Single Ended Mono Block Power Amplifier

 


Click here to to see Magma Single Ended Power Amplifier Mono Block photo gallery.

NAT produced the most powerfull single ended in the world called Magma. It is called Magma, because the color of anode so real to vulkan's magma. Read soon much more about this unigue project.

Magma was decided like the best amplifier on Moscow High End Show by the side of independent jury.

Click here to see photo.

 

NAT Audio has review for Magma Mono Block Power Amplifier in "Gramophone" dec. 2008. edition.

Click here to download original review (Russian) (395 kB)

Click here to download part of review (English) (245 kB)

 
Technical Specification

Type

Single Ended Class "A"

Power Output

160 Watts @ 4 & 8 ohms; 1 kHz

Frequency Response

10 Hz to 100 kHz; -3dB

Input impedance

100 kohms

Input Sensitivity

1.5 V RMS for full power output

Gain

27.50 dB

Rise Time

5 microseconds

Noise

105 dB below rated output 
Phase status Non inverting ( 0o )
Tube Complement 1x 6N1P-EV, 1 x 6N30P-DR , 1 x 450 TH
Power Requirement 110 VAC or 220 VAC @ 50 to 60 Hz, 450 VA
Dimensions 11.8" (300 mm) wide ´ 25.2" (640 mm) deep ´ 14.2" (360 mm) high
NET Weight approx. 88 lbs (40 kg) unpacked / per piece
TOTAL Weight approx. 110 lbs (50 kg) packed / per piece

Design Features

- Single Ended pure class A mono block power amplifier
- Eimac power industrial type direct heated triode - 450TH (N.O.S.)
- DC coupled all tube circuit (only output transformer without capacitors)
- CE comfortable
- 160 W of pure class A @4ohms or @8ohms
- zero feedback or low global feedback configuration with damping factor of 20
- high capacitance in power supply resulting to over 500joules of  energy storage
- custom designed power transformer of 1000W encapsulated-low density
- custom designed output transformer of 1000W encapsulated- last generation
- double stabilisation of high voltage for driver tubes

- 6N1P-EV & 6N30P-DR long life military grade tubes for driver purposes

- full automatic bias with automatic-adjust (no any adjustment).

- variable bias (two mode with 40W or 160W of output power)

- balanced DC power to supply filament of output tube
- balanced regulated DC power to supply filament for driver tubes

- WBT output connectors

- input  wired  with pure 6N silver (99,9999% of silver purity)

- all aluminum modulated chassis with double 25mm thick front panel


*Specifications are subject of change without notice