HeeftyPrecisely. DACport HD gives you 384kHz, DSD and higher output power, which is ideal for driving some planar magnetics, such as Audeze LCD3, 4. It also shines with any high-impedance headphones, which are harder to drive (think 250 ohms through 600 ohms). HD650 and Beyer 880, T90, etc., all benefit from a stronger, more confident sound.