Looking for a portable DAC/Amp combo which will -properly- drive my dt931 and HD650s. Should work with iPhones and ideally as an USB out from a computer. Budget around 1k. Does such a beast exist? Most of what I've found won't provide enough power for these cans. Thanks, -Jim

I'm looking for recommendations for a couple of closed headphones to use as a 'Silent Booth' for a game show. My big concern is an ear-piece that will still block sound if the contestant is wearing glasses. We would be playing music into the headphones.    Thanks.   -Jim   Edit: These will...