I had the predecessor NAD C370 integrated amp in an old “B” system with its attached hardwired uber-cheap power cord.
i has it professionally modded with dremmelling out the back plate to accommodate a female IEC and now with a new external power cord.
MY TAKE
There was a debatable small audio improvement with the mod ....but .....IMO it’s not worth the expense or hassle to do it with only a debatable small audio performance step-up. I would not do it again.
The amp itself does its yeoman duty built as a mid-fi build component but it won’t deliver any “a-ha” moment with mods or tweaks.
The litmus test that its internal mid-fi build and resulting audio performance was impervious to mods arose in that after the mod was done, I swapped in different external power cords ranging from $50 DIY cable up to a $$700 top-brand cable borrowed from my “A” system ...... with no difference in audio performance between the various cables like I saw in my “A” system.
The insertion of a dedicated AC power line from the breaker panel to the wall socket I have found to be a much better first step upgrade option. If you don’t have that to start with, then all the tweaks independently is a liklely disappointing waste of money.
i has it professionally modded with dremmelling out the back plate to accommodate a female IEC and now with a new external power cord.
MY TAKE
There was a debatable small audio improvement with the mod ....but .....IMO it’s not worth the expense or hassle to do it with only a debatable small audio performance step-up. I would not do it again.
The amp itself does its yeoman duty built as a mid-fi build component but it won’t deliver any “a-ha” moment with mods or tweaks.
The litmus test that its internal mid-fi build and resulting audio performance was impervious to mods arose in that after the mod was done, I swapped in different external power cords ranging from $50 DIY cable up to a $$700 top-brand cable borrowed from my “A” system ...... with no difference in audio performance between the various cables like I saw in my “A” system.
The insertion of a dedicated AC power line from the breaker panel to the wall socket I have found to be a much better first step upgrade option. If you don’t have that to start with, then all the tweaks independently is a liklely disappointing waste of money.