There are some different views on this unit(read Gearslutz..) about it being compared to the software. I was prepared to send the unit back if it would not make any difference to the software, and while being A/B tested HW vs SW I heard slight differences. The HW won me over this time, and I am keeping it. The small differences were such that it would put the vocals in place in a way that the SW algos sometimes lacked. Most people might not hear any difference at all, but I heard it in the mix(playing with vocals on karaoke songs etc..) Can't say why there is this small difference, and I have not yet tried to run the clock from my Prism Orpheus into the PCM(which might make a bigger improvement even..) I use it as a send effect into Cubase on PC. Only let down is that there is no control software for the unit for PC..? (Only Mac) WTF.. They only had like forever to get it done.. But used as HW, not something that was available before on older reverb units either..