MA-400
Stereo Power Amplifier
 
 
The MA-400 is a 2 channel stereo power amplifier with the use of 24 carefully selected and matched powerful MOSFET transistors (6 pairs per channel, 12 pairs total). With a rated output power of 250 watts per channel at 8 ohms (500 watts per channel at 4 ohms), the MA-400 is capable of driving any loudspeakers even with low efficiency and low impedance.

Each of the MA-400 power amplifier is handcrafted with the use of highest quality parts and components. The audio grade toroidal transformer is custom wound according to our specifications. Even the heavy-duty special designed heat sinks are custom made in order to meet our standards.


A quote statement from the audio reveiw by Terry London, January 13, 2016:

"The MA-400 has tube-like sonic qualities, such as richer and more natural colors/tonality/timbres, three-dimensional imaging, and a grainless liquidity not often found in solid-state amplifiers. However, this does not come at the expense of transparency and micro-details or a lack of dynamics and lower-frequency extension or control. I believe that--based on performance, quality of parts, and the high level of construction - the Magnus Audio MA-400 stereo amplifier belongs in the higher echelon of solid-state equipment on today's market."

Terry London, Staff Reviewer for hometheaterreview.com

Click Here to read the full review
 
 
 
MA-400 Highlights

  • Advance and sophisticated Class AB design with high output performance.

  • 24 carefully selected and matched MOSFET output transistors of highest quality.

  • Current mirror input for more stable output throughout entire dynamic range

  • Custom wound audio grade toroidal transformer with separate windings for
    left and right channel.

  • Custom made heavy-duty heat sinks with special thick rib design ensure a lower operating temperature.

  • Sophisticated protective circuit ensures highest operational safety for the amplifier and the connected loudspeakers.

  • Integrated power curcuit with time-delay relay to eliminate turn-on thump.

  • Advance layout and wiring techniques guarantee a hum free operation.

  • Switchable balanced (XLR) and single-ended (RCA) inputs.

  • Full metal housing for optimum shielding.

  • Handcrafted in California, USA.

  • Image Gallery


    Specifications

    Rated Output Power: 250 Watts RMS at 8 Ohms
    500 Watts RMS at 4 Ohms
    Frequency Response: +/- 0.1 dB from 10 Hz to 50 kHz
    Signal-to-Noise Ratio: 110 dB
    Total Harmonic Distortion (THD): <0.014%
    Gain: 29.1 dB
    Input Impedance: 35K Ohms (single-ended)
    50K Ohms (balanced)
    Input Sensitivity: 1.75 V RMS
    Output Voltage: 50 V RMS
    Damping Factor: 250, referred to 8 ohms
    Power Consumption: 700 watts continuous
    Inputs: 2 balanced via XLR connector (1 per channel)
    2 single-ended via RCA connector (1 per channel)
    Outputs: 2 pairs high quality binding posts (1 pair per channel)
    Operating Voltage: 100V, 120V, 220V, 230V or 240V at 50 or 60 Hz
    Dimensions: 19 in. W x 8 in. H x 23.5 in. D
    Weight: 100 lbs.
    Warranty: 3 Years Parts and Labor

    Specifications subject to change without notice.