AES48 , is there a test to determine?


I just got a Benchmark HPA4 preamp that I know adheres to the AES48 standard. It sits between my Schiit Yiggy dac and PS Audio M700 mono amps. All 3 components have XLR connections, but without contacting the companies, is there some type of easy test to find out if the other two are AES48?
koestner
@yyzsantabarbara, does the benchmark conform to the AES48 standard in their design application, or does the unit merely support an AES48 input signal ?  Kinda like when a manufacture says that their unit supports xlr inputs, but they are merely single ended connection. 
@testpilot  You should email the designer of the BM gear.  I won't do that since I already bugged him with a few emails on compatibility of the AHB2 with my Thiel CS3.7's.

John Siau - JSiau@benchmarkmedia.com - designer

Rory@benchmarkmedia.com - is the email of the Sales guy.