Mcintosh mx136 vs Mcintosh Mx150

Is what i belive but i need more toughs from other people too before to get a Mx150.

I am not a 100% sure, but I believe the MX136 was that last Pre-pro to have a true analog in analog out circuit path. My understanding is the MX150 runs everything thru the digital processing to the outputs. I guess the thought is to have all signals available to process for room correction. You might give McIntosh or the guys at Audio Classics a call to confirm.
i had owned a number of Pre-pros from C39 thru MX135, then changed over to a D2v Anthem Statement. I miss the analog pass thru for the 6 Channel. 
As far as making comparisons, I have heard and watched both 136 & 150 but not in a manner to make comparisons. One thing to be concerned with as the MX136 is pretty old in "digital years" so the HDMI , MAY NOT have what you need if intermixing today's video products, but I don't know on that.

Thank you. From i know the true analog sound lot better compare with digital sound, to my opinion.

No argument here. But it seems the gap is narrowing.

I've found that my MX 136 has an excellent phono section which produces a deep and wide sound stage. Low level detail ( room ambience) is clearly reproduced and the soundstage is both wide and deep. I do use the pure stereo mode and find that this preamp is sonically very neutral and very quiet. I do not route video through my MX 136 as the HDMI circuits are Version1 and do not handle audio.