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a4 b8 audi concert sd card

r15wne Aug 30, 2015

  1. r15wne

    r15wne Member

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    im wanting to purchase a SD card for the concert radio,
    ive tested a few that fit into some mobiles, tablets the micro sd cards and put them in to a holder, but non of them read by the concert.
    can some one advise the max size gigs and the type of card that is needed..
    or a link would be great ..
    thx..
     
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  3. linners

    linners Member

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    I've just started using the SD card reader for mine..... fantastic! Saves faffing around with the AUX cable and an MP3 player and it's totally stealth (no cables for prying eyes to take any interest in)

    I bought a generic 128GB micro SD card with adapter (Class 10) from fleaBay for £7.99 and it works perfectly:

    http://www.ebay.co.uk/itm/128GB-CLA...CAMERAS-ETC-/181818442208?hash=item2a553941e0
     
    r15wne likes this.
  4. andyam

    andyam Active Member

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    All depends which year your car is I believe 2008/2009 only accept SD Cards ehich only go up to 4 Gb. Anything after will be SDHC up to 32gb
     
  5. Bristle Hound

    Bristle Hound Moderator Staff Member Moderator

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    My old April 2009 B8 A4 would take a non SDHC 8gb SD (Transcend) card with no probs

    TBH I wouldn't be using micro SD card's with the adaptor
     
  6. andyam

    andyam Active Member

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    They realised 8gb non SDHC? Thanks for letting me know!
     
  7. r15wne

    r15wne Member

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    ah well , already ordered one from the link provided..
    see what happens when it gets here....
     
  8. GeoffDunk

    GeoffDunk Well-Known Member

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    Can you access all 128GB @linners, or just 32GB of it?
     
  9. Bristle Hound

    Bristle Hound Moderator Staff Member Moderator

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    @r15wne - Edit : Just found my old SD card that I had in my B8 A4 & it is in fact a SDHC card (a Samsung 8gb class 6 card)
     
  10. linners

    linners Member

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    I haven't loaded the card up with 32GB worth of music yet - will dump a load of stuff on there to see if I can access more than that and get back to you....
     
  11. jdp1962

    jdp1962 Grumpy Old Man Gold Supporter

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  13. GeoffDunk

    GeoffDunk Well-Known Member

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    I just tried a larger than 32Gb card and it doen't recognise anything over the 32Gb, there is also a file limit but can;t remeber what it is, there is a also a path string limit (depth of folders).
     
  14. r15wne

    r15wne Member

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    i ordered the one in the link above seems to work on everything ...but the audi
    mine is b8 2008 may be thats why..
     
  15. Dtfrith

    Dtfrith Member

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    Is the sd card the best quality sound, I have the B&O and I'm looking to get the best out of it and I understand the iPhone output isn't great.
     
  16. linners

    linners Member

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    Guys
    Quick update re my cheapo fleaBay microSD card: don't do it :/ Invariably, an unbranded 128GB Class 10 for £7.99 will only last a few weeks before it f**ks up
    Problem first started when I tried to update my card and it wouldn't copy files over or had unreadable files on the card. Eventually, the head unit couldn't even read the card
    I've since bought myself a PNY 32GB Class 10 card (not micro SD) from PC World and had no probs with copying or reading files
    Dtfrith, sould quality will be dependant on the mp3/whatever format file. Problem with using iPod is that it is not a "quality" player. I have a FiiO X1 which sounds much better but it's still a faff - stick with the SD card :)
     
  17. skiptowncat

    skiptowncat Well-Known Member

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    In regards to sound quality, it is entirely dependant on what bitrate the songs you put on the card are.
     
  18. GeoffDunk

    GeoffDunk Well-Known Member

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    This is correct but this is only one element. With regards to those asking or frowning upon the sound quality of the iPhone or iPod, here is some further info:

    Firstly, they can both be improved with better ear or headphones, they are by no means the worse player on the market and they are not too bad at all, but I admit they are not the bet but most of us wouldn't notice.

    Secondly, when connecting via MMI, its line level and bypasses some of the circuitry used by headphones which helps with the sound quality so there will be some improvement.

    Thirdly, BT bypasses both the audio line level and the headphone built in amplification so again will be different and improved.

    With regard to bit rates, MP3's are not a "lostless" audio compression format so to keep the file size down the compression algorithm clips the top and bottom of the audio track plus other clever stuff, less voice and less bass essentially. To prevent this happening rip or down load your audio files at 320KBs or the highest you can get, this will minimise the "clipping" and keep the quality, this is the best for SD cards. The best format to use is Apple lostless when using Apple hardware which is the native format and gives full lostless copies. There is a down size, the higher the bit rate the larger the file.

    I am an audio enthusiast, I have over the years spent more on audio equipment for the home than I have on my current car, the audio within a car is flawed but I use some simple rules when using compressed audio, keep the bit rate high and/or use a lostless file type. I enjoy a pretty good sound in my RS with the B&O system, I spec'd B&O to get the best possible sound. I have a 160GB iPod which is full so I have a very good selection of Audio and the iPod and iPhone coupled with the B&O amplification works well. This would also sound different with Bose and basic Audi amplification.
     
  19. skiptowncat

    skiptowncat Well-Known Member

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    Pretty much what I would have put if I could have been ***** typing it all!!

    Just to add, my iPhone does have a bit of a hiss but I think that's to do with the 30 pin to lighting connection
     
    GeoffDunk likes this.
  20. linners

    linners Member

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    Agreed Geoff

    To add, all things being equal (bitrate, file format, etc), and using the headphone socket to connect to the MMI, my FiiO outperforms my 3rd Gen iPod noticeably in terms of sound quality and volume. I've got more of a choice of equalisation with the FiiO too. The Apple players have one massive advantage and that is storage capability. You can improve on the sound quality of the iPod by bypassing the headphone output and using an adaptor that plugs into the charging socket and a relatively cheap in-line amp for a marginally better quality but again, this is a faff

    The SD card uses nothing but the MMI techno bits so you've cut out the middle man and all your left with is your music to blame or marvel at :)
     
  21. GeoffDunk

    GeoffDunk Well-Known Member

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    I agree with your last bit @linners but the caveat to that is when using MP3's keep the bit rate high, what other file types can the Audi MMI read?

    If a low bit rate is used; most applications rip at 128kbps by default, then there will be a noticeable reduction on audio quality even though the MP3 experts say there shouldn;t be.

    The official word:
    "The compression works by reducing the accuracy of certain parts of a sound that are considered to be beyond the auditory resolution ability of most people. This method is commonly referred to as perceptual coding. It uses psychoacoustic models to discard or reduce precision of components less audible to human hearing, and then records the remaining information in an efficient manner."
     
    Hear-Vier likes this.
  22. linners

    linners Member

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    Agreed: higher bitrate is always better
    I've just had a look at the last SD card update I made from my music library and there are a couple of lossless files amongst there and I'm sure they play on my Concert - will confirm later
     
  23. Tolak

    Tolak Member

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    The concert will also play WMA files.
    Whilst I agree about the quality side of things, the compromises a car forces on your audio experience are much worse than the compression algorithms.
    So I use variable rate WMA, maximum bang per meg, and a file system that makes sense.
    And on my older Concert, I use a non-HC 4GB SD card (yes, I don't know how, but my HP PDA would not support SDHC, but did use this 4GB card ok too)
     
  24. Hear-Vier

    Hear-Vier B5 then a B8.5

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    Mine has symphony unit with B&O (but no mmi). When I first got the car I 'ripped' a few tunes to a decent 32GB SD card using the highest quality file format I could find but the same songs sounded fuller / better quality when played back from the CD. Couldn't find any lossless file formats the car would recognise.
     
  25. linners

    linners Member

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    Just checked and and my MMI plays WAV files
     
  26. Tolak

    Tolak Member

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    But are WAV files compressed at all?
    There is obviously the balance between best quality and maximum number of tracks/files that fit on the card.
    Again, it's not what others think, but what you test and are happy with.

    Takes a bit of effort to generate the test songs at different sample rates and formats, but should be a useful experiment. (Hmm, wonder if there's a market there?)
    After all, CD players used to be all about the DAC, sampling rates, etc; this decoding of the compressed music file (though probably becoming more standardised) is the equivalent at modern music levels. Get a good decoder, and the music is good; get a bad one, and the same file may be unacceptable to you.
     
  27. linners

    linners Member

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    WAV is not compressed so it "should" sound better than MP3
    (Can't say I notice between one of my 128kbps MP3's and a WAV file though....)

    The question was whether the MMI can read lossless file types as well as MP3
     
  28. Tolak

    Tolak Member

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    There are lossless compression algorithms (well, for pictures), but the audio algorithms are based on typical hearing capabilities, and then moderated further by the systems people use.
    iPhone with earphones would seem good, but actually the DAC is naff.
    Laptop DAC are equally bad, but even a cheap external DAC (10 quid) lifts the sound quality impressively. I even tried more expensive DACs, but the cheapie worked well, and at the price, was a bargain.
    So though the MMI and speakers (inc amp) are nice in the car, the background noise destroys most of that ambience.
    And purists would disable the DSP.

    Me? Too many years biking has taken my high frequency response down a bit, so I don't claim to be an absolute reference; hence the pragmatic approach to get to a standard that pleases you.
    Anon.
     
  29. linners

    linners Member

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    Ditto me re biking and hearing.... mild tinnitus means I have to turn the volume up a bit more :whistle2:
     

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