OK - you’ve got the most powerful synths ever, and you’ve got the most powerful computer gear ever, and you’ve got the most powerful kick ass tracks ever - what are you going to play them on?
The NAT Audio Magma, of course - designed to be the most powerful tube amplifier ever built.
With 160 watts of power, the Magma is surely in contention for that title. The NAT Audio Magma is capable of blasting its raw power at 4 or 8 ohms with a frequency response of 10-10,000 Hz. To produce this power the Magma relies on three different tubes: the 6N1P-EV, the 6N30P-DR, and the Eimac 450TH.
In order to handle this power, the Magma utilizes an unusual direct-heated NOS amp design that runs into a DC-coupled all-tube circuit, which allows the amp to achieve a damping factor of 20. In addition, the power and output transformers are rated for 1000 watts, and the power supply capacitance is over 500 joules. The Magma weighs in at 88 lbs. and will set you back $55,000 for a pair of the monoblock amplifiers.
Specifications:
- 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: 2.7 V RMS for full power output
- Gain: 22.50 dB at 8 ohm
- Rise Time: 5 microseconds
- Noise: 105 dB below rated output
- Phase Status: Non inverting (0 degrees)
- 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″ wide x 25.2″ deep x 14.2″ high
- NET Weight: approx. 88 lbs per piece
- Price: $55,000 per pair
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
- Low global feedback configuration with damping factor of 20
- High capacity 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 encapsulatedlast generation
- Full double stabilization 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 & 160W of output power)
- Balanced DC power to supply filament of output tube
- Balanced regulated DC power to supply filament for driver tubes
- Both input and output WBT connectors
- Input wired with pure 6N silver (99,9999% of silver purity)
- All aluminum modulated chassis with double 25mm thick front panel
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6 Responses to “The Most Powerful Tube Amplifier Ever Built”
Please Wait
most powerful? As if. please, this is a poser amp and not even worth discussing.
I have seen a Diagram for a 500 watt push pull output (Philips) with the HT at 3KV, response was something like 50Hz to 6Hz and this was more than 20 years ago. Personally I hate valves, they a crap in producing HiFi. If you been brainwashed into thinking valves are the best then you must have more dollars than cents (sense). They sound great in guitar amps and old style radio.. Distortion is what these babies make! You must be crazy to spend 55.000 dollars this old technology. Damping Factor of 20 lol
Now you all know what I mean when I talk about paper powered amplifiers. Any pure class A amplifier is running a half power in total quiescence (dead quiet). This is a pretty web page, also a technical selling ploy that I hope has become antique. The chinese are trying to dump oddball tubes on our market, and I say that that is what you are viewing here with this ad. Just search eBay.com and you’ll see them with free shipping and russian tubes. Push pull, - will burn up as soon as you turn them on without the exact right load on the speaker outputs. Now I’m laughing too hard to keep typing…
There are many tube amplifiers making lots more power than this. Production ones include the Altec 260,1570B, and others, the McIntosh MI200 and MC3500, and….about two dozen others.
A little place in North Hollywood made a nice Class-A tube amp back in in the 1970’s that used two Eimac 1000Z tubes and would easily top 1.5KW rms output!
Of course it had a plate transformer that weighed 200 lbs, a 2nd
transformer (for the filaments) that added another 40 lbs to the total..
..I think they were called Kenton Audio Laboratory..and the amp was
dubbed “The Theater Reference Amp”. We had a pair of them at KPFK-FM studios in the listening room..driving a pair of stadium-series (double 15″ drivers) Klipsche Horns. Sounded great!
We market a SET from SAC Thailand the GM 70 which uses 2 ULANOV GM70 output tubes which boasts 70W pure class A output, bandwidth
20hz - 30KHz (-3dB) AT FULL POWER ( 5Hz - 70KHz @ 1W) and less than 5% distortion at FULL POWER (0.08% @ 1W), at a mere £8000 dollars a pair. as about 1/7 of the price I know where I would put my money!