I let the unit warm-up to room temperature and cleaned off a bit of dust, also used a CD lens cleaner disc. I plugged in the power cord and the unit powered on with no problem. Popped in a CD and it read all the tracks correctly. The sound out of the headphone jack is pretty powerful. The quality of the sound is great, much as others have described it. The mids/vocals have a lush, laid-back and somewhat buttery quality that reminds me of the Sennheiser HD600/650s, without being less pronounced than the bass or treble. It's really a terrific sound. Strangely enough, the unit plays cds that I burned on my computer, but does not play several commercial discs that I have tried. Wondering if maybe there is a maximum number of tracks it can handle? I have a Sinatra CD with 20 tracks and the D35 couldn't handle that.
Compared to an old home Sony CD player I have (the CDP-190), the D35 has less sound-stage or spaciousness, but overall higher resolution and detail and a more balanced sound from low to high. One curious note: the Mega-bass feature doesn't sound too awful set at the mid-position and I find that with it on the whole sound-range appears to be fuller, almost as if the sound is running through a filter with the Mega-Bass off. Overall, it's a very fun new toy - and can't beat the price ($10)! Oh, and that unused Sony battery from 1991 charged up and holds a 3 hour charge. That's quality.