So...as the title suggested, I'm looking for a tube amp with a small footprint that can power the HE-500. I'm considering Hifiman's own EF5, but I always like to look at my options first. It needs to have quite a kick considering the HE-500 needs a bit more power than the LCD-2. Silver aluminum is preffered, but obviously not too important in the grand scheme of things. Thanks! EDIT: Woo 6 on the list.