FYI the Monoprice Cavalli Liquid Plantinum amp starting shipping yesterday and i am burning one in (8 hours now) as I write this.
It only weighs a bit over 3 pounds but has a nice, solid feel. Nice casework. Top gets quite warm when running though. Maybe someone will make an LPS for it but the SMPS seems to power it fine.
I have been using an Auaralic Taurus Mk II for the past year. Main cans are Focal Elex (balanced), HD600 (balanced), Fostex TH-X00.
Initial impression using the Elex is positive. It's slowly taking shape.