- single-ended type - integrated amplifier
- zero global feedback design
- triode direct-heated (D.H.T.) output type
- short signal path
- full dual mono construction
- 50W of pure class A
- output section - GM70 tube by military grade and N.O.S.
- driver section - 6N23P (E88CC) tubes by military grade and N.O.S.
- hand coiled balanced output transformer (custom designed for NAT)
- separate transformer-conditioner power supply unit
- regulated power supply for all stages (including the output)
- universal (12 leds) display
- filament soft start operate to improve entire reliability
- remote control made from solid block of aluminum
- automatic bias current control with long term stability
- standby function
- relay (silent type) attenuation network
- hand assembled all modulated chassis
- high mass Schutzinger laboratory grade output connectors
- gold plated PTFE insulated RCA input connector custom ordered from NAT
- extensively used computer numeric control machines (CNC)
- 5/8" (15mm) thick aluminium front panel
- cover cage (optional)
Specifications are subject of change without notice
Technical Specification | |
Name | Value |
Type | Single Ended Tube Base Zero Global Feedback |
Power | Up to 52 W @ 4 or 8 ohms |
Frequency Response | 10 to 110 kHz, -3 dB; 20 Hz to 20 kHz, +/-0,5 dB |
Noise | <100 dB IHF reference to 1 W |
Sensitivity & Gain | 0.4V for full power, 34 dB (X 50) |
THD & N | < 0.15 % |
Input Impedance | >15 kohms |
Output Impedance | <0.8 ohms (damping factor >10 reference to 8ohms load @ zero global feedback) |
Stereo Separation | >95 dB |
Tube Complement | 2 x 6N23P (E88CC) & 2 x GM70 per unit |
Power Requirements | 100VAC to 240VAC (50 to 60 Hz), max. 390 VA |
Dimensions |
19" (483 mm) wide ´ 15.7" (400 mm) deep ´ 10.2" (260 mm) high /unit + 7.5" (190 mm) wide 11.8" (300 mm) deep ´ 7.5" (190 mm) high /power supply |
NET Weight | approx. 74 lb. (33.5 kg)/unit + 16.5 lb. (7.5 kg)/power supply |
TOTAL Weight | approx. 114.6 lb. ( 52kg) packed in polypropylene crate |