accuphase compare to mcintosh

Right. Great engineer will make an excellent sounding amp using off the shelf parts of reasonably good quality.
The same with speakers. How many times did you encounter expensive speakers that used "NASA grade" tweeters and woofers that just didn't sound right?
Skill first, parts second.

Audiofeil, I too am humbled by the level of experience demonstrated, and the perfection of the logic presented; it is not often that logic forming such a perfect circle is presented in such depth and with such vigor. I certainly have been schooled. I shall retreat to my corner and ponder my navel (which is surely not NASA grade - robust, circular, and enduring though it may be).

As to the OP's questions:
1) It depends on the integrateds. In general, I find Accuphase to have excellent bass, but to be a little rolled off in the treble. If I had to choose between top of the line Accuphase and TOTL McIntosh, I would choose TOTL Accuphase any day of the week.
2) I find Accuphase's 'house' sound signature to be quite detailed but slightly 'softened', and lacking in dynamics. I find McIntosh sound signature to be less detailed, and more 'round' - perhaps similar weaknesses but more pronounced.

Sounds like OP might have to actually listen to both to know which he would prefer, and that could be very dependent on the speaker and room used. Both are obvioulsy fine pieces of equipment.

wow! a lot of response for my simple question

Themis,
You got a NASA-grade response.