Just posted very brief impression over in the impressions thread, but very pleased with the sound out of the box. It's able to power the he6 to moderate levels which is right around where I like to listen. But they do sound underpowered which was expected. But it's plenty good enough to be enjoyable. My jh13 sounds stellar on this and best of all.....the cheap 2.00 short, black lightning cable I got off eBay works great!!!