Audac AMP523MK2 Mini Stereo Amplifier

The Audac AMP523MK2 is a compact stereo installation amplifier designed for professional audio systems in commercial environments. It delivers reliable amplification for background music and speech while offering flexible connectivity and control options.

The amplifier includes multiple stereo line inputs and a balanced microphone input, allowing easy integration with audio sources such as media players, mixers, and paging microphones. It also supports RS-232, RS-485, and TCP/IP control, enabling integration into automation systems or remote control through the Audac Touch™ platform.

With its compact form factor, passive cooling design, and high efficiency, the AMP523MK2 is suitable for installation in meeting rooms, classrooms, retail environments, hospitality venues, and corporate AV systems.

Key Features

• Compact stereo installation amplifier
• Output power of 2 × 15 W at 4 Ω
• Bridge mode output of 30 W at 8 Ω for satellite applications
• Four stereo line inputs and one balanced microphone input
• Remote control via RS-232, RS-485, and TCP/IP
• Compatible with Audac Touch™ control platform
• Passive cooling for silent operation
• High efficiency design

Amplifier Performance

• Continuous power output of 2 × 15 W at 4 Ω and 2 × 7.5 W at 8 Ω.
  In bridge mode the amplifier can deliver 30 W at 8 Ω.
• Total harmonic distortion plus noise is less than 0.1% at 1 kHz.
  Signal-to-noise ratio is greater than 95 dB with crosstalk below −75 dB at 1 kHz.

Inputs

• Four stereo unbalanced line inputs with an impedance of 20 kΩ and sensitivity between −10 dBV and +4 dBV.
  One balanced microphone input with 47 kΩ impedance and sensitivity between −45 dBV and −20 dBV.
  Connections are provided through an 18-pin Euro terminal block (3.81 mm pitch).
• Additional communication interfaces include RS-485 with differential audio via RJ45, RS-232 via SUB-D9 connector, and Ethernet via RJ45.

Outputs

• One stereo loudspeaker output provided through a 4-pin Euro terminal block (5.08 mm pitch).

Power and Protection

• Power supply: 24 V DC using the included PSD241 switching power supply (100–240 V AC, 47–63 Hz).
  Standby power consumption is less than 3 W and amplifier efficiency is approximately 87%.
• The amplifier includes protection against overheating, DC faults, short circuits, and built-in limiting.

Control

• Control is available through RS-232, TCP/IP, and RS-485, with two socket connections for AUDAC Touch™ integration.