Volks AutosJMB Retrofits
Page 1 of 2 12 LastLast
Results 1 to 40 of 46
Like Tree10Likes

Thread: Best audio quality - which input?

  1. #1
    1st Gear

    Status
    Offline
    Join Date
    Dec 2013
    Posts
    288

    Best audio quality - which input?

    So, which would be the best input to use for sound quality? SD? Bluetooth? AMI?

    I know it depends on the quality of the source, but I'm not sure if the MMI uses the same DAC for all of input sources?

  2. # ADS
    ADS
    Join Date
    Always
    Posts
    Many
     
  3. #2
    Neutral

    Status
    Offline
    Join Date
    Jan 2014
    Location
    Buckinghamshire
    Posts
    80
    The best would be to use CD's.
    Audi A3 SportBack S-Line 1.4 COD, Phantom Black, Comfort Pack, Parking Plus, Transformer Door Mirrors, Technology Pack, Bang & Olufsen

  4. #3
    0B1001001's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Sep 2013
    Posts
    186
    Pretty sure it supports FLAC, so FLAC on SD card would be best (with embedded album art at 800x800). Not got my car yet but think that's what I'll be using.
    Arrived: MY14 S3 Sportback (Ordered 4th Jan, build week 12 (was 13), collected 23rd April), Manual, Monsoon Grey, Black Alcantara, LED Headlights, Interior Light Pack, Comfort Pack, Audi Sound System, ACC, Parking System Plus, Tech Pack, Electronic Folding & Heated Mirrors, Through Load

  5. #4
    2nd Gear

    Status
    Online
    Join Date
    Oct 2013
    Posts
    411
    It will use the same DAC.

    Even if there was a difference, assuming the same source material (i.e. exactly the same file) it isn't going to make a blind bit of difference which input is used as any subtle nuances which might be better are going to be completely masked by any road noise (and I speak as an audiophile who has spent as much as a new A3 on audio equipment over the years).

    The best source file will be either direct from CD or FLAC files (I think the MMI plays FLAC files) as these are lossless formats. You aren't likely to be able to tell much difference between that and well compressed mp3s in a car though IMHO - due to the general environmental noise as mentioned above.
    warren_S5 and ConS3 like this.

  6. #5
    Neutral

    Status
    Offline
    Join Date
    Sep 2013
    Location
    Denmark
    Posts
    53
    AAC 320kbps from SD has an advantage of being immune to read errors - plus, you may hit the road with 1000 CD´s on a 128Gb card. That´s what I chose. I am an audiophile also, and I myself struggle to distinguish 320kbps from CD after two beers.

    edit: MMI can´t read files in FLAC or Apple lossless according to the manual, that states 320kbps as the upper limit, but I havent´t tested it.
    Ecosphere and ConS3 like this.

  7. #6
    Neutral

    Status
    Offline
    Join Date
    Sep 2013
    Location
    Denmark
    Posts
    53
    OT on: I cannot figure how to put my car´s details at the bottom of my posts like OB1001001! OT off

  8. #7
    0B1001001's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Sep 2013
    Posts
    186
    Quote Originally Posted by felsby View Post
    OT on: I cannot figure how to put my car´s details at the bottom of my posts like OB1001001! OT off
    Settings at top, Edit Signature on left
    felsby likes this.
    Arrived: MY14 S3 Sportback (Ordered 4th Jan, build week 12 (was 13), collected 23rd April), Manual, Monsoon Grey, Black Alcantara, LED Headlights, Interior Light Pack, Comfort Pack, Audi Sound System, ACC, Parking System Plus, Tech Pack, Electronic Folding & Heated Mirrors, Through Load

  9. #8
    2nd Gear

    Status
    Online
    Join Date
    Oct 2013
    Posts
    411
    Quote Originally Posted by felsby View Post
    edit: MMI can´t read files in FLAC or Apple lossless according to the manual
    Apparently the tech. pack addon can according to posts on the forum......

  10. #9
    0B1001001's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Sep 2013
    Posts
    186
    If you want to save space vs. FLAC, I'd go for 320kbps VBR MP3.
    felsby likes this.
    Arrived: MY14 S3 Sportback (Ordered 4th Jan, build week 12 (was 13), collected 23rd April), Manual, Monsoon Grey, Black Alcantara, LED Headlights, Interior Light Pack, Comfort Pack, Audi Sound System, ACC, Parking System Plus, Tech Pack, Electronic Folding & Heated Mirrors, Through Load

  11. #10
    RossR's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Apr 2013
    Posts
    490
    I've got tech pack with connect and can play FLAC at 48KHz, 16bit. I've not tried higher bit depth or sample rate, although I did successfully play a DVD with 96KHz, 24bit PCM audio. I doubt the DAC is anywhere near that quality, but it did play.

  12. #11
    oaf
    Reverse Gear

    Status
    Offline
    Join Date
    Mar 2014
    Location
    Nottingham
    Posts
    1

    Thumbs up

    Quote Originally Posted by felsby View Post
    AAC 320kbps from SD has an advantage of being immune to read errors ...
    edit: MMI can´t read files in FLAC or Apple lossless according to the manual, that states 320kbps as the upper limit, but I havent´t tested it.
    First post(!)

    I tried to find on the web the maximum supported AAC bitrate and couldn't; however my car is happily playing ("True") [T]VBR Apple-encoded AAC files at the highest quality setting. Foobar2000 reports that the bitrate of these files often peaks (quite some way) over 320kbps but I haven't encountered any stutters yet, they all play fine. I've got a new S3 with B&O stereo but no tech pack.

    I used https://sites.google.com/site/qaacpage/ in conjunction with foobar2000 to transcode my FLAC files to AAC. This means I can use (the good) Apple encoder without installing the (not so good!) iTunes and have the flexibility of Foobar too. Killer samples aside I'd defy anyone to ABX the FLAC/AAC files (and that's before the car has started!)

    Hope this helps someone.
    felsby likes this.

  13. #12
    1st Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    205
    Slightly off-topic but I tried a cd for first time in my week old car (been using Bluetooth...) and there is no track data showing on the MMI... What's wrong?

  14. #13
    snakehips's Avatar
    3rd Gear

    Status
    Online
    Join Date
    Aug 2013
    Location
    North Herts
    Posts
    604
    Quote Originally Posted by 0B1001001 View Post
    If you want to save space vs. FLAC, I'd go for 320kbps VBR MP3.
    Agreed. I have used both formats and really can't tell the difference in the car, but maybe this is because I'm running on Continentals...
    madrussa likes this.
    A3 SB S-Line TDi 184PS Quattro S-tronic. Shiraz Red, Tech Pack, Comfort Pack, B&O, Sunroof, LED lights, lots of other stuff.

  15. #14
    1st Gear

    Status
    Offline
    Join Date
    Aug 2013
    Posts
    221
    Quote Originally Posted by PembsA3 View Post
    Slightly off-topic but I tried a cd for first time in my week old car (been using Bluetooth...) and there is no track data showing on the MMI... What's wrong?
    Yeah I have noticed this. It only shows cd track 1 only

  16. #15
    Neutral

    Status
    Offline
    Join Date
    Sep 2013
    Location
    Denmark
    Posts
    53
    mine shows all tracks. Standard MMI (w/o HDD, touch)
    A3 Sportback 180bhp S-tronic
    Amalfi white, Chestnut brown interior. Xenon, heated and retractable mirrors, sat nav, Audi Sound System, LED interior lights, detachable tow bar.

  17. #16
    5th Gear

    Status
    Offline
    Join Date
    Oct 2013
    Location
    Near Melton Mowbray
    Posts
    1,097
    Quote Originally Posted by snakehips View Post
    Agreed. I have used both formats and really can't tell the difference in the car, but maybe this is because I'm running on Continentals...
    Build Week 1: Panther Black S3 SB S-Tronic, black nappa, anthracite alloys, comfort pack with adaptive cruise and parking plus, active lane assist, adaptive xenons with variable range control and auto high beam, technology package HIGH with connect, B&O, tyre pressure warning, fold/dim/dip/heat mirrors, reversible boot liner, extended mono pur interior, privacy glass, hill hold assist, LED interior light pack, electric lumber support.

  18. #17
    Neutral

    Status
    Offline
    Join Date
    Sep 2013
    Location
    Denmark
    Posts
    53
    Probably :-)
    But seriously, 320kbps for in-car audio is really good enough.
    A3 Sportback 180bhp S-tronic
    Amalfi white, Chestnut brown interior. Xenon, heated and retractable mirrors, sat nav, Audi Sound System, LED interior lights, detachable tow bar.

  19. #18
    JohnnyM100's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Jan 2013
    Location
    Hampshire/Surrey border
    Posts
    461
    Quote Originally Posted by felsby View Post
    mine shows all tracks. Standard MMI (w/o HDD, touch)
    +1

    only tried recent CDs though. Perhaps older ones or burned CDs don't have CD-Text

    John.
    Enjoying my 8V

  20. #19
    0B1001001's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Sep 2013
    Posts
    186
    All this talk of actual, real CD's is just so 80's
    illingworth22 and felsby like this.
    Arrived: MY14 S3 Sportback (Ordered 4th Jan, build week 12 (was 13), collected 23rd April), Manual, Monsoon Grey, Black Alcantara, LED Headlights, Interior Light Pack, Comfort Pack, Audi Sound System, ACC, Parking System Plus, Tech Pack, Electronic Folding & Heated Mirrors, Through Load

  21. #20
    Neutral

    Status
    Offline
    Join Date
    Dec 2013
    Location
    A big, ugly and polluted south-Europe city
    Posts
    87
    24 bit >48 KHz DACs are expensive stuff. I doubt that they fit a high-res high-sr DAC in a small family car. Maybe on bigger models. I think if you try to play hi-res material it is resampled before the DAC.

    I could be wrong obviously.

  22. #21
    1st Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    205
    Brand new original recording cd - no track info - just "Track 1" "Track 2" etc... Surely that's not right with all this talk of people seeing videos and album covers via their MMI...

  23. #22
    1st Gear

    Status
    Offline
    Join Date
    Aug 2013
    Posts
    221
    Quote Originally Posted by PembsA3 View Post
    Brand new original recording cd - no track info - just "Track 1" "Track 2" etc... Surely that's not right with all this talk of people seeing videos and album covers via their MMI...
    Yeah I'm confused. I've tried loads of CDs and none of them show the track names?

  24. #23
    illingworth22's Avatar
    1st Gear

    Status
    Online
    Join Date
    Feb 2013
    Location
    Dublin, Ireland
    Posts
    124
    Slightly off topic.... only just! I have all my music on my iPhone 5S and play via Bluetooth. How come some of the Album Art is displayed and other artwork is not? (Generic Artwork is displayed)
    My14 S3 3 Door (Audi Ireland Press Car) in Masano Red

    Options - Misano Red - MMI Navigation Plus (no DAB as it is not available here) - Audi Connect - Fine Nappa - Heated Seats - Heated Seats - Metallic Paint - 18" 5 Parallel Spoke Star Design Alloy Wheels - Bang & Olufsen Sound System

    Standard - Bluetooth
    - Drive Select - Music Interface - Presence Basic - Auto Headlight Range Adj - Exterior Chrome - Rear Park Assist - Xenon Lights with LED daytime running lights

  25. #24
    JohnnyM100's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Jan 2013
    Location
    Hampshire/Surrey border
    Posts
    461
    Quote Originally Posted by RVP20 View Post
    Yeah I'm confused. I've tried loads of CDs and none of them show the track names?
    What's your firmware version? See last few posts in this thread.

    What do we know about the MMI in the A3?
    Enjoying my 8V

  26. #25
    1st Gear

    Status
    Offline
    Join Date
    Jan 2014
    Location
    Witney, Oxford
    Posts
    238

    My Social Networking

    Follow oufc1976 On Twitter
    Quote Originally Posted by RVP20:2119827
    Quote Originally Posted by PembsA3 View Post
    Brand new original recording cd - no track info - just "Track 1" "Track 2" etc... Surely that's not right with all this talk of people seeing videos and album covers via their MMI...
    Yeah I'm confused. I've tried loads of CDs and none of them show the track names?
    Ditto that.

    Did some tests today. Compared Eminem's Without Me in lossless, MP3 and AAC (via iPod and SD)

    And whatever others may say, for me there is a massive difference between lossless and the compressed formats.

    As such, it's iPod all the way for me.

    Played a CD and was surprisingly underwhelmed although it wasn't the same track to be fair.

    Makes me think Audi scrimped on the CD transport
    8V A3 Saloon 2.0 TDi S-Line. Daytona Grey. SD Sat Nav. Privacy Glass.

  27. #26
    2nd Gear

    Status
    Online
    Join Date
    Oct 2013
    Posts
    411
    Quote Originally Posted by oufc1976 View Post
    for me there is a massive difference between lossless and the compressed formats.
    It does depend on what bitrate though.... 320k CBR or 192k VBR (mp3) are very difficult to tell apart from original - even on quite high end gear....

  28. #27
    1st Gear

    Status
    Offline
    Join Date
    Jan 2014
    Location
    Witney, Oxford
    Posts
    238

    My Social Networking

    Follow oufc1976 On Twitter
    Both AAC and MP3 files were 320kbs

    The difference was most noticable in the low end frequencies.

    It's clear as day to my ears. But I accept its different for different people
    8V A3 Saloon 2.0 TDi S-Line. Daytona Grey. SD Sat Nav. Privacy Glass.

  29. #28
    2nd Gear

    Status
    Online
    Join Date
    Oct 2013
    Posts
    411
    Quote Originally Posted by oufc1976 View Post
    It's clear as day to my ears. But I accept its different for different people
    I would challenge you to a double blind test... but my anorak days are behind me.....

  30. #29
    1st Gear

    Status
    Offline
    Join Date
    Aug 2013
    Posts
    221
    Thinking of loading a 128gb SD card. What type of file should I put on it? ACC? Is this the best sound quality?

  31. #30
    0B1001001's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Sep 2013
    Posts
    186
    Quote Originally Posted by illingworth22 View Post
    Slightly off topic.... only just! I have all my music on my iPhone 5S and play via Bluetooth. How come some of the Album Art is displayed and other artwork is not? (Generic Artwork is displayed)
    Embedded image size greater than 800x800 pixels? I believe this is the limit.
    Arrived: MY14 S3 Sportback (Ordered 4th Jan, build week 12 (was 13), collected 23rd April), Manual, Monsoon Grey, Black Alcantara, LED Headlights, Interior Light Pack, Comfort Pack, Audi Sound System, ACC, Parking System Plus, Tech Pack, Electronic Folding & Heated Mirrors, Through Load

  32. #31
    Neutral

    Status
    Offline
    Join Date
    Sep 2013
    Location
    Denmark
    Posts
    53
    Rvp20: yes, AAC 320 kbps was my choice.
    A3 Sportback 180bhp S-tronic
    Amalfi white, Chestnut brown interior. Xenon, heated and retractable mirrors, sat nav, Audi Sound System, LED interior lights, detachable tow bar.

  33. #32
    1st Gear

    Status
    Offline
    Join Date
    Jan 2014
    Location
    Witney, Oxford
    Posts
    238

    My Social Networking

    Follow oufc1976 On Twitter
    Lossless every day.

    AAC/MP3s sound thin. And even the CD player, which in principle should be the best, sounds flat.
    8V A3 Saloon 2.0 TDi S-Line. Daytona Grey. SD Sat Nav. Privacy Glass.

  34. #33
    1st Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    205
    No matter how I organise the music files on the SD card, (e.g. by album...) the MMI always displays the files in track number order i.e. all the first tracks on all the albums first... Can't find any way of changing how they are sorted via MMI... Help anyone?..

  35. #34
    1st Gear

    Status
    Offline
    Join Date
    Jan 2014
    Location
    Witney, Oxford
    Posts
    238

    My Social Networking

    Follow oufc1976 On Twitter
    Quote Originally Posted by PembsA3:2139955
    No matter how I organise the music files on the SD card, (e.g. by album...) the MMI always displays the files in track number order i.e. all the first tracks on all the albums first... Can't find any way of changing how they are sorted via MMI... Help anyone?..
    Similar question. How do you shuffle 'all' songs?
    8V A3 Saloon 2.0 TDi S-Line. Daytona Grey. SD Sat Nav. Privacy Glass.

  36. #35
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,225
    For the first one, I use the 'folder' view in the MMI media menu, just lets you browse by folder.

    For shuffle, it's just in the options for me. Load the whole SD card to the playlist and then put shuffle on.
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

  37. #36
    1st Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    205
    I don't have any 'folders' showing on the MMI - below 'SD Card' level I have all the tracks listed... Should I have put each album in a different folder on the computer when I ripped the CDs?..

  38. #37
    andy203's Avatar
    181 BHP

    Status
    Offline
    Join Date
    Jan 2014
    Location
    Norfolk
    Posts
    274
    Quote Originally Posted by PembsA3 View Post
    I don't have any 'folders' showing on the MMI - below 'SD Card' level I have all the tracks listed... Should I have put each album in a different folder on the computer when I ripped the CDs?..
    I just copied and pasted the individual albums from PC to SD card, and they appear in the MMI in alphabetical order.
    Proud Owner - A3 Sportback 2 lt Quattro - S Line - Daytona Grey

  39. #38
    Neutral

    Status
    Offline
    Join Date
    Sep 2013
    Location
    Denmark
    Posts
    53
    Quote Originally Posted by oufc1976 View Post
    Lossless every day.

    AAC/MP3s sound thin. And even the CD player, which in principle should be the best, sounds flat.
    Seems like you have to blame the DAC, then.
    A3 Sportback 180bhp S-tronic
    Amalfi white, Chestnut brown interior. Xenon, heated and retractable mirrors, sat nav, Audi Sound System, LED interior lights, detachable tow bar.

  40. #39
    Neutral

    Status
    Offline
    Join Date
    Sep 2013
    Location
    Denmark
    Posts
    53
    Quote Originally Posted by PembsA3 View Post
    I don't have any 'folders' showing on the MMI - below 'SD Card' level I have all the tracks listed... Should I have put each album in a different folder on the computer when I ripped the CDs?..
    Which program did you use to rip them?

    Yes, it would be a good idea to organise tracks in folders. The MMI cannot sort them for you.
    A3 Sportback 180bhp S-tronic
    Amalfi white, Chestnut brown interior. Xenon, heated and retractable mirrors, sat nav, Audi Sound System, LED interior lights, detachable tow bar.

  41. #40
    andy203's Avatar
    181 BHP

    Status
    Offline
    Join Date
    Jan 2014
    Location
    Norfolk
    Posts
    274
    Quote Originally Posted by felsby View Post
    Which program did you use to rip them?

    Yes, it would be a good idea to organise tracks in folders. The MMI cannot sort them for you.
    I used Windows media to rip them.
    Proud Owner - A3 Sportback 2 lt Quattro - S Line - Daytona Grey

 

 
Page 1 of 2 12 LastLast

Similar Threads

  1. MMI 3G+ Best Sound Quality Files?
    By Ger7 in forum In-Car Entertainment
    Replies: 2
    Last Post: 19th October 2013, 07:18
  2. best audi headunit. Which do i pick?
    By chale989 in forum A3/S3/Sportback (8P Chassis)
    Replies: 9
    Last Post: 3rd February 2013, 19:31
  3. New HU or Aux Input Adaptor - which is best option
    By Nanz in forum A3/S3/Sportback (8P Chassis)
    Replies: 17
    Last Post: 9th July 2012, 21:34
  4. A4 TDi 110 OR PD 115 Which is Best?
    By 18ME in forum A4/S4 forum(B5 Chassis)
    Replies: 0
    Last Post: 14th January 2003, 00:44

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO