LA4440 BTL 19W 19W Stereo Amplifier Board without ICs Kit

Description 100% brand new and high quality Must install pair of LA4440 ICs to complete the amplifier Must attach 200g heatsink before applying voltage No input state, you almost can not hear the noise when your ears closed to the speaker. Excellent sound quality The board needs to install the appropriate size of the radiator (should not be small) Output power: 19W 19W Out Speaker: 4 ~ 8O, 20W TO 40W DC Power Supply: 12V to 14V at least 5A(8A better) LA4440 12V pure DC power amplifier board parts level after 2 19W 19W dual channel electronic DIY Kit Boot without current shock, high signal-to-noise ratio, no ears close to the speakers can hardly hear the noise input conditions; Sound great, high fine, soft, fully, no obvious harsh, bass strong, full, strong, and freely .Recently saw a few customers said calorific value is big, may be not the cause of the radiator or radiator small, to inform customers: the board will be required to have appropriate to the size of the radiator (small) appropriate big unfavorable ICs and heat sinks are not included in kit.