Alctron MA-3 Variable Impedance Microphone Preamplifier
for Dynamic and Ribbon Mics
MA-3 Variable Impedance Microphone Preamplifier
The Alctron MA-3 is a unique passive microphone preamplifier that is ideal for dynamic and ribbon microphones. It operates on 48v phantom power but does not pass phantom power to the microphone. It provides 25dB gain, and offers an adjustable input impedance up to 15k. A low cut switch is also featured.
Passive ribbon microphones must be correctly paired to the input impedance of the preamp to operate at their full potential. If a preamp’s impedance is too low, the microphone will have to work harder to generate a proper signal. When this happens, the low-end of the mic’s sound will be limited and the transient response will sound flat, degrading the overall performance of the microphone. Some dynamic microphones can also benefit greatly from greater gain provided by a passive preamp like the MA-3
Sturdy and Reliable
With a strong aluminium build, and four foam pads underneath, this unit can withstand extreme conditions without issue.
- Powered by 48v but does not pass it to the microphone
- Variable impedance - from 150Hz to 15KHz
- Provides 25dB gain
- Low Cut Switch
- Gain: 25dB
- Frequency response: 20Hz-20kHz±1dB
- Input impedance: Adjustable
- Noise: <3mv
- Dimensions: 100mm(L) x 90mm (W) x 38mm(H)
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