<div class="detailmodule_dynamic"><kse:widget data-widget-type="customText" id="1005000004074434" type="relation"></kse:widget></div><div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><div><br/><span style="font-size:20px"><strong>Features:</strong></span><br/>1. Made of high-quality materials with three-dimensional sound effects<br/>2. DC 12V power supply, 2.1 channel output, stable performance<br/>3. Dual channel output, output impedance of 4 Ω, output power of 2 * 15W+30W<br/>4. Onboard volume knob, which can freely adjust the volume level<br/>5. A circuit with D-class efficiency and the ability to bring true high-end sound quality</div><div><br/></div><p><span style="font-size:20px"><strong>Parameters:</strong></span><br/>Product name: Audio amplifier board<br/>Product model: XH-A355<br/>Function type: Amplify audio<br/>Chip type: Class D<br/>Chip model: YDA138-E * 2<br/>Power supply voltage: DC12V<br/>Standby current: 60mA<br/>Output channel: stereo * 2+bass * 1<br/>Output power: 2 * 15W+30W (4 Ω)<br/>Signal to noise ratio: 88%<br/>Product size: 80 * 60 * 15mm<br/>Installation size: 73mm<br/>Installation aperture: 3mm</p><p><strong>Frequently Asked Questions:</strong><br/>1. When the volume is turned up, the sound becomes stuck and intermittent. After the volume is turned down, it can play normally.<br/>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.<br/>Reason 2: If the power supply is not a problem, it is possible 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 jamming and the speaker may burn out.<br/>2. When playing music, there is too much noise, or there is also background noise when not playing music.<br/>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 possible. Another possibility 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&#x27;s amplifier board. We can add an audio isolator or coupling capacitor test to see if it can be removed.</p><p><span style="font-size:20px"><strong>Package include:</strong></span><br/>1X audio amplifier board<br/><br/></p></div></div><p><br/></p>