[Gta04-owner] headphone sound quality on gta04

Jorge Costa jorge.costa.mail at gmail.com
Thu Feb 16 16:32:50 CET 2012

I found this old email, although I'm not sure if that second statement
means that the nokia adapters that worked with gta02 now stopped working
with the gta04.

From: Timo Jyrinki <timo.jyrinki at gmail.com>
To: List for communicating with real GTA04 owners
<gta04-owner at goldelico.com>
Date: Mon, 30 May 2011 16:08:56 +0300
Subject: Re: [Gta04-owner] 3.5mm instead of 2.5mm headphone jack?

2011/5/30 Dr. H. Nikolaus Schaller <hns at goldelico.com>:
*> But we found that e.g. Nokia has a 2.5 mm -> 3.5 mm adapter
> (4 wire) for just a handful EUR. Part number: Nokia Audio Adapter AD-52
> What we also have done is to optimize the pin assignment so that
> the 4 pins are compatible to more headsets and AV cables.
So you are rearranging them to the Nokia layout? It will be good to
document this well to avoid confusion.

2011/5/30 Jorge Costa <jorge.costa.mail at gmail.com>:
> One of the things that pissed me off the most with my previous mobile
> phones was the 2.5mm headphone socket, that 'feature' alone has always
> prevented me from using the phone as my main mp3 player.

GTA02 used Motorola compatible layout, so I bought three MP35A
2.5mm->3.5mm converters as documented at
http://wiki.openmoko.org/wiki/Headset - so 1 for my main portable
headphones, 1 for car and 1 for portable speakers. This way I don't
have to do any extra plugging when using FreeRunner as my main ogg
player :)

The Nokia layout is probably more universal.

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Gta04-owner at goldelico.com

On 14/02/12 22:29, Flemming Richter Mikkelsen wrote:
> dx.com <http://dx.com> sells adapters from 2.5 to 3.5.
> I hope to have time to test it this weekend.
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> Gta04-owner mailing list
> Gta04-owner at goldelico.com
> http://lists.goldelico.com/mailman/listinfo/gta04-owner
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