Theorectically speaking wouldnt a phone with lineout + dac and amp be much better compared to the tiny enclosed dap dac/amp combo?
Its like a proper dedicated one whereas in the dap it seems like a compromise solution
This is only a niche problem we are facing because mp3 players as we know it are essentially dead so i think iriver is pricing their "audiophile" daps so expensive to milk this niche market because they cant cover the old mp3 player market
I dont think the chip inside or the housing or firmware for any dap seems modern enough to be included in a phone or should it command a price double that of flagship phones like the iphone or note4
Actually I disagree with you here although it may be just because I'm misunderstand you.
Comparing a smartphone lineout to DAC/Amp against a DAP lineout to DAC/Amp, I will still say the smartphone is a compromise solution because even an audiophile will use the smartphone for other functions, such as surfing net, navigation, call and texting etc.
What most audiophiles (or at least me) are trying to aim for is to look for a DAP that is good enough for us to avoid carrying around a stack, be it a smartphone + DAC/Amp, or DAP + DAC/Amp. Of course, some people will prefer to carry a stack because of their own reasons (cost, can't find the DAP that they want etc).
Iriver, as well as many other DAP manufacturers, are pricing their DAPs so high is simply because they are much better music players than smartphones. They can play more formats (FLAC, ALAC, DSD etc), they have much better DAC chips, and amp designs, and most of them will sound much better than the headphone out from MOST smartphones.
At the end of the day, we audiophiles will have to weight the high cost of such DAPs against its convenience. Some will prefer to pay more to play their DSD files, some will prefer to pay less and instead carry around their stacks etc... it all boils down to individual needs and preferences.