The MA-2050 from Marathon is a professional-quality power amplifier ideal for installed applications. The amp can operate in stereo, parallel mono, or bridged mono modes for terrific versatility. It features XLR and 1/4" inputs, and Speakon and binding post outputs, allowing you to connect to a variety of sound systems. Each channel features an input gain control and LED indicators for signal, overload, and fault.

The amp has a pair of variable-speed cooling fans with front-to-rear airflow for smooth, reliable operation. For further protection and reliability, the amplifier offers circuitry that protects against short circuits, open circuits, overheating, and more. It also has a ground-lift switch to prevent hum caused by ground loops. A voltage selector switch lets you choose between 110/220V operation for use anywhere in the world.

Features

Rackmount design can be installed in any standard equipment rack
Can operate in stereo, parallel mono, or bridged mono modes
XLR and 1/4" inputs, along with Speakon and binding post outputs for versatile connectivity
High-quality Class AB output circuitry
Input level controls on each channel
Integrated compressor prevents distortion
LED indicators for power, signal, clip, and protect
Pair of variable-speed cooling fans with front-to-rear airflow for reliable operation
Integrated protection circuitry for full short circuit, open circuit, thermal, soft start, DC voltage, Sub Electronic and RF protection
Ground-lift switch reduces hum
Selectable operating voltage for worldwide use

Specifications

Power Rating

Output Power 8 (ohms): 2 x 300W
Output Power 4 (ohms): 2 x 500W
Output Power 2 (ohms): 2 x 800W
Output Power BRIDGE 8 (ohms): 1000W
Output Power BRIDGE 4 (ohms): 1300W

Frequency Response @ Half Power: 15Hz - 25KHz (+0/-1dB)
THD+Noise at 1KHz Full Power: <0.035%
IMD 60Hz & 7KHz, 4:1: <0.04%
Signal to Noise Ratio: >105dB
Slew Rate (Input Filter Limited): 40V/uS
Damping Factor 1KHz@8 ohm: >400:1
Input Sensitivity: 1.228V
Input Impedance: 10k ohm Unbalanced
Input Connectors: Female XLR-3 & 6.35mm TRS Jack
Output Circuit Type: Class AB
Output Connectors: 4 Pole Speakon & Binding Post
Protection:Full short-circuit, Open circuit, Thermal,
Soft-start, DC voltage, Sub/Ultrasonic, RF
LED Indicators (per channel): Bridge, Parallel, Power, Signal, Clip, Protect
Panel Controls: Front-2 input attenuators REAR Ground lift, mode selection, compressor
Cooling: Front-to-Back via 2 variable speed fans
Power: 1 x Blue LED, Signal: 2 x Green LED, Clip: 2 x Red LED, Protect: 1 x Red LED
Power Supply Voltage: Voltage selectable: 110V \ 220V AC
Power supply fuse (250): 8A
Dimensions: 19 W x 18.7 L x 4 H inches

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