Pure Class A amps above 100 Watts?

Gryphon Colosseum Stereo amp, 160w Class A. Smooth, powerful, and fast. 175lbs.

Your less than $10k requirement and greater than 100w Class A requirement are in conflict with each other.

These might be hard to find used, but great amps! Power for days! 125wpc Class A. 400wpc AB. A great value that disappeared all too soon. 
http://www.aragonav.com/palladium-1k-klipsch

mikethehunterguy
125wpc Class A. 400wpc AB.

Sorry Mike impossible, a 400w Class-A/B amp with 125w of Class-A bias would have to have heatsinking 10 x more of what they have on this.

At a guess that heatsink with the rail volts needed for 400w a/b, could accommodate at most around 20-30watt of Class-A, without any serious fan forced cooling.
As the rail volts go up for more A/B wattage, the Class-A heat factor to be dissipated goes up exponentially for each watt of class-A

I built a 200w A/B amp that had 150w of Class-A bias, the only way was to water cool it. It was the size of a coffee table, and a 2 man lift.

Cheers George

A Krell KSA 300 is a bad idea unless you are fond of rebuilding output stages.

125wpc Class A. 400wpc Class A/B.

This is misinformation that still continues today. I own the amp, so I’ve researched it thoroughly.

Class A output is 2.7 wpc RMS and 5.4 wpc peak.

This was a sales marketing error!! The 125wpc is draw when at idle.