To any of you who claim that adding a dac to the Planet 2000 will not offer improvements, I'm really not sure how you can say this. I have just recently auditioned the Planet 2000 stand-alone vs. a very inexpensive universal disc player (i mean all out cheap player) along with an MSB link DAC III with Nelson upgrade, upsampling and power base...and let me tell you, the difference was night and day. The MSB setup was FAAAARRR superior.
I'm not saying that the MSB link dac is the best there is, but certainly a modest cd player can be improved upon significantly with the addition of an external DAC, moreso than buying a new all in one unit at double the cost of the dac.