详细介绍：
12独立输入通道，前级混音，120W
MA-1212
MA-1212 Commercial Mixer Paging Amplifier
The MA-1200 series of professional rackmount mixer/amplifiers are designed for larger background music/paging and public address system installations where expandibility and flexibility is the ticket. These new units are exceptional values, loaded with features and are easy to install in a variety of system designs.
The MA1212 features 10 balanced mic or line inputs all available with 24v phantom power and 2 auxiliary stereo summing inputs with 4 level sensitivity adjustment. 120 watts of amplifier power is available either into 70/100v or 4 Ω loads. Also included is a balanced line level output for adding additional power amplifiers. The unit also features 24 volt powered operation for emergency power requirements. An adjustable level telephone paging input along with a independently adjustable low power monitor output are included. Integrated rack ears allow for rack mounting without additional accessories.
Specifications
Continuous rated power (1k Hz, THD 1%) 4Ω 120 Watts
Input Impedance (balanced) 47 kΩ
Electronics Type Amplifier
Total harmonic distortion < 0.5 %
Intermodulation Distortion (SMTPE) < 0.5 %
Signal-to-noise ratio (A–weighted) > 90 dB
Input Sensitivity .75mV
Weight Net 12.7 kg ( 28 lbs )
Dimensions (HxWxD) 132.5 x 483 x 320 mm
(5.22" x 19.02" x 12.6")
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