Call me a sad old cynic, but can I believe in "audiophile-grade amplifier" in something the size/cost of a phone? Most of us do not accept that the sound-card chip on a PC motherboard is good enough.
Portable devices can be good indeed --- but how good? Good enough for a quick listen, or good enough for long-term use. Plugging the headphones into my phone (it's a Defy+: I'm sure some other phones may have better sound) yields surprisingly good results, but not so good that I would use it instead of my ancient Cowon portable, and not so good that I would want to connect it up to my amplifier.
Future development may change all this, but I'm still cynical because mobile-phone development is always going to be aimed at the mass market --- and the mass market listens to highly-compressed MP3s.
Where my phone wins is that it is actually better than the fancy remote control of the Squeezebox Duet. It makes a better, easier to use remote control, and a perfectly fine Squeeze
player to take to bed with the earbuds. That works, of course, without
any Logitech hardware!
We need DIYers here!
My bet on tomorrow's non-Logitech "squeezebox" would be something like squeezeplug, running on Rasberry Pi, with wifi and a USB DAC.
Links ...
Links ...
Links
The phone or tablet fits in as the perfect remote control