The 100 watt per channel, four-channel MA 4 amplifier achieves unparalleled power density, reliability and features in a space saving 1U, 19 inch rack mount chassis weighing only eight pounds (3.6 kg). A universal-voltage switching power supply provides near perfect Power-Factor, reducing peak currents to ⅓ compared to non power-factor-corrected supplies. A long list of unique features ranging from constant load power to built in automatic redundancy switching to advanced dynamics control, qualify the MA 4 for the most demanding fixed installation applications. The MA 4 excels in music & paging systems, small conference rooms and speech reinforcement applications requiring multiple amplifiers. Advanced dynamics control algorithms adapt to changes in temperature, load impedance and sensitivity setting. The result is a truly plug-and-play amplifier that ensures excellent signal integrity at all times.

• Universal voltage, power-factor-corrected power supply
• Very low inrush current
• 100 watts x 4 channels in 1U chassis
  • If you don't need this much power, please see the MA3 Multichannel Amplifier
• Built-in load monitoring
• Remote fault reporting and redundancy switching
• Optional 4-channel 70/100 volt transformers in 1U chassis
• Adjustable high-pass filters and remote level controllable
• Advanced dynamics control adjusts for sensitivity setting, load Z and temperature