Biamp MA120 120W Single Channel Mixing Amplifier w/ Volume & Microphone Control

The revolutionary MA120 mixing amplifier offers the enduser an unseen cutting-edge design and ease-of-use. The ground-breaking intuitive front panel is clear and easy to use without any unnecessary bells and whistles. The volume control rotary on the front panel is prominent, illuminated, bigger and put in the forefront while the mic volume control is smaller and recessed.

This class-d mixing power amplifier offers 120 watts in 70 or 100 volt mode and comes with three mic inputs balanced, along with four stereo line, mono summed inputs.

The MA120 is a 120W single channel mixing amplifier. Designed for ease of use, the front panel of the MA120 includes volume and microphone controls, providing immediate visual feedback regarding system operation. The MA120 is equipped with four priority levels for audio routing: one emergency input, one paging input, two mic/line inputs, and four stereo line, mono summed inputs. It’s audio performance, easeof-use, and versatile feature set makes the MA120 ideal for a variety of professional audio applications.

Features

Single channel; 120 watts of continuous power

Supports 4Ω and 70V/100V outputs

Class D amplifier topology

Intuitive front and rear panels

Four priority levels for audio routing

24V priority output overrides local volume controls

Dedicated emergency input with mute all switch

Paging mic input with contact closure and chime

Two mic/line level inputs with 48V phantom power

Four stereo inputs

Fanless operation

Internal universal power supply

Auto standby mode

Rack mountable (2RU)

CE marked, UL listed, and RoHS compliant

Specifications

INPUTS

Number of Inputs

Emergency (line level with contact): 1

Paging Mic (mic level with contact): 1

Mic/Line (balanced): 2

Stereo Line (unbalanced): 4

Input Priority Levels: 4

Priority Input Contact: Yes

Chime: Yes

Tone Control: Yes

Wall Panel Controls: Yes

VOX Mute: Yes

Music Level Control: Yes

Front Panel Indicators: Signal present, clipping, overload condition, emergency mode active, paging active, VOX active

Emergency Input

Nominal Input Sensitivity: 0 dBV (1 Vrms)

THD+N (Pre-Out, @ -6dB): < 0.5%

Frequency Response (-3dB): 45 Hz – 20 kHz

Input Impedance: 5 kΩ

Paging Mic

Nominal Input Sensitivity (Bal. Mic): -45 dBV (5.6 mVrms)

THD+N (Pre-Out, @ -6dB): < 0.4%

Frequency Response (-3dB):

Balanced Mic: 165 Hz – 20 kHz

Unbalanced, Balanced Line: 20 Hz – 20 kHz

Gain: -15 to +15 dB

Chime Length: 2 sec

Input Impedance: 2 kΩ

Mic A, B

Nominal Input Sensitivity:

Balanced Mic: -45 dBV (5.6 mVrms)

Balanced Line: -12 dBV (250 mVrms)

Unbalanced Line: -12 dBV (250 mVrms)

THD+N (Pre-Out, @ -6dB): < 0.2%

Frequency Response (-3dB):

Balanced Mic: 165 Hz – 20 kHz

Unbalanced, Balanced Line: 20 Hz – 20 kHz

Phantom Power (balanced only): +48VDC (7mA/input)

VOX Attenuation (Mic A, B, Inputs 1-4): 30 dB

Input Impedance: 2 kΩ

Inputs 1-4

Nominal Input Sensitivity (Unbal. Line): -12 dBV (250 mVrms)

THD+N (Pre-Out, @ -6dB): < 0.1%

Frequency Response (-3dB): 20 Hz – 20 kHz

Input Impedance: 10 kΩ

OUTPUTS

Number of Output Channels: 1

Output Connectors: 4-pin, 0.3 inch (7.6 mm) Euroblock

70V/100V Mode: Yes

Low Impedance Mode: Yes

Priority Output Contact: Yes

Minimum Operational Load: 4Ω

Amplifier

Topology: Class D

RMS Output Power (1% THD): 120 W

Dynamic Power: 150 W

SNR (1% THD): > 90 dB

THD+N (@ -6dB): < 0.5%

Protection: Temperature, overcurrent, overvoltage, undervoltage

Priority Output

Voltage: 24V

Max Current: 0.5A

Pre-Out

Nominal Output Level: 0 dBV

Standby

Wakeup Sensitivity:

Inputs 1-4: -43 dBV (6 mVrms ± 10%)

Mic A, B (RCA): -50 dBV (5 mVrms ± 10%)

Mic A, B (Balanced, VOX off): -74 dBV (0.3 mVrms ± 10%)

Time to Auto Standby: 10 min

Power Consumption (100-240VAC 50/60Hz)

Normal Operation: 160W

Idle Operation: 12.5W

Standby Mode: 0.5W

Cooling: Convection

Overall Dimensions

Height (without feet): 3.5 inches (89 mm)

Width: 19 inches (483 mm)

Depth: 11.8 inches (300 mm)

Weight: 11.0 lbs (5.0 kg)

Environmental

Ambient Operating

Temperature Range: 32 - 95° F (0 – 35° C)

Humidity: 0-95% relative humidity (non-condensing)

Altitude: 0-6,600 ft (0-2000m) MSL

Compliance:

FCC Part 15B (USA)

UL listed (USA and Canada)

CE Marked (Europe)

RoHS Directive (Europe)