No, no power packs here, or much of anything else for that matter.
Though I've had an operable unit for 2 weeks, my schedule has allowed for little critical listening. I should have more time this week to get a better feel for it.
I will say that if lonewolfny42 is looking for something clear and precise, this might be just the ticket. Mellow is NOT a term I'd use to describe what I've heard thus far.