Hi, I need USB sound card chip for my DIY OpenWrt Internet radio player.
I want to make own PCB. I need 3.5 Jack for headphone, S/PDIF (no optical Toslink, only S/PDIF cinch) and microphone input (LIRC).
On eBay there are a lot of $1 USB sound cards based on C-Media CM108 chip.
There are two cheap chips from c-media: CM108 and CM119. What is the difference between them?
I found PCM2704 chip - PCB is extremelly simple!
I know that $1 sound chip can't provide great audio output, but what is better: PCM2704, CM108 or CM197?
Thank you for your help!
Discussion about my Wifi Radio project at http://mightyohm.com/wifiradio/ or my WL-520gU talk at NOTACON.
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