credits and source
Most credit goes to Jon from the headfi forums and to the people in this thread.
theory
The idea in this mod is to simplify the analog output path by bypassing the amp and directly connecting the DAC to an external amp after protecting the amp behind a capacitor. There are several output options for connecting the DAC to an external amp:
- Drill a hole on the side of the iPod and route the wires through this hole to capacitors and then to an amp. The advantage of this method is that it allows the iPod to be charged through the dock while playing. The disadvantage is that obviously you have to mar your perfect shiny iPod (if you don’t do it while opening it).
- Connect the DAC to the dock connections on the PCB such that you can use the line out as a way of connecting to the external amp. The advantage is that when the iPod is closed it looks like a normal iPod. The disadvantage of this method is that there is not a good way of charging and playing the iPod without building a custom dock connector that can connect to a USB port as well as to the external amp.
warnings and limitations
This mod is not for everyone. There are a few requirements and limitations to this mod. You must have some soldering experience, and you must have an external amp or external speakers. This mod will also not allow you to use your headphones through the headphone jack. Finally you must find a location for the capacitors. Some generations (2nd, 3rd, and 4th) of the iPod will actually have enough space to fit two small capacitors within the iPod housing with some creativity. Other generations (fifth) will definitely not have enough space to fit the capacitors (even the just the wires may make it difficult to put the iPod back together back to its perfect unopened form).
Obligatory disclaimer: As usual I nor any of the above credited authors take no responsibility for any damage or irreparable harm to your iPod.
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