I have owned the Krell 300i for 7yrs driving Dunlavy SCIII's. I have always liked and enjoyed it. I just recently switched to the PrimaLuna Prologue One. In a nutshell the primaluna makes the Krell sound broken. I am floored at the difference. Much larger soundstage, more musical, more natural,incredible mids, much easier to listen to. This was an educational experience for me. I thought I might use the Krell for rock and the PrimaLuna for classical etc. I haven't hooked up the Krell since I got PrimaLuna. I know this wasn't exactly your question but I thought I'd add the experience of a longtime Krell 300i owner.
