In Europe we have got two models of this Hi-MD: 1. NH600 with AC/DC adapter inptut, line/optical input (analog/digital 2in1), and a 4-pin (?)remote port. I've got this device in my pocket:) 2. NH600D without AC, line/opti and remote inputs However in Poland, where I live NH600D i sold as NH600.. (I bought mine in the UK).. pretty funny, isn't it?