Four Input, 60W Mixer-Amplifier

Crown's 135MA and 160MA are high value mixer-amplifiers for commercial audio. They provide 8-ohm and constant-voltage outputs (70V and 100V). Typical uses are paging, background music, and music-on-hold. The 135MA provides 3 inputs (each with a volume control) and a 35W amplifier output. The 160MA provides 4 inputs (each with a volume control) and a 60W amplifier output. Other features include priority muting, voice activated muting, phantom power, and bass and treble controls.


·       3 inputs (each with a volume control), and one 35W amplifier output channel in 135MA

·       4 inputs (each with a volume control), and one 60W amplifier output channel in 160MA

·       Ideal for paging, background music, and music-on-hold

·       Balanced Phoenix-type mic/line input, telephone output, dual RCA stereo music inputs, screw-terminal speaker outputs

·       Priority muting by VOX or external switch

·       Bass and Treble controls on master output


Frequency Response (at 1W from line out)

50Hz to 20Hz ± 1dB 19Hz to 34kHz +0, -3dB

Signal Noise Ratio (ref. to rated power, master

volume at minimum)

Mic: >58dB

Line: >60dB

Telephone: >60dB

Inputs 2 or 3: >78dB


< 0.5% at rated power at 1 kHz,

< 0.1% at 5W at 1 kHz

Input Sensitivity (for full output at maximum gain)

Input 1: Mic 3mV, Line 800mV

Input 2: 400mV

Input 3: 400mV

Input 4: 400mV

Crosstalk (at 1kHz)


Line Output Level (nominal)

1V into 10kΩ

Phantom Power

15 VDC


9.5 in (24.1 cm)


4.1 (10.5 cm)


13.9 in (35.2 cm)


12lb (5.6kg) 

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