Don’t know about night and day difference but I’ve replaced some Morrow MA4s pre 2018 design (with KLE Pure Harmony RCA plugs) with, firstly, Atlas Equator OCC Integras and, more recently, Mark Grant Cables HDX1.
The Atlas pair were less than half the price of the MA4s. The HDX1s were less than a fifth of the price of the MA4s. As I posted elsewhere on the web, I found the MA4s had a tendency to sound bright and, with some recordings, brittle. With both the Equators and the HDX1s, music sounded smoother at higher frequencies and, to me, had the edge over the MA4s on sound stage width. I preferred the HDX1s because the bottom end was slightly firmer than the Atlas but, for me, both comfortably displaced the MA4s.
On these very forums, Black Cat Coppertone interconnects have been discussed, mainly positively. However, I don’t have personal experience.
I also tried Mogamis (2497 cable) but, unlike many many other posters on these (and other) forums, I was truly underwhelmed. YMMV :) .
Happy hunting...
The Atlas pair were less than half the price of the MA4s. The HDX1s were less than a fifth of the price of the MA4s. As I posted elsewhere on the web, I found the MA4s had a tendency to sound bright and, with some recordings, brittle. With both the Equators and the HDX1s, music sounded smoother at higher frequencies and, to me, had the edge over the MA4s on sound stage width. I preferred the HDX1s because the bottom end was slightly firmer than the Atlas but, for me, both comfortably displaced the MA4s.
On these very forums, Black Cat Coppertone interconnects have been discussed, mainly positively. However, I don’t have personal experience.
I also tried Mogamis (2497 cable) but, unlike many many other posters on these (and other) forums, I was truly underwhelmed. YMMV :) .
Happy hunting...