I have an Arcam rBlink recieving Bluetooth audio from phones (although my Samsung phone supports better quality audio than my iPhone due to a lack of Apt-x support). Although this unit is a DAC itself I bypass that and get the rBlink to send digital audio to an Audiolab M-DAC (via coax). The M-DAC also has another coax, USB and two optical inputs which I use for direct connection to a computer and games consols. In my case the M-DAC then acts as a pre-amp, connected to a power amp, but it will just as easily connect to an integrated amp or headphones (pluged straight into the M-DAC).
It sounds like what you are asking for is very different to that, but the Arcam rBlink could be of use to you.