USB "A" and "B" to RCA adapter

I'm seeking adapters to convert standard USB cables to RCA interconnect cables to obtain a more thorough burn-in via normal Line Level inputs/outputs vs the low output of a PC software player to better exhibit our YBA DAC modules in preamp/DAC products.

USB "A" to RCA
USB "B" to RCA

Any suggestions will be most appreciated....thanks, y'all!

Jim Ricketts/tmh audio