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01-03-2013, 11:05 AM | #1 |
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iPod5 vs iPod4 for E92 direct USB connect question:
My old iPod just died and I'm going to get a replacement. I know my iPhone5 plugged in through the USB/Lighting cable sounds worse vs the older iPod(assuming due to the DACs between the two). Is it safe to assume the new iPods will have the same degregation in sound? Also is there anything folks are doing to help this on the car side? other than BTAudio? TIA for any feedback.
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Sold - '13 E92 M3 - SG/FR ZCP 6sp with sunroof *and* wood (old fart edition). MPE. Turner 10mm spacers x4.
Born on July 4th, 2012, PCD September 5th, 2012. |
01-04-2013, 08:24 PM | #2 | |
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There shouldn't be any audible difference between any type of device connected with USB, assuming the same audio file on each device (different generations if iPads, iPhones, Windows phones, Android phones, USB sticks, etc.) The only way you could get an audible difference over USB is by delivering inferior data, e.g. recompressing the data. Recompression does happen over Bluetooth A2DP for bandwidth reasons, but shouldn't happen over USB, and shouldn't be different between iPhone 4 & 5. I don't want to tell you that you aren't hearing a difference, but consider that it may be power of suggestion -- you've read of audible differences on the forums, and it's true that everyone using a Y-cable will hear a difference because with the Y-cable the DAC in the device is used instead of the DAC in the car (with the iPhone 5 the DAC is actually some cheap tiny chip embedded in the Lightning-to-30-pin adapter plug). WS |
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01-04-2013, 11:04 PM | #3 | |
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Welp, theres an audiable difference between the two.
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I agree that if the BMW DAC is doing the conversion there should be no difference but its there FWIW. Just ordered an older 4gen iPod to replace the dead one with Citibank points. Placebo saved me ~$100 I guess.
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Sold - '13 E92 M3 - SG/FR ZCP 6sp with sunroof *and* wood (old fart edition). MPE. Turner 10mm spacers x4.
Born on July 4th, 2012, PCD September 5th, 2012. |
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