thank you for your inquiry.
HI level at the 082 integrated amplifier means a higher output amplification about +6dB towards LO level. HI is the standard setup. At high sensitivity speakers where overdrive the signal can use the LO setup.
For your Dynaudio speakers we recommend the HI setup...
Have a chance to buy, but cant listen to it before.
Also i have listen to accu e550 integrated, and not so much like it. Sound of accu is harsh on highs and soundstage is not great t all, also it have a little power reserves.
How is Gryphon Diablo in comparasion, i heard ppls say's its on...