Sennheiser HD 630VB review: headphones are full size folding headphones that are easy to drive, so they work with a phone or computer, very sturdy, provide a clean, reference sound with an adjustable sub-bass and have a mic and controls built into the earcup. The HD 630VB has a variable bass dial on the right earcup, allowing you to dial in the precise amount of deep sub bass desired. The HD 630VB gives a detailed, clear, clean sound, nicely seperating instruments and vocals and is tuned to be similar to the Sennheiser HD700 and HD800 in character. The pads are deep and there is little clamping force, to improve long term comfort, but they are a bit heavy.
From Sennheiser: There is a switch in the housing for IOS or Android systems. HD 630VB is crafted from premium materials including strong, lightweight aluminum ear cups, yokes, and sliders, for a lifetime of use.