{"product_id":"aiyima-upgrade-s400-audio-bookshelf-active-speakers-studio-monitor-3-inch-bluetooth-usb-dac-hifi-home-subwoofer-system-tv-pc","title":"AIYIMA  Upgrade S400 Audio Bookshelf Active Speakers Studio Monitor 3 Inch Bluetooth USB DAC HiFi Home Subwoofer System TV PC","description":"\u003ch1\u003eSPECIFICATIONS\u003c\/h1\u003e\u003cp\u003e\u003cspan\u003e1\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eThe s400 adopts a wooden cavity and pvc iron sheet process. The wooden cavity can minimize resonance to the greatest extent. It is aesthetically pleasing while ensuring the reproduction of sound\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003e2\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eThe s400 adopts the tpa3118 power amplifier chip, which is a high-efficiency Class D audio amplifier chip from TI in the United States, with a power output of up to 50w*2\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003e3\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eThe mid and low-frequency speakers of the s400 are equipped with 3-inch fiberglass cones. The features of this speaker include good rigidity and resistance to deformation, which can better ensure powerful and undistorted bass. The high-frequency speaker uses a 20-core silk membrane tweeter , It perfectly restores the sound\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003e4\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eThe s400 can be digitally connected to a speaker via a usb interface, eliminating the traditional analog signal transmission distortion. The transmission rate can reach 16-bit 48KHz, equivalent to DVD sound quality. The advantage of DAC transmission is that there is no need to spend a lot of money on old analog signal cables, resulting in less distortion and stronger sound interpretation power\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003e5\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eThe s400 is equipped with a sub output interface, which can be connected to an external active subwoofer to form a 2.1 solution, making it convenient for users to build their own small home audio-visual solution\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eAiyima Model\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eS\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eAudio Crossover\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eFull-Range\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBattery\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBluetooth Version\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e5.3\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBrand Name\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eAiyima\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eBuilt-in Microphone\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCabinet Material\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003ePVC\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCategory\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eSpeakers\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCertification\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eCE,FCC,RoHS\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eChannels\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e2 (2.0)\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eCommunication\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eInduction\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eDisplay Screen\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eFrequency Range\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e45Hz-20KHz\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eHigh-concerned chemical\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eImpedance\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e4-8 Ohm\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eInbox adaptor\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eInput\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eBluetooth ,optical fiber ,RCA ,USB ,Sound card\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eInput Power(W)\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e50-99 W\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eInput\/Output\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eUSB\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eIntelligent Personal Assistant\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNone\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMain control chip\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eBP1048B1\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eMaterial\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMDF \/ABS\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eNumber of Loudspeaker Enclosure\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e2\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOrigin\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eMainland China\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eOutput Voltage\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e100 W\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePMPO\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e100 W\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePower Source\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNone,DC\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003ePower amplifier chip\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eTPA3118\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSNR\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e≥ 85dB\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSound Mode\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eHi-Res Sound Mode,Smart Sound Mode,Live Sound Mode,Extra Bass Mode,Standard Mode\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSpeaker Type\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eBookshelf\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eSupport APP\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eTouch Screen\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eNo\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eUse\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eHome\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eVoice Control\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eWaterproof\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003eYes\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eWeight[g]\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e2.64\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003efrequency response range\u003c\/span\u003e: \u003cspan style=\"color:#333\"\u003e45HZ to 20KHZ\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cspan\u003eoutput\u003c\/span\u003e: \u003cspan 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