I'm currently using a Lampi Atlantic Plus with tube rectification, super clocks and volume control. Very musical and the best dac I have heard to date. The best part is I don't need to spend money on a pre amp which is a real bonus to me. I haven't heard any other Lampi dacs so I don't know how much difference there is in sound quality other than what Fred has said. rockyboy, glad you are enjoying your Amber II? It seems like a sweet spot for the Lampi family to me.
Greg
Greg