The perfect linestage can be imagined as simply a wire with gain. If you do not need gain a passive preamp will do. So, you ask what about matching impedances? Well a simple buffer can be used. Enter the First Watt B1, a passive volume control with buffer. The buffer makes the passive preamp more versatile because the impedance issue is handled by the buffer. Expensive? Not in the least and very good sounding. Here is Nelson Pass's thoughts:
http://www.firstwatt.com/pdf/art_b1_man.pdf
Getting back to the wire with gain. That will be the B3 and that will be coming soon. If you have a look at the pdf above, note how simplistic his designs are. Well designed and great sounding line stages do not have to be complex or cost a fortune.
I am not a dealer and have no affiliation with Pass Labs or Nelson Pass.
http://www.firstwatt.com/pdf/art_b1_man.pdf
Getting back to the wire with gain. That will be the B3 and that will be coming soon. If you have a look at the pdf above, note how simplistic his designs are. Well designed and great sounding line stages do not have to be complex or cost a fortune.
I am not a dealer and have no affiliation with Pass Labs or Nelson Pass.