Just sharing my experience with 590aII, I have used 590aII for half years now, pairing with Spendor s8e and Meridian 808 CD player. Compairing to previous amp Krell 400xi, it has big improvement in all aspect. Frankly, I did not enjoy listen to Krell much, but Luxman is what I really enjoy with. It is a good amp, I don't feel any lacking in power for their 30w output, felt they are even powerful than 400xi 200w output. It Sounds detail, smooth, musical. Only 1 down side is the heat of class A amp generated on top, need some good ventilation.
Hope this help.
Charles
Hope this help.
Charles