direcow
100+ Head-Fier
- Joined
- Oct 25, 2007
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Right, I'm guessing all this should be pretty straightforward, I've read a few threads and I've come to my own conclusions, but I've still been having this debate with a retailer. I'm not naming him because I don't want his name to be dirtied in any way, but I'll put mine (fwiw) on the line.
Basically he maintains that
Quote:
I'm not sure how the classic works, I read the thread
Quote:
which does indicate a very clean path...
at the same time,
Ken has stated so here:
Quote:
And Vinnie here:
Quote:
So I'm guessing it's the split power supply in the 6/7G that helps prevent the dc offset from damaging equipment down the line?
Or is he right in saying capless is fine, as long as there's an amp in the path.
Like I mentioned, I think I know what the answer is (please use caps), but I'm hoping for something substantial that can help explain a "proper" position better.
Basically he maintains that
Quote:
Actually if you can find a thread which Vinnie posted in head-fi about his review on the 6 gen classic against the 5.5 gen, he did mention that there is no caps between the DAC and line out on the 6 gen classic therefore nothing to mod and we all know that imod is all about that. So if that is the case why doesn't the 6 or 7 gen need caps and the imod need? |
I'm not sure how the classic works, I read the thread
Quote:
There are also no caps, as this chip is fed a split power supply (+/- voltages), so I'm sure there is a push-pull output stage built into the chip. No measured bass roll-off issues under load. There are only a few tiny surface mount resistors/inductors in the signal path. |
which does indicate a very clean path...
at the same time,
Ken has stated so here:
Quote:
If you do not have these dc blocking capacitors in the signal path, your amplifier will be amplifying dc offset voltage, and you run the risk of damaging the dac in your iMod, your amplifier, and your headphones or speakers! Even if you are lucky and this does not damage your equipment, the music will not sound good because your headphone or speaker drivers will always be pushed in one direction due to the dc offset voltage. This also heats the voicecoil of the driver and makes your amplifier work harder. |
And Vinnie here:
Quote:
If you try to connect the iMod to the iTransport's analog outputs, you won't have the dc blocking caps in the path (since the iTransport's analog output is a pass-through from the line out dock of the iPod), so you'll have dc offset voltage on the output - this is no good and NOT recommended! |
So I'm guessing it's the split power supply in the 6/7G that helps prevent the dc offset from damaging equipment down the line?
Or is he right in saying capless is fine, as long as there's an amp in the path.
Like I mentioned, I think I know what the answer is (please use caps), but I'm hoping for something substantial that can help explain a "proper" position better.