Class D amplifier module have some advantages over class A, B, one-of which is its high efficiency, At normal output there is no need for heatsink, simply because heat dissipation almost nonexistent. At Higher output only a rather small heatsink is required. Another advantage is the AMP's physical size and weight.

SL-A21 is the new design of digital power amplifier module, it is new product for using ISO2092, connection is very simple. It is a MAX700W power @4 ohm, High efficiency and good sound.

2. Application
Power speaker
Public Address System
Computer and laptop
Portable product
Wireless product
TV, DVD and the other product
Home Theater

3. Feature
Working Voltage: Double 20V-50V
When voltage above 35V, R6, R7 change to (2kohm, 3W)
Our current board is R6, R7 (3.9Kohm, 3W), voltage 40-45V
MAX Power: 350W/8ohm double 50V, THD<0.1%
700W/4ohm double 50V, THD<1%
Input sensitivity: 1.6V
Input impedance: 14k ohm
Frequency response: 0-50KHz ± 1dB 10W/8ohm
Standby by current: 50MA
Output impedance: 4~8ohm