Much has been written about these differences, and much is subjective, even more depends on your paired speakers, your music, your room, your ears. As nj said above believe everything that you hear from your speakers.
I don't know anything about your speakers, think you mentioned them above, but there certainly is some improvement to be had in power with newer McIntosh and if your speakers are very power hungry (the 2205 is no power slouch) then more power will help to improve dynamics (the softest to loudest) and other qualities.
However, if someone walked into my listening space and told me the same thing (presuming the word speed isn't a mis-translation into American English) I would probably laugh and realize that the person speaking hasn't a clue.
Others have brought up the need to restore an older piece like you have, even a couple of aging audio-coupling caps can reduce the SQ of a piece of gear significantly, and listen to the music, not the opinions of self-professed audio experts.
They probably have a heavy dose of "authority belief".
I feel that older gear, such as the old McIntosh gear does sound different, in most cases people will describe it as "warmer" where newer gear can sound "brighter", more "detailed", and other descriptions (but age alone does not mean it sounds one way or another).
Much has been written about these differences, and much is subjective, even more depends on your paired speakers, your music, your room, your ears. As nj said above believe everything that you hear from your speakers.
I don't know anything about your speakers, think you mentioned them above, but there certainly is some improvement to be had in power with newer McIntosh and if your speakers are very power hungry (the 2205 is no power slouch) then more power will help to improve dynamics (the softest to loudest) and other qualities.
However, if someone walked into my listening space and told me the same thing (presuming the word speed isn't a mis-translation into American English) I would probably laugh and realize that the person speaking hasn't a clue.
Others have brought up the need to restore an older piece like you have, even a couple of aging audio-coupling caps can reduce the SQ of a piece of gear significantly, and listen to the music, not the opinions of self-professed audio experts.
They probably have a heavy dose of "authority belief".

