Are Nakamichi amps any good?


I currently have a Krell KST 100 amp with a YBA 2 preamp driving my Vandersteen 2's but Threshold amps have caught my attention.

1) Would a Threshold amp be a step up from the Krell?

2) Are Nakamichi amps any good or are they Threshold wannabes?

I'm trying to keep the upgrade below $1000 and I'll recap amp if needed.
digepix
And , "Oh Yeah", The PA-7, Mkii amps are NOT a better amp than the PA-7. And do not sound as nice.
 Also, "Mr. Pass", "Invented" , "Stasis" tech. And- He did not, "Re-license", to Nak after he left. And that is when Nak built the PA-7, Mkii.
. This at about the time of Nak's, "Fall from Grace". Which began in earnest after Mr. Pass left, The orig. owner died and "Marketing", took over. "Onkyo" took the Japanese thrown for a bit and now?
 Sound united! Yipee!
 "Pukes"....
 "Yes", It IS just that