Battery Powered Vacuum Tube Phono Stage
NAT set a new standard in Phono state-of-the art product by new approach-vacuum based inverse RIAA network in model Signature Phono Vacuum RIAA. Standard inverse RIAA network based on resistor or even better inductor as main part in the signal path, but NAT put Vacuum field medium instead. Phono stage contains 10 vacuum tubes in full zero feedback configuration.
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.
Single Ended Mono Block Power Amplifier
New version already improve quality of previous model by set power to 20W with special single gain topology. Single Ended Mono Block Power Amplifier Se1-GMI 83V has very short signal path without passive components. It means that this circuit contains no coupling capacitors & no inter-stage transformers.