I've had a few weeks with it, tried a few speakers with it, and added a 10,000 if electrolytic to the 4f super capacitor, I had a suspision that the esr of the super cap could be causing voltage droop during peeks, and thought that the electrolytic might help. It seems to, I've tried to push it into clipping and it seems to need to go louder before it does. It seems to "gel" with paper drivers, perhaps because of the sensitivity of them.