Threshold, Levinson, Bryston, Krell, ?others? used amps

Honestly it hasn't.  I was going to check the bias and idle current measurements in the next few days.  It isn't bad at all.  Frankly, I'm wondering if it isn't the reason that Threshold sued Nakamichi and thus Nakamichi came out with the PA-7ii shortly after the suit was resolved.  The PA-7 was a nice jump up from my old Adcom GFA-555ii's and I'm wondering if checking out some of the class leaders' products from back in the day would be yet another jump or if the PA-7 is at the peak of the curve and then you start seeing diminishing returns for dollars spent.

I used to own a Forte 4A 50 wpc Class A Amp. At 4 ohms it was 100 wpc in Class A. This was the budget series of Threshold. Great Amp I still regret selling it. Was known to have enough power to run Maggies.

 Looking for an amp that is great at doing the disappearing act, smooth sounding, but not colored, and with lots of authority.  

I suggest looking at Ayre.
B

I would have thought that one of McCormack's offerings would have fit the bill.

You might also consider Parasound. They have been offering excellent value for a long time. 

One thing to keep in mind, is that the older the amp is, the more likely it will be that the capacitors are reaching the end of their useful life. If the amp hasn't been recapped, you will likely have a hefty bill in your future for amps that are more than 15 or so years old. 

With the changes in ownership of many prestigious classic brands like Krell, Levinson, Classe, Threshold..., it is getting harder and more expensive to get good service on the older models. While some of the older amps from these brands still deliver excellent performance, the cost of ownership may not make these older amps quite the bargain they initially appear.