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Comparison Project Ya Patrol MP4 Digital Disc Box Car FM launches MP3 CD / VCD / DVD disc Box Principles of audio and video decoding off the external audio signals to CD / VCD / DVD Signal FM converted directly through a dedicated radio, dish off a letter box decoder Transmitted to the main stereo wiring harness from the car stereo wiring harness pass through a dedicated revenue numbers Play the first to receive a letter machine sound transmission to the host audio playback Number Play Microcomputer chip high-fidelity sound quality FM transmit and receive letters CD / VCD / DVD a few Decoding, wiring harness connections, number conversions loss, according to input, original sound Original sound, Du ring the signal susceptible to outside interference effect is good Should never interfere with sound quality comparable to CD, noisy, poor sound quality Capacity to support large-capacity SD / MMC Car MP3 comes with memory, CD / VCD / DVD Optical , U disk, card reader, MP3, U disk, etc., store expansion disc normal capacity, / MP4, mobile hard disk, sea and more difficult to show a relatively easy extension The amount of storage extension The price several hundred dollars to tens of dollars - several hundred dollars to several hundred dollars - a few thousand dollars Content network movies, videos, is limited to MP3, WMA, etc. is limited to CD / VCD / DVD MP3, WMA, etc. audio files and can be free to the supported formats Internet free download, download compilation, editing easier Series is very convenient Controls one of the original car stereo panel external cigarette lighter, speaks of the original car stereo controls, but the Control, can support multi-function for control of inconvenience, such as the replacement of modified CD machine To the steering wheel, operating an impact on driving safety first, the original multi-direction The whole disk may fail to facilitate Appearance MP4 compact disc box hosts, such as the United States are generally required to replace the cigarette lighter then converted CD Concept can be placed in glove boxes, or devices to take power, destruction of the original car nose, you may want to cut Instrument panel storage box, without compromising the interior harmony, video broken beam, and and the original Harm the overall appearance original equipment interior trim ring uncoordinated Original sound original external power head power supply, turn off than replace the modified CD -Bit auto-power, turn off automatically power off from there nose, you may want to cut Dynamic power, safe and reliable security risk then break beam power, save In the security risk Video support many video formats do not support is limited to VCD / DVD Enjoy network video formats supported by Excellent anti-seismic seismic seismic better anti-jamming, anti-interference seismic poor, anti-stem The worst disturbance Good Other USB port available for mobile phones, no And other equipment charge

回答者：vicehbz2016-08-30 00:00