MA 500 USB is a 150W stereo amplifier per channel, with two RCA line inputs on the back, recording output and on its front a USB, SD and Bluetooth reader module. The device also incorporates 5 microphone inputs, 3 of them Jack 6.3mm on the front panel and two of them on the back XLR. The professional can modify the gain control of each of the microphone signals, in addition to the possibility to add effects such as echo, delay and tone (bass and treble). On the front there are different controls, such as the master volume, the general volume of the input signals and the management controls of the USB interface, such as the mode and control of the audio tracks.

- Power: 2 x 150W.
- Frequency response: 20Hz? 20 kHz.
- Total Harmonic Distortion: <0.1%.
- S / R ratio:> 100V / us.
- Damping factor:> 100: 1 <-92 dB.
- DC output: <± 5mV.
- Input impedance: Microphone: 10K Ohms. Line: 10k Ohms.
- Output connection: L, R.
- Power: AC 220V (± 10%) 50 / 60Hz.
- Fuse: T5A.
- Dimensions: 430 x 132 x 440 mm.
- Weight: 12.5 Kg