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What is the output imedance of the 3.5mm audio jack in Sony Ericsson J108i (Cedar) ?

marantz777

I dont know the exact impedance, but i'm quite sure it is in the Kohm range and thus compatible with ANY headphones on the market (i tried with several, and didn't notice any small difference in audio volume). It's very unlikely that you can damage both the phone or the headphones connecting a 3.5mm standard audio jack. Also, i tried to connect the cedar to external pre-amp as a mp3 source, and it worked. Volume can be adjusted on cedar to avoid saturation, and pre-amp accept this source without problems. Hope this helps.

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Sam

This is not information I have, however this level of information can generally be sourced through the white papers for our products located here:

http://developer.sonyericsson.com/wportal/devworld/search-downloads/phonespecs?cc=gb&lc=en

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Tried the White Papers. Still that information is not there. Maybe I need to measure it myself. I need it because if it is greater than my headphone's impedance, I may damage my headphones (not the one with the phone). And the impedance is not mentioned anywhere. Whereas I could find Xperia's Impedance easily.

marantz777

I dont know the exact impedance, but i'm quite sure it is in the Kohm range and thus compatible with ANY headphones on the market (i tried with several, and didn't notice any small difference in audio volume). It's very unlikely that you can damage both the phone or the headphones connecting a 3.5mm standard audio jack. Also, i tried to connect the cedar to external pre-amp as a mp3 source, and it worked. Volume can be adjusted on cedar to avoid saturation, and pre-amp accept this source without problems. Hope this helps.