A couple of thoughts. One is that Redbook DAC volatility has subsided considerably from the hectic rate of change of the nineties. The area where digital is likely to undergo the most turmoil in the next few years is high rez. And for high rez, the transport will be involved as well as the DAC.
Transports and Technology
I assume that transports are a less volatile component than DACs. If I invest in a combo instead of CDP to allow for DAC upgrades, what kind of things should I be aware of in terms of transport technolgy? How does an old TEAC, Cal Tech, or Meridian stand up to the latest greatest? What are the milestones in the evolution of transports?