USB Sound Card: dual stereo output?
I recently bought a Channel Audio Sound Card Adapter which would channel sound through my computer's USB port. Pretty standard it would allow for Stereo headphone out and microphone input:
I opted for it so I could control from my menu bar where the sound was being directed: http://www.cnet.com/uk/how-to/how-to-quickly-change-audio-output-in-os-x/
However I do not need the microphone in, but do need a second stereo headphone out and would like to know if:
a) A USB adapter exists that will encompass two stereo headphone ports, not a microphone?
b) Whether OS X will be able to distinguish the two so I can control which headphones are in use at any one time from a single USB Sound Card dongle? (note: I am not looking for a Y splitter)
I have read of some OS X software called "SoundSource" from RogueAmoeba, but this has been retired - it would allow for me to flip the microphone port so it would transmit sound, even through the microphone socket, I might have been able to get around it like that? Is there anything else that may be available that could do the job?
Also, I was wondering, if I had to get another USB Sound Card, could I use a USB splitter so that I could plug two USB spun cards into one port and with no loss of quality? USB ports are a premium on my computer.
e.g.
