hi benpup -
from my experience with brand new TA ref ICs and SC with the mm2 tech, it takes a full 200 hours for the cables to run in. less hours, they do sound lean and at times thin, as can many components during the first few hundred hours. i doubt i have a full 400 hours on them now. when i auditioned the ref orig tech vs ref+mm2, i initially found that in large orchestral works, the orig tech had a quality of "fullness" vs a leaner presentation with the new mm2, but i am now convinced that the "fullness" of the orig mm tech is in part the aural experience that includes a good deal of sonic "debris", such as subtle transient smearing, etc. i felt more sound "mass" with the mm1 at the same volume level on the preamp compared to the mm2 tech when listening to the same music. meatloaf vs steak. meatloaf is richer but...
however, now that i have lived with the mm2 another 150+ hours, my ears dont hear a lack of richness, but rather greater nuance and micro changes. the sound may be slightly leaner [i dont have the mm1 on hand to do another a/b), but it has much greater character and presence. i never found indiv voices lost in a smooth presentation with the mm2, as you did. staging increased in depth;in my system placement of indiv voices became more easily located.
re: weight in presentation: if the mm2 you auditioned were fully run in, and you find the mm2 to be an advantage in all areas except weight/fullness, firstly determine if indeed the presentation you are now fully used to hearing from your system is actually a realistic fullness. get thee to some live choral concerts in a few different halls. may on audiogon have far more knowledge of audio reproduction than i, but i think any number of aspects of your system can be changed to add wt.fullness -- if the mm2 cables are right for you in every other aspect. i have been seeking to add top end weight in my system without the significant cost of moving to an x01-d2 cdp this year since i am keeping my wilson w/p 8s. changing the stock tubes in my vtl preamp to amperex bugleboys made a significant difference , mostly in the mid range and somewhat at the top end. this week i just placed a PAD 20th anniv contego PC on my cdp. it is just about run in. wow, a significant improvement overall including increased wt at the upper mid and top end without any loss of speed. i have auditioned several PCs for the cdp. the change in presentation varied greatly between many well known brands such as TA, nordost, shunyata, PAD. i think no single component (cables are components) can bring everything to the table when it is inserted into a unique system.
did you audition the ref+mm2 SC bi-wired? i am under the impression that B&W nautilus series run best bi-wired.
re: vtl 7.5 mk 2 preamp . i do not know what changes it would bring to your system vs the pass P you have, but the 7.5 mk2 is an exceptional preamp, few would disagree. it has tubes, so there is some added flexibility to overall presentation. something to consider, or the 6.5 single box version.
i would firstly determine if the wt/fullness you have enjoyed with the mm1 cables is more lifelike overall than the presentation with the mm2 ... what gets you closer to the musical experience you desire?
from my experience with brand new TA ref ICs and SC with the mm2 tech, it takes a full 200 hours for the cables to run in. less hours, they do sound lean and at times thin, as can many components during the first few hundred hours. i doubt i have a full 400 hours on them now. when i auditioned the ref orig tech vs ref+mm2, i initially found that in large orchestral works, the orig tech had a quality of "fullness" vs a leaner presentation with the new mm2, but i am now convinced that the "fullness" of the orig mm tech is in part the aural experience that includes a good deal of sonic "debris", such as subtle transient smearing, etc. i felt more sound "mass" with the mm1 at the same volume level on the preamp compared to the mm2 tech when listening to the same music. meatloaf vs steak. meatloaf is richer but...
however, now that i have lived with the mm2 another 150+ hours, my ears dont hear a lack of richness, but rather greater nuance and micro changes. the sound may be slightly leaner [i dont have the mm1 on hand to do another a/b), but it has much greater character and presence. i never found indiv voices lost in a smooth presentation with the mm2, as you did. staging increased in depth;in my system placement of indiv voices became more easily located.
re: weight in presentation: if the mm2 you auditioned were fully run in, and you find the mm2 to be an advantage in all areas except weight/fullness, firstly determine if indeed the presentation you are now fully used to hearing from your system is actually a realistic fullness. get thee to some live choral concerts in a few different halls. may on audiogon have far more knowledge of audio reproduction than i, but i think any number of aspects of your system can be changed to add wt.fullness -- if the mm2 cables are right for you in every other aspect. i have been seeking to add top end weight in my system without the significant cost of moving to an x01-d2 cdp this year since i am keeping my wilson w/p 8s. changing the stock tubes in my vtl preamp to amperex bugleboys made a significant difference , mostly in the mid range and somewhat at the top end. this week i just placed a PAD 20th anniv contego PC on my cdp. it is just about run in. wow, a significant improvement overall including increased wt at the upper mid and top end without any loss of speed. i have auditioned several PCs for the cdp. the change in presentation varied greatly between many well known brands such as TA, nordost, shunyata, PAD. i think no single component (cables are components) can bring everything to the table when it is inserted into a unique system.
did you audition the ref+mm2 SC bi-wired? i am under the impression that B&W nautilus series run best bi-wired.
re: vtl 7.5 mk 2 preamp . i do not know what changes it would bring to your system vs the pass P you have, but the 7.5 mk2 is an exceptional preamp, few would disagree. it has tubes, so there is some added flexibility to overall presentation. something to consider, or the 6.5 single box version.
i would firstly determine if the wt/fullness you have enjoyed with the mm1 cables is more lifelike overall than the presentation with the mm2 ... what gets you closer to the musical experience you desire?

