The threads on SD card readers & ultimate sound source, address the task of minimising electronic noise by using solid state storage & maximising audio fidelity. But these offerings while reportedly sounding very good are also weak in the area of the user interface.
So why not start with a unit that has a good interface & uses solid state & modify it for I2S out? The iPod/iPhone/iTouch is one such device & I'm sure there are many others. There is a site here devoted to modding the iPod The Collected diyMods - Jonathan P. Le
Has anybody here successfully taken I2S out of an iPod yet?
So why not start with a unit that has a good interface & uses solid state & modify it for I2S out? The iPod/iPhone/iTouch is one such device & I'm sure there are many others. There is a site here devoted to modding the iPod The Collected diyMods - Jonathan P. Le
Has anybody here successfully taken I2S out of an iPod yet?
Thanks! And if we find that high res WAVs can be played back using iPodLinux then this becomes very attractive - a high res portable audio player
. I can't find any info on the iPodlinux site about this (yet) but I have seen a post here Playing 24/96 files from iPod | Computer Audiophile that 24/96 is downsampled by RockBox OS on iPod.Just do a Google serach for iPodLinux (Podzilla is just the UI for iPodLinux) http://www.ehow.com/how_5561819_put-podzilla-ipod.html
It's confirmed that iPodLinux can record to the iPod at 96KHz (don't know about bit rate) so the hardware can support this samplerate - it's just a matter of whether the playback downsamples it?
iPod-Linux
SO a bonus I wasn't expecting - recording - don't know how good these would turn out (I'm not that interested in recording)
(Podzilla is just the UI for iPodLinux) http://www.ehow.com/how_5561819_put-podzilla-ipod.htmlIt's confirmed that iPodLinux can record to the iPod at 96KHz (don't know about bit rate) so the hardware can support this samplerate - it's just a matter of whether the playback downsamples it?
iPod-Linux
SO a bonus I wasn't expecting - recording - don't know how good these would turn out (I'm not that interested in recording)
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I also appears that playback of high res WAV files (16bit/88.2,96KHz) is supported but a bit buggy iPodLinux :: Recording - iPodLinux
Is this for certain?I ask because it's so simple of a solution why( until recently atleast) has Wadia been the only one to do so?
I'm surprised more people aren't interested in this or have experimented with it (there must be a lot of broken iPods out there?). Some have said that the weak link will be the jitter but I don't think anybody has measured the clock jitter of the iPod! I don't know how the audio clock is generated, does anybody?
Even though it may not be the last word in jitter specs, jitter is not the whole story in how audio sounds - I would cite the following as important elements of the proposed iPod config:
- operating from solid state storage (an exchangeable SD card after removing the hard disk)
- avoiding a noisy PC PS - of course this assumes the iPod PS is quiet which may not be the case
- ability to playback WAV files at 96KHz
Even though it may not be the last word in jitter specs, jitter is not the whole story in how audio sounds - I would cite the following as important elements of the proposed iPod config:
- operating from solid state storage (an exchangeable SD card after removing the hard disk)
- avoiding a noisy PC PS - of course this assumes the iPod PS is quiet which may not be the case
- ability to playback WAV files at 96KHz
Yep, I'm pretty sure it's PCM2706 - the reason Wadia has been the only one is because it requires an agreement with Apple (& royalty payments, I presume) & to supply an Apple ID chip which enables USB delivery to the Dock connector!
Can't find the link but it's discussed on the Headfi or Computeraudio forum
The USB output may not be a bad solution but it's not available to DIY by mere mortals like ourselves
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Ah thanks jk,its the licensing agreement with Apple thats the likely stumbling block.Yep, I'm pretty sure it's PCM2706 - the reason Wadia has been the only one is because it requires an agreement with Apple (& royalty payments, I presume) & to supply an Apple ID chip which enables USB delivery to the Dock connector!
Can't find the link but it's discussed on the Headfi or Computeraudio forum
The USB output may not be a bad solution but it's not available to DIY by mere mortals like ourselves
Most iPods die with the sad face rendering the entire iPod unusable, not able to undergo trials like this.
What hardware problem does the "sad face" indicate - internal HDD problem or some other issue?
HDD mostly
Sometimes it may be due to corrupted files, but that is easy to fix using software.
I would take a look at U.S. eBay and see if prices aren't a little more reasonable. A lot of U.S. sellers will ship overseas.. I've bought older working ones in the past for less than 100 euros.. FYI: Brand new 8GB Nanos directly from Apple are under 105 euros here..
FWIW I wouldn't expect anyone to sell you one for significantly less than the typical asking price on eBay unless you are fortunate enough to run into someone who has one and is interested in helping you out. You never know..
When you mention classic iPods do you mean the Classic 80GB/160GB or just older iPods in general? At those prices a new Nano might make more sense.
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