Power amplifiers stereo — Matrix Audio MA-1

Name: MA-1
Brand: Matrix Audio
Rating: 100 (1 reviews)

Description, images, technical data and specifications

Matrix Audio MA-1
Image source — © Matrix Audio

The output stages of the Matrix Audio MA-1 power amplifier are made on discrete elements and operate in class A/B. To reduce the output impedance, ten high-power ONSEMI transistors operate in parallel in each channel to create a push-pull amplification circuit operating in a state of high bias current. At a load with a nominal resistance of 8 ohms, the amplifier provides an output power of 250 watts per channel and 450 watts per channel at a load of 4 ohms.

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Specifications

Model name
MA-1
Input sensitivity (mV)
1480
Input impedance (balanced) (Ω)
40 000
Input impedance (single-ended) (Ω)
20 000
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
2 x 250
Output power (4Ω) (W)
2 x 450
Gain (dBu)
30
Frequency response low +/- 3dB (Hz)
20
Frequency response high +/- 3dB (Hz)
160 000
Signal to Noise Ratio (dB)
119
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
<0.02
Max power consumption (W)
1250
Damping factor
350
Dimensions (mm)
430 × 518 × 201
Weight (kg)
42.4
Official link
https://www.matrix-digi.com/product/103/MA-1

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With a resistance load of 8 ohms, the output power is 110 watts in stereo mode and up to 500 watts in bridge mode. The amplifier body is made of thick aluminum panels, and special supports with ceramic balls are responsible for vibration suppression.