Okay, I'm about 25 hours into the break in. After about 6 hours, things started going south on the sonics. A further 10 hours or so and it stared coming back. This is leaving the unit running for a max of 4 hours at a time, and then shutting off for an hour or more, to run again the next evening, or longer on the weekend. I didn't want to leave it on 24/7.
The other thing is that I'm breaking in the PS Audio AC5 power cable at the same time, so I'm not sure what exactly may be causing the changes in sound. But at 25 hours it's getting pretty nice. I read where another 375 owner was told by Nad dealer that he should break it in 100 hours, but we'll see what it's like at 50.
The other thing is that I'm breaking in the PS Audio AC5 power cable at the same time, so I'm not sure what exactly may be causing the changes in sound. But at 25 hours it's getting pretty nice. I read where another 375 owner was told by Nad dealer that he should break it in 100 hours, but we'll see what it's like at 50.