XH-A355 YDA138-E*2 15W+15W+30W Cl D 2.1 Dial Power Amplifier Board Stereo Audio Amplifier Module DC 12V

KSh 4,100

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Features:1. Made of high-quality materials with three-dimensional sound effects2. DC 12V power supply, 2.1 output, stable performance3. Dual output, output impedance of 4 Ω, output power of 2 * 15W+30W4. Onboard volume knob, which can freely adjust the volume level5. A circuit with D-cla efficiency and the ability to bring true high-end sound quality

s:Product name: Audio amplifier boardProduct model: XH-A355Function type: Amplify audioChip type: Cla DChip model: YDA138-E * 2Power supply voltage: DC12VStandby current: 60mAOutput : stereo * 2+ba * 1Output power: 2 * 15W+30W (4 Ω)Signal to noise ratio: 88%Product size: 80 * 60 * 15nstallation size: 73nstallation aperture: 3mm

Frequently Asked Questions:1. When the volume is turned up, the sound becomes stuck and intermittent. After the volume is turned down, it can play normally.Answer: One of the reasons is that due to the low power supply, the total output power of this power amplifier board is 60W. When selecting the power supply, it is recommended to have a voltage of DC12V and a current of around 5A.Reason 2: If the power supply is not a problem, it is poible that the power of the speaker is too low. For example, if a 3W speaker is connected and the volume is turned up, there may be jang and the speaker may out.2. When playing music, there is too much noise, or there is also background noise when not playing music.Answer: The function of the power amplifier board is to amplify the signal. The main source of noise is the radio clutter in the environment that is amplified by the power amplifier board, so as long as it is the power amplifier board, there will be noise. It is recommended to choose audio cables with shielding function as much as poible. Another poibility is that there is noise in the sound source, which is not found in normal phones and MP3 players. Most of it is on some old front-end boards and is not compatible with our company's amplifier board. We can add an audio isolator or coupling test to see if it can be removed.

Package include:1X audio amplifier board