I was lucky enough to get some play time with the DAC2 HGC recently. If you're curious about this £1700 DAC / pre-amp / headphone amp here are my thoughts on it:
http://noblehifi.blogspot.co.uk/2013/07/benchmark-dac2-hgc-review.html
http://noblehifi.blogspot.co.uk/2013/07/benchmark-dac2-hgc-review.html