Adding to my recent Soulution 331 integrated amplifier observations above, yes, I agree with Miles on the break in period of a new unit - at least a few hundred hours or more in my experience.. Also, the 331 needs, from start of full power-up mode, about one hour to start sounding its best. Just plan ahead in your listening sessions and the total immersion, liquid flow and jump-factor of the 331 will take you away...
I reckon it takes fully broken-in 312 a minimum of 24 hrs after turn on to begin settling in. And at least three days after turn on to sound optimal. Then again I find that true of most solid-state electronics I’ve had here. So they just are left on and no planning needed.
