This SHOW multiplex amplifier is perfect for setting up a PA where zones are required. The MA-4120 has four zones selectors for each output channel with LED indicators and 5 channel independent inputs with gain, treble, bass, and volume control. In addition, MA-4120 also combines 5 channels of operation, power amplifier, balanced XLR combo inputs, stereo phone and monitor outputs make this a complete professional zone mixer amplifier.


Perfect for use in super-markets, churches, convention halls, footy clubs and schools. High performance, excellent sound quality and hassle-free operation make this amplifier an ideal choice for installations.




4 independent channels
4 zone selectors for each output CH with LED indicator
5 sets of gain, treble, bass and volume controls
5 groups VU meter for output and 2 RCA inputs
4 XLR+1/4 TRS combo input and 1 RCA input
Telephone paging function, and monitor output
Priority of Input 1. VOX mute function
Input matrix
Output Impedance:4Ω, 8Ω.
High Output  Voltage: 25V, 70V, 100V
Power Output RMS 120W x 4 at 4Ω
Intelligent cooling fan
19" Rack mount type (3U size)


Power Supply: AC 230V/ 50Hz Selectable
Inputs: Sensitivity; CH1-3: Mic.: -42dB; Line: -20dB balance; CH4-5: Line: -10dB unbalance; Telephone paging: -25dB; Phantom: 15V
Frequency response: 60-17000Hz-3dB
Tone control: Treble: 12dB at 10kHz; Bass: ±12dB at 100Hz
T.H.D: <1%
S/ N ratio: Mic.>60 dB; Line>70 dB; Tel. >60 dB
Priority for Mic-1: Sensitivity: -35 dB
Outputs impedance: 4Ω, 8Ω
Output constant voltage: 25V -70V -100V
Power output: RMS 120W x 4 at 4Ω
Indicate LED: 5VU meters (LED type); 1 Power indicator; 5 Mute indicators
Dimensions: 483 x 132 x 310mm (WxHxD)
Weight: 20.5 kg


SKU TP-MA-4120
Barcode # 1001609
Brand SHOW
Shipping Weight 20.5000kg
Shipping Width 0.580m
Shipping Height 0.240m
Shipping Length 0.520m