A minidisc does not need to have been recorded on a RH1 in order to transfer via USB to a PC using Sony Sonic Stage. I have transfered from many minidiscs in this way recorded on my old MZ-R90, and saved to Wav files.

The great thing about the RH! is that you can switch on record and alter the record level on the fly. In addition Hi SP will give you over 7 hours recording on a 1gb data disc, which can be saved to Wav and my ears cannot tell the difference between that format and PCM.