METTA AA multi-channel amplifier modules

SL-AA40x4 40W AB Class 4-channel Power Amplifier

A single-board four-channel power stage for distributed commercial, vehicle, and multi-speaker audio systems.

SL-AA40x4 40W AB Class 4-channel Power Amplifier
Output Power
  • 40W x 4 at 4 ohm THD less than 10 percent
Frequency Range
  • 20 Hz to 20 kHz
Load Impedance
  • 4 ohm / 8 ohm
Power Supply
  • 8V to 18V DC, 12V recommended
Working Temperature
  • -40C to 85C

Product Overview

Four-channel amplifier module

SL-AA40x4 brings higher output power and four audio channels into a compact module, which reduces integration work for multi-speaker or zone-based playback systems.

Integration targets

Typical targets include kiosks, vehicle audio, hospitality sound systems, public address devices, and other projects that need several output channels from one board.

B2B supply fit

The module is positioned for repeatable production use where stable sourcing and predictable mechanical constraints matter more than feature experimentation.

Specifications

Output Power 40W x 4 at 4 ohm THD less than 10 percent
Frequency Range 20 Hz to 20 kHz
Load Impedance 4 ohm / 8 ohm
Input Impedance 20 kohm
Working Temperature -40C to 85C
Voltage Gain 26 dB
Power Supply 8V to 18V DC, 12V recommended
Peak Output Current 4.5 A
Supply Voltage Rejection 65 dB
Audio Input 4-channel RCA terminal
Audio Output 4-channel green terminal socket
Volume Control 1 knob
Power Connector Blue terminal x1
Dimensions 110 x 65 x 38 mm

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