{"product_id":"aiyima-a03-tpa3116-subwoofer-bluetooth-amplifier-hifi-tpa3116d2-2-1-digital-audio-power-amplifiers-50wx2-100w-sound-amplificador","title":"AIYIMA A03 TPA3116 Subwoofer Bluetooth Amplifier HiFi TPA3116D2 2.1 Digital Audio Power Amplifiers 50Wx2+100W Sound Amplifier","description":"\u003ch4\u003eSPECIFICATIONS\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eAIYIMA Model\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003eA03\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBluetooth version\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003e5.0\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003eAiyima\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCertification\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003eCE, FCC, RoHS, KC\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eChannels\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003e3 (2.1)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFeature\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003eSubwoofer amplifier\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFeature 1\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003eBluetooth amplifier\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003eNone\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMaximum Power Per Channel\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003e100 W\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eModel Number\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003eA03\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePackage\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eoutput power\u003c\/span\u003e: \u003cspan style=\"color: #333;\"\u003e50Wx2+100W\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"detailmodule_html\"\u003e\n\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv class=\"aezxzs_rgscon\"\u003e\n\u003cmap name=\"aezxzs1714138341961kaueho55tgg3sa35dd4t98\"\u003e \n\u003carea shape=\"rect\" coords=\"29,157.07500457763672,929.0042562247285,569.048783835435\" href=\"https:\/\/www.aliexpress.com\/item\/detail\/1005006890777045.html\" target=\"_blank\"\u003e\n \u003c\/map\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/HTB1sta4aiHrK1Rjy0Flq6AsaFXaX.jpg\"\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"detailmodule_html\"\u003e\n\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv class=\"detailmodule_html\"\u003e\n\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv class=\"detailmodule_html\"\u003e\n\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv class=\"detailmodule_html\"\u003e\n\u003cdiv class=\"detail-desc-decorate-richtext\"\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan style=\"background-color: rgb(0, 176, 240);\"\u003eFeatures:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e1. \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cstrong\u003eSupport two input\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e, one \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003eAUX input\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e, connect wired analog signal input; another one \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003e\u003cstrong\u003eBluetooth 5.2 wireless input\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e, can connect with mobile phone, computer and other Bluetooth devices.\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e2. Support the frequency adjustment of the subwoofer, you can adjust the bass frequency according to your needs.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e3.  support the bass frequency adjustment of the left and right satellite boxes, making the left and right speaker output more playable; in addition, the left and right speakers can also be used when the subwoofer is not connected\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e4. The Bluetooth part adopts the imported \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003eQCC304X \u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003ehigh quality Bluetooth receiver, and the internal uses 4 NE5532 op amps, 3 of which can be plugged and unplugged, which is convenient for customers to change different styles. Op amps, increase playability.\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e5.  Material, plug-in capacitors all use original imported goods,large reservoir.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e6. No switch sound\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e7. Large heat sink, long-term high-power stable work\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e8. \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cstrong\u003ePower supply voltage: DC12V-24V\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e, current 3A or more, voltage socket 5.5*2.5mm, external negative internal positive \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003e\u003cstrong\u003e(recommended DC24V 8A)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e9. \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cstrong\u003eOutput impedance 4-8 Ohm\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e10. \u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003eOutput power left and right channel 50W+50W 4 ohm load , subwoofer 100W .\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e2.1 channel.\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e11. Frequency response: 20-20KHz\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e12. Distortion: 0.1%\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e13. Signal to noise ratio:\u0026gt; 82db\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e14. Sensitivity: 82db\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e15. Left and right channel bass adjustment range: +12db -14db\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e16. Left and right channel treble adjustment range: ±10db\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e17. Subwoofer cut-off frequency: 40-240HZ\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e18. The function of the knob from right to left is: total volume adjustment, left and right channel treble adjustment, left and right channel bass adjustment, subwoofer volume adjustment, subwoofer frequency adjustment.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan class=\"EzKURWReUAB5oZgtQNkl\" style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003echipset：TPA3116*2+QCC304X+NE5532P*3+TL072\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan class=\"EzKURWReUAB5oZgtQNkl\" style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eBluetooth chip：QCC304X \u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan class=\"EzKURWReUAB5oZgtQNkl\" style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eBluetooth 5.2 support：AAC,SBC,aptX,aptX-LL,APTX-HD\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan class=\"EzKURWReUAB5oZgtQNkl\" style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eOP amp chip：NE5532*3\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan class=\"EzKURWReUAB5oZgtQNkl\" style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eReplaceable OP amp chip：OPA2604，OPA2134, LM4562, JRC5532 ect\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan class=\"EzKURWReUAB5oZgtQNkl\" style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eProduct size: 130*122*33mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan class=\"EzKURWReUAB5oZgtQNkl\" style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003ePacking size: 280*180*60mm\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan class=\"EzKURWReUAB5oZgtQNkl\" style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003eProduct net weight: 570g\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan class=\"EzKURWReUAB5oZgtQNkl\" style=\"font-size: 18px; font-family: arial, helvetica, sans-serif;\"\u003ePacking（with Product）weight: 735g\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan style=\"background-color: rgb(238, 236, 225);\"\u003eAbout the signal line\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003eSignal lines are used to transmit weak small signals, and small signals are more susceptible to interference. A normal signal line is required to have a shield.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003eIt is best to test the signal lines as good as possible. Even with very good signal lines, you will still be disturbed when using your mobile phone as a signal source.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan style=\"background-color: rgb(238, 236, 225);\"\u003eAbout the signal source\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003eThe most commonly used signal sources are mobile phones and computers. The quality of audio signals output by mobile phones and computers according to different brand models is also different. Generally speaking, if the quality of the sound signal directly from the computer motherboard is relatively poor, it cannot be heard at a small volume, but it will be obvious after the amplifier is amplified.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003eIf you are not satisfied with the sound quality of the computer itself, you can purchase a USB decoder (equivalent to an external USB sound card) from the store to improve the sound source and greatly reduce the noise. The method of judging the source of noise is relatively simple. Do not insert the input signal into it, turn the amplifier volume up, and listen to the noise in the speaker. If there is no noise, the noise comes from the source or signal line.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003ePrecautions for use:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e1. Do not use cheap audio signal lines These lines are not shielded by themselves. High-frequency noise will be introduced. The louder the potentiometer rotates, the larger the noise will become, and the sound is very good, such as Akihabara. Quiet as deep sea, no whistling\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e \u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e2. The correct order of use is to connect the power supply of the notebook power supply and the power amplifier first, and then let the notebook power supply be connected to the mains. The wrong way is to first connect the laptop power to the mains and then connect the laptop plug to the digital amplifier. Because the digital function has a filter capacitor inside, these will produce a slight low-voltage spark for 0.1 second, although there is no impact on performance, but this way The habit is not good either.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e3. Use a power supply with as much current as possible. If you only use 2-3A power supply, the output performance will be greatly limited.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003eTip:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003eTo have enough output power if the audio input is sufficient and the supply voltage\/current is sufficient. The power supply voltage is higher and the relative power will be larger. The speakers with different impedances will have different output powers. In the case of sufficient voltage and current, the larger the ohms of the horn, the smaller the relative sound power. Please pay attention!\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e\u003cspan style=\"background-color: rgb(0, 176, 240);\"\u003ePackage included:\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e1PCS 2.1 Bluetooth 5.2 Digital Amplifier\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(246, 11, 11); font-size: 16px;\"\u003e\u003cspan style=\"color: rgb(246, 11, 11); font-family: arial, helvetica, sans-serif;\"\u003e(optional)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cspan style=\"font-family: arial, helvetica, sans-serif;\"\u003e1PCS DC24V 4A Power Supply\u003c\/span\u003e\u003c\/span\u003e\u003cspan style=\"color: rgb(252, 10, 10); font-size: 16px;\"\u003e\u003cspan style=\"color: rgb(252, 10, 10); font-family: arial, helvetica, sans-serif;\"\u003e(optional)\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003eWarranty：24 Months\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/HTB14Di1aizxK1Rjy1zkq6yHrVXab.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S1f258641b4b2427a9f7fcf51bc1351990.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H4d98a477ac0c45c09dba48c1bdc31401V.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/H0038a37f2e8244828a2ee8be9f096098G.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S99ea4717660a4bc49cc4bce45fbcc13cB.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sa8ce2f35d59c4a218e8418b7569fcaf38.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S1c01c3cd504c4c5b83a187db944d8a07G.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S073d114e5e62469494c2d07306765587e.jpg\"\u003e\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sf386c8b89593421db219b8fc612b2c9cN.jpg\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"AiyimaTechnology Store","offers":[{"title":"A03 Amplifier US \/ China Mainland","offer_id":47882053746910,"sku":"32916250260-A03 Amplifier US-China Mainland","price":91.76,"currency_code":"USD","in_stock":true},{"title":"A03 Amplifier EU \/ China Mainland","offer_id":47882053812446,"sku":"32916250260-A03 Amplifier EU-China Mainland","price":91.76,"currency_code":"USD","in_stock":true},{"title":"A03 Amplifier EU 1 \/ China Mainland","offer_id":47882054303966,"sku":"32916250260-A03 Amplifier EU 1-China Mainland","price":91.76,"currency_code":"USD","in_stock":true},{"title":"A03 Amplifier US 1 \/ China Mainland","offer_id":47882054861022,"sku":"32916250260-A03 Amplifier US 1-China Mainland","price":91.76,"currency_code":"USD","in_stock":true},{"title":"A03 Amplifier AU \/ China Mainland","offer_id":47882055123166,"sku":"32916250260-A03 Amplifier AU-China Mainland","price":91.76,"currency_code":"USD","in_stock":true},{"title":"Only A03 Amplifier \/ China Mainland","offer_id":47882055319774,"sku":"32916250260-Only A03 Amplifier-China Mainland","price":74.36,"currency_code":"USD","in_stock":true},{"title":"Only A03 Amplifier 1 \/ China Mainland","offer_id":47882055418078,"sku":"32916250260-Only A03 Amplifier 1-China Mainland","price":74.36,"currency_code":"USD","in_stock":true},{"title":"A03 Amplifier UK \/ China Mainland","offer_id":47882055549150,"sku":"32916250260-A03 Amplifier UK-China Mainland","price":91.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/1053\/0782\/files\/S4199a65fd6b6416983dc5d683794feccD.webp?v=1770279313","url":"https:\/\/hemorium.com\/en-au\/products\/aiyima-a03-tpa3116-subwoofer-bluetooth-amplifier-hifi-tpa3116d2-2-1-digital-audio-power-amplifiers-50wx2-100w-sound-amplificador","provider":"HemoRium","version":"1.0","type":"link"}