NAT AUDIOMAGMA NEWNAT AUDIO MAGMA NEW SINGLE ENDED AMPLIFIERI do have Demo units in stock as very special price. Call me for additional information.Tom Single Ended Mono Block Power AmplifierNAT produced the most powerfu...65000.00


no longer for sale

I do have Demo units in stock as very special price. Call me for additional information.

Tom Vu


Single Ended Mono Block Power Amplifier

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

Design Features

- Single Ended pure class A mono block power amplifier
- only one voltage gain stage
- power military grade type direct heated triode-GM100 (N.O.S.) - most powerfull triode globally ever produced for audio
- DC coupled circuit (only output transformer on signal path)
- CE comfortable regarding maximum DC operating voltage 
- 170 W of pure class A @4ohms or @8ohms
- zero global feedback configuration
- high capacitance in power supply resulting to over 500joules of  energy storage
- custom designed silent power transformer of 2000W encapsulated-low density
- custom designed output transformer of 1000W encapsulated- last generation
- full double zero feedback stabilisation of high voltage for driver tubes
- 6N1P-EV military grade long life tube for driver purposes (N.O.S.)
- bias with fully automatic-adjust (no any adjustment)
- variable bias (two mode with 60W & 170W of output power-switch on front panel)
- fully stabilised DC power to supply filament of output tube
- balanced regulated DC power to supply filament for driver tubes
- soft start to increase reliability and to prolong life
- output  premium NEXTEGEN-WBT connectors
- all modulated chassis with laminate 20mm thick front panel

Technical SpecificationNameValueTypeSingle Ended Class "A"Power Output170 Watts @ 4 & 8 ohms; 1 kHzFrequency Response6 Hz to 80 kHz;Input impedance100 kohmsInput Sensitivity2.45 V RMS for full power outputGain27.50 dBRise Time5 microsecondsNoise105 dB below rated output "A" weightedPhase statusRegular ( 0 )Tube Complement1x 6N1P-EV, 1 x GM100 (all by military standard and N.O.S.)Power Requirement110 VAC or 220 VAC @ 50 to 60 Hz, max. 750 VADimensions11.8" (300 mm) wide ´ 30.3" (770 mm) deep ´ 14.2" (360 mm) highNET Weightapprox. 133 lbs (60 kg) unpacked / per pieceTOTAL Weightapprox. 332 lbs ( 150 kg) packed / total

Seller Information

Kt Audio Imports  Verified Dealer

Last 12 months

Member since September 2013