I thought I’d share a short update of my findings with the in wall mains cables I installed.
Firstly, thank you to who kindly gave their words to date on this thread.
Do I think that a dedicated mains line is worth while, an unequivocally YES.
The effect of these 6mm dedicated in wall cables is not a subtle effect. I would say regardless of the usual disclaimers the effect would be noticeable.
The sound has impact, authority, muscle and power to the overall scale, even from the onset.
At the mains switchboard, each cable is connected to an individual 20 amp circuit breaker, that are connected to an RCD (Residual Current Device).
The cables are terminated individually at the wall via 2 x 2 auto (i.e. no on\off switches) double wall socket points.
There were other methods and materials suggested that could also of enhance the sound, but I choose to conform to within the NZ Electrical Standards.
The initial results below, are reference to the Amp and DAC after approx. 80 hours. The other components not as yet.
Nothing scientifically tested, only swapping different power cords combinations between the different wall sockets and listening.
Installing four different 6mm (9 AWG) circular TPS (Thermo-Plastic Sheathed) cables with each cable measuring 8.0m (approx. 26’) in length.
A-
https://www.firstflex.co.nz/wp-content/uploads/2022/08/HDT.pdf
This 190 stranded cable has very good clarity in the mid to high range, modestly better than cables B & D, not harsh or bright, but at the expense of the lower end.
The sound was better with the DAC connected rather than the Amp.
B-
https://www.tycab.co.nz/wp-content/uploads/2019/09/BMM37104.pdf
This 7 stranded cable (Model #37104) and cable D are very close to each other.
These cables faired a lot better in overall sound than cable A from low to high.
Both of these two cables worked as equally well on both the Amp and DAC.
C-
https://express.ecsnz.com/downloads/LAPP/CAT2018_2019/LAPP-Main-Catalogue-2018-19 _ 41.pdf
This multi stranded screened 4 core cable (model #1135604) is the pick of the four cables, noticeable. It is equal in the low and high end (possibly slightly better?) of Cable B & D but the mid range has so much more.
The mid range had more presence, weight and clarity. This cable worked equally as good on both the Amp and DAC.
With only one of the two components being able to be plugged into this, the combination of the DAC connected to this cable and the AMP plugged into Cable D worked better overall than visa versa.
D-
https://express.ecsnz.com/downloads/lapp/ECS Product Selection Guide 2022-Q4 24.pdf
Model #3803843. As for Cable B
Components connected to date;
Cable A- Antipodes S60
Cable B- Antipodes K30
Cable C- Denafrips Terminator II DAC
Cable D- Kinki Studios Amp