I have no experience with the Kondo Ongaku, but I have listened to some complete Audio Note systems. IMHO they are closed systems - you should not mix components from other brands and either you love the way they play music - they manage to create a fantastic emotional connection using some types of music, or you hate them. They are not accurate, and do not pretend to be. But if I was of these music lovers that listen 95% of the time to opera or orchestral I would probably own an Audio Note system. The way they manipulate the recordings of human voice is really terrific. And as Andromedaaudio also noticed, the layered aspect of voices and orchestra was so natural that you could not believe you were listening to a recording. And now the part that most of the forum members dislike even more than the acceptance of coloration - once the prices start climbing the perceived sound quality also increases accordingly.
I have no experience to support my claim, but I have the feeling that conventional room acoustics can not be applied to Onkagu and simlilar products based systems. Audio Note and tube traps should not mix well ...