I owned the Morrow M1 cable and it was so good I upgrade to the M3 interconnect...
But I want to say that upgrading an audio system with a change of cables is in my mind the last upgrade to consider, way after the implementation of the audio system in controlled mechanical environment(vibrations-resonance), in an acoustically treated room, and in a cleaned electrical house grid...After that the changes of cable will have meaning and audible effects...Without these tweaking of these 3 embeddings, you will be with the cohort of deaf people, or with those people with a dead audio ( a non-treated one), that does not hears any differences between cables...Easy to understand why... :)
But I want to say that upgrading an audio system with a change of cables is in my mind the last upgrade to consider, way after the implementation of the audio system in controlled mechanical environment(vibrations-resonance), in an acoustically treated room, and in a cleaned electrical house grid...After that the changes of cable will have meaning and audible effects...Without these tweaking of these 3 embeddings, you will be with the cohort of deaf people, or with those people with a dead audio ( a non-treated one), that does not hears any differences between cables...Easy to understand why... :)