A Krell FPB 600 is specified as 600 watts into 8 ohms, however is measured to produce 945 watts continuous into 8 ohms. (Find out more here: https://www.stereophile.com/solidpoweramps/829/index.html)
Power wise, the Krell FPB-600 is a serious and muscular contender that can drive even the most demanding speakers with ease.
Originally sold at USD12,500, this preowned amplifier is going for a reasonable price by a previous Krell Dealership.