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Wednesday, 04 April 2012 18:56


Reference Absolute Zero Feedback Vacuum Tube Line Stage

Magnetostat set reference point for line stage made by NAT as transformer coupled pure triode class A with absolute zero feedback circuit device. Special military grade type 6S31B-R (tiny super tube) output tubes are used.

Wednesday, 04 April 2012 18:55


Reference Zero Feedback Balanced Line Stage

Magnetic is a newest reference point line stage made by NAT standards – transformer coupled, class A with zero feedback circuit configuration. Special selected vacuum tube is used - represent high technology in industrial tube manufacturing.


Wednesday, 04 April 2012 18:43


Balanced Dual Mono Zero Feedback Vacuum Tube Line Stage

NAT Audio introduced last version of tube balanced preamplifier as Symmetrical Vacuum model. New line stage is completely in dual mono configuration with zero feedback all triode vacuum tube design.