ขาย วอร์มต้นไม้ Dc 5v Class D 2x3 W Usb ขนาดเล็ก Pam 8403 ราคาที่ดีที่สุด

Welcome to the Warmtree store, I am happy to serve you Features: Can use the computer USB port 5V power supply or using a mobile phone charger USB port 5V power supply power can also be used high efficiency:90% can provide 3W (left channel) +3 W (right channel) output power in the 4Ω load and 5V power supply conditions A class, B class amplifier such efficiency is only about 30% D class amplifier is highly respected today D class amplifier efficiency is extremely high, not because of temperature affect the sound quality but do not add heat sink and take less space noise canceling circuit was built in the amplifier board power on / off without pop noise module has a short-circuit current protection and over-temperature protection Application: LCD TVs, monitors, Laptop Portable Speakers Portable DVD players, game consoles Phone / speakerphone Specifications: Operating voltage: 2.5V-5.5V Speaker With:4-8ohms recommended:4 ohms Speaker Power :2-8W Size:21 x 18 x 3.4mm(L x W x H) Color:As the pics show Net weight:1g Package Contents: 1 x Amplifier Board Note: Left and right channel output of the "negative" and can not be together, otherwise it will burn IC, and speaker(load) should be connected before power on.