What is the opinion of Reddit about the
Alesis LineLink | AudioLink Series Dual 1/4-inch-to-USB-Cable Analog-to-Digital Converter (16-bit / 44.1 kHz)?

Is this what you are looking for? http://www.amazon.com/Alesis-LineLink-AudioLink-4-inch-USB-Cable/dp/B001T9O5V6/ref=pd_sxp_grid_i_1_1

I use this. There is also another version with one guitar output. I’ve never had a problem with “bad audio” with it but a lot of that depends on the guitar/preamp you have.