NAT

Magnetostat

Reference Absolute Zero Feedback Vacuum Tube Line Stage

Magnetostat is a new reference point line stage made by NAT standards – transformer coupled pure triode class A with absolute zero feedback circuit configuration. Military grade type 6S31B-R output tube is used – represent high technology in vacuum tube manufacturing.

Magnetic

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.

Symmetrical

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.