Audio Jack 2.5 mm

Ian Stirling openmoko at
Tue Apr 24 21:32:43 CEST 2007

polz wrote:
> On Tuesday 24 April 2007 20:20:38 Ian Stirling wrote:
>> Jeff Andros wrote:
>>> On 4/24/07, *Flemming Richter Mikkelsen* <quatrox at
>>> <mailto:quatrox at>> wrote:
>>>     In reply to my own mail:
>>>     I have a motorola that has only one connector: the usb.
>>>     It works great for hands free. I don't know if this is supported by
>>>     the neo1973 hardware but if it is, this could be
>>>     the solution.
> Multiplexing the USB and audio would eliminate any chance of using both the 
> headphones and an unpowered USB addon at the same time, severely limiting the 
> hackability (is that even a word ?) of the phone.
>> The USB chip is integrated into the SOC, the sound chip is on another
>> bus. You can get arbitrary sound quality over USB, with a USB DAC.
> Don't these cost (an order of magnitude) more than simple headphones + an 
> adapter ?

Oh - I see what you mean.
Actually, no, they are not very expensive - $10 or so. There are much 
more expensive ones at $100+.
The $10 ones are adequate for 99.9% of users I'd guess.

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