Why hdmi inputs?

Discussion in 'AV Receivers & Amplifiers' started by tomfun69, Feb 6, 2009.

  1. tomfun69

    tomfun69
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    I know this is a very obvious question for most people on here.but i wanted to know what advantage does an hdmi connection give over phono or optical?
     
  2. ChrisAV

    ChrisAV
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    HDMI can carry both video and audio signals in a single cable. Also it supports HD video to 1080P (though component will also do this, though restricted on some formats) and HD audio (which I don't believe any other cable, save muliti-channel, can support).

    Chris
     
  3. Trollslayer

    Trollslayer
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    By carrying audio and video it means both are selected together and the video is then output to the TV. Also, scaling can be carried out in the receiver plus conversion from s-video, component etc.
     
  4. Mark.Yudkin

    Mark.Yudkin
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    In addition to what Chris says, HDMI (any version) has an audio bandwidth of 36.86MHz, which means it can support up to 8 channels of uncompressed 24 bit 192KHz audio. Optical and coax (phono) are limited to 1.50925 MB/s. HDMI is therefore a pre-requisite for the lossless audio formats of Bluray.

    HDMI is not a requirement for transcoding or scaling, although its higher bandwidth makes it a convenient target.
     
    Last edited: Feb 6, 2009
  5. tomfun69

    tomfun69
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    Thanks for the help there, would this improve the audio from an upscaling dvd player also or just blueray or hd dvd?:thumbsup:
     
  6. Jamie

    Jamie
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    Unless you're using the amp for switching, to save cables to the TV or not enough inputs on the TV then a co-ax or optical cable would be just as good for the DVD player.
     

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