1.SAMP-300 energy-saving version, when playing music, if the user leaves, there is no music output for a long time,If this process takes more than 1 minute, the board enters standby mode, and the static power consumption is reduced from over 5W to 0.5W, a decrease of more than 10 times. The heat dissipation temperature is equal to room temperature, which not only saves energy but also extends the life of electronic components. 2.Using two power amplifier modules for TI-TPA3255, the output power separation is much that of a single chip. 3.Full screen shielded low loss sealed inductor, filtering capacitor. 4.SAMP-300 Mode Description:Automatic energy-saving mode: If there is no music output from the amplifier board for more than 1 minute, the board enters standby mode, and the static power consumption is reduced to one tenth of the old; Normal mode: normal operation, whether there is signal input or output, it is in normal working state, and automatic energy-saving is turned off.<br><br>Output power: 600W+600W/2ohms; 315W+315W/4ohms; 200W+200W/8ohms Frequency response: 20Hz - 30kHz +N: 0.006% at 1W/4; Less than 0.01% when clipped Power supply voltage: 19V - 52V Precaution:The higher the input power supply, the greater the power supply current, and the greater the output. The power test was conducted at a power supply of 50V. If replaced with a 24V 36 low-voltage power supply, the output power decrease accordingly. Color: Black Material: PCB+Metal+Components<br><br>Package Contents: 1 Amplifier Board<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.