I am considering Teralink X2 with 6x AA batteries against unmodified Hiface one (not two). \n \n http:\/\/www.ebay.com\/itm\/Teralink-X2-Native-24bit-96k-USB-to-SPDIF-I2S-Converter-\/251394290149?pt=US_Home_Audio_Amplifiers_Preamps&hash=item3a884471e5\n \n http:\/\/www.ebay.com\/itm\/M2Tech-hiFace-Hi-End-computer-USB-to-S-PDIF-RCA-digital-Output-Interface-\/131009908212?pt=LH_DefaultDomain_0&hash=item1e80cc8df4\n \n I don't want to modify Hiface. Which is better? Which is more recommended?\n \n Every time I see people talking about Hiface, are they actually referring to this small USB plug? or referring to an older version of Hiface?