Technical parameters:
Operating voltage: AC double 26-28V
Input impedance 22K
Amplification about 33 times
Output power 2x68W;
Circuit board size: 120x92.5mm
PCB thickness 2mm, copper thickness 2 ounces

Module design features.
Output center point using DC DC servo
Adopts mixed voltage and current feedback loop
C1237 to form a complete horn protection

Basic configuration:
Amplification adopts LM3886 chip.
Adopts LF353 center point servo
Adopt voltage-current mixed feedback loop
Japan ruby or black gold steel filter capacitors
Germany Siemens decoupling capacitor
Japan Omron silver contact relay

Transformer selection
Output power >150W
Output voltage 26-28V, three-wire type with center tap


Package:
1pc LM3886 Mounted 2x68W DC Dynamic Feedback Amplifier Board