Bit of a noob question here, but genuinely curious as to the answer. What functionally would happen if one were to amplify a powered headphone? For example, take a signal from a laptop/iPhone/DAP, amp it using your favourite headphone amp, and then send it via cable to your powered (usually...

When Aëdle first arrived on the hi-fi scene in 2011, they very quickly rose to prominence, and became known for their beautiful, handmade headphones, the VK-1’s. With an almost religious focus on minimalism, and fusing striking design with impressive function, these lambskin and CNC-milled...

Can anyone offer an informed opinion on the various merits and weak points of these two DAC/Amp combos? I had done quite a bit of reading on the two, and both have excellent reviews. Would someone be able to give a direct A/B, who preferably has extensively used both? 

This may seem slightly silly, but is there any harm in connecting a set of powered/wireless headphones (such as the Wireless Momentums, or Plantronics Backbeat Pro) to an amplifier? What actually happens?    Any help much appreciated. 

I have recently decided to delve into the secular world of high fidelity audio, and am very interested in acquiring myself a pair of planar magnetic headphones. The question is, what is available, affordable, and commendable, aside from the HiFi HE400, or Oppo PM-3?