[SowonAoD]

In your opinion, which one is the better?
And how to connect the H100 to an amp? (I dont know much about this)
Please help me out.

 

[Currawong]

The optical output of the H100 is a digital output which requires a DAC with an optical input. The line out of an iPod is analog (imagine the headphone out but without any volume control). Only a couple of devices can get a digital signal out of an iPod, so you would normally be looking at a regular amp of some description. It might help if you tell us more about how you wish to use either, eg: at home or portably.

 

[SowonAoD]

Ah ok, i understood. I just saw a h100 at a local store. Can you belive that? It gathered dust there for almost 6 years and still works well now. I'm going to buy this but i know nothing about this old dap. May be i should replace the battery and the hard disk by a cf card.
At the moment, i just want a portable rig, and a home rig later (may be 3 or 4 years later). Can you suggest me any amp beside ibasso d10 and d12?

 

[gloco]

And rockbox the iriver.  You can turn on/off the optical out through the menu in rockbox (I'm assuming its the same thing with the iriver firmware), I think its found in the general/playback menu and you'll find the optical output option towards the bottom of the list.  It's a nice player/recorder.  I've used my H180 to record concerts as well as a mp3 player.  Works like a champ. 

 

[SowonAoD]

Thanks for your help. Btw, do you know the DB in general setting? Can you explain it for me?