You should put Musical Fidelity KW500 or the newer KW550 integrated amps on your list. Both amps have all the characteristics that you are looking for -- smooth, full / robust, and easy- on-the-ears sound.
Ldk
Ldk
Krell 400xi vs. BAT VK-300x vs. McIntosh MA6900
I'm considering 1 of these 3 excellent Integrated Amplifiers to power my newly aquired Wilson Sophia Speakers. My Source Component will be either the Krell Standard or BAT VK-D5. Installing in a mid>large size living room. I'm looking for a smooth, full/robust, easy- on-the-ears sound. I'd rather not have to buy all 3 for an at home a/b/c audition, though I know that this is the preferred method of evaluating Components. Thought that I might give this post a try, to at least narrow it down to 2. Thanks!