In part because the construction does not match the quality of its peers in its price class. Look at the cutaway drawing for the M1000 at monstercable.com and then look at the cutaway of the Audioquest King cobra at audioquest.com. Remember that the King Cobra is a $175.00 cable vs. $200 for the M1000. The King Cobra has 4 condutors that are solid core so no inductance problems between strands in the same wire package. The M1000 is stranded. No one uses 100% pure copper because it is too soft to extrude into wire. Ususally zinc or nickel is used to alloy the copper and make it stronger. I am not able to find out for sure but I suspect that the copper purity is higher for Audioquest and an number of other manufacturers or it may be the difference between nickel and zinc as an alloy.
I was certified by IEEE as a specialist in Power Generation and Trzansmission systems in 1975. Based on my experience, the stranded condutor is not conducive to clean signal. Both cables use PE as an insulator but the King Cobra uses hollow tubes so the effect of the dielectric effect on on the cable and signal is less. The shielding in my opinion is better on the King Cobra. It also has a drain wire which the M1000 does not. Now do these differences make any significant difference. In my opinion Yes and No. I have just switched from solid state integrated Yamaha CA-1010 amp to a custom built tube phono preamp(6months ago) , line preamp and tube amp. For tubed equipment the difference is significant. I have for many years and continue to use a M1000 between my Pioneer Elite CLD-95 laser disc player and a Denon 1602 A/V Home Theater and cannot tell the difference between the two. But the difference between my phono preamp and line preamp is painfully obvious. The M1000 sounds dull. I have one King Cobra which I use between my line preamp and aSony TCW7ESA tape deck. My mai cables are now emerals($80 new) and 2m Pythons ($300) new) both are discontinues models with the pythons discontinued since the first of the year. My conclusion is that the M1000 is just fine withsolid state equipment but under performs on tube equipment. The M1000 also seems to have a greater problem with ground loop interference in my recent experience with tubed equipment. I have a bunch of Monster M400 and 250 cables that I now longer need. Any one interested.
I was certified by IEEE as a specialist in Power Generation and Trzansmission systems in 1975. Based on my experience, the stranded condutor is not conducive to clean signal. Both cables use PE as an insulator but the King Cobra uses hollow tubes so the effect of the dielectric effect on on the cable and signal is less. The shielding in my opinion is better on the King Cobra. It also has a drain wire which the M1000 does not. Now do these differences make any significant difference. In my opinion Yes and No. I have just switched from solid state integrated Yamaha CA-1010 amp to a custom built tube phono preamp(6months ago) , line preamp and tube amp. For tubed equipment the difference is significant. I have for many years and continue to use a M1000 between my Pioneer Elite CLD-95 laser disc player and a Denon 1602 A/V Home Theater and cannot tell the difference between the two. But the difference between my phono preamp and line preamp is painfully obvious. The M1000 sounds dull. I have one King Cobra which I use between my line preamp and aSony TCW7ESA tape deck. My mai cables are now emerals($80 new) and 2m Pythons ($300) new) both are discontinues models with the pythons discontinued since the first of the year. My conclusion is that the M1000 is just fine withsolid state equipment but under performs on tube equipment. The M1000 also seems to have a greater problem with ground loop interference in my recent experience with tubed equipment. I have a bunch of Monster M400 and 250 cables that I now longer need. Any one interested.