I just got my LD I+ yesterday and boy is it awesome! I love this thing. Even with the stock tubes and no mods done it sounds great. It really brings a warmth and feel to the cold digital FLAC files that i was looking for. I notice that even running with the onboard DAC out of the MacBook Pro instead of my Syba Usb DAC, it sounds equally as good. I guess that answers the question of which is more important - DAC or AMP. One thing, I am noticing a significant buzz. Especially in the noise floor. When there is nothing playing it is pretty loud and then the sound covers it up. This sound is present even when there is no input plugged into the amp. When I crank it to about 70 the buzz goes away a little and then comes back when turned up all the way. Is this a function of the poor quality stock tubes, or do I have a bigger problem. I hate to even make a thing out of it because i love the way this things performs so well, and it may be that a little buzz is part of the package. Overall this thing is a monster with my Grados 60i's
Good for you man! Glad to hear you dig it. The hum could be one of several things: 1. Stock tubes 2. Improper grounding 3. Power supply.
Have any other tubes to try?