If I can speaker to some issues not previously addressed:
There are four functions a line stage has. They are:
1) supply any missing gain
2) provide volume control and input selection
3) provide buffering of the volume control from external impedances
4) (and least understood) control the interconnect cable.
Passive systems provide only #2. Most line stages provide 1-3. If that is all they can do, it will be likely that there will be tradeoffs with a passive, perhaps in the passive's favor. If, OTOH, the preamp is capable of all four functions, then it is likely that the active linestage will be superior.
This is because the interconnect cable plays a serious role in the system. As any passive owner can tell you, the passive sounds better turned up rather than turned down. This is because the passive cannot control the interconnect. At the extreme opposite, a preamp that *does* control the interconnect will be found to be immune to the type of cable and its length.
The unfortunate thing is that you can count the number of such preamps in the high end audio community on your hands with fingers left over, because most preamp designers do not acknowledge the 4th function.
Of course, different line stages exhibit different levels of competence. This definitely muddies the waters somewhat!
This is a good part of why there is a divergence of opinion. There would be none if everyone could hear a competent linestage that can control the interconnect cable, but even that is not likely so this debate will continue.
There are four functions a line stage has. They are:
1) supply any missing gain
2) provide volume control and input selection
3) provide buffering of the volume control from external impedances
4) (and least understood) control the interconnect cable.
Passive systems provide only #2. Most line stages provide 1-3. If that is all they can do, it will be likely that there will be tradeoffs with a passive, perhaps in the passive's favor. If, OTOH, the preamp is capable of all four functions, then it is likely that the active linestage will be superior.
This is because the interconnect cable plays a serious role in the system. As any passive owner can tell you, the passive sounds better turned up rather than turned down. This is because the passive cannot control the interconnect. At the extreme opposite, a preamp that *does* control the interconnect will be found to be immune to the type of cable and its length.
The unfortunate thing is that you can count the number of such preamps in the high end audio community on your hands with fingers left over, because most preamp designers do not acknowledge the 4th function.
Of course, different line stages exhibit different levels of competence. This definitely muddies the waters somewhat!
This is a good part of why there is a divergence of opinion. There would be none if everyone could hear a competent linestage that can control the interconnect cable, but even that is not likely so this debate will continue.