The Krell Evolution 600 monoblock power amplifier delivers 600W RMS into 8 ohms (1200W into 4 ohms), features CAST, balanced, and single-ended inputs, and boasts a slew rate of 100V/µs,

with dimensions of 17.25″ (438mm) W by 9.75″ (248mm) H by 22.05″ (560mm) D and a

weight of 135 lbs (61.1 kg).

The Evolution 600 achieves a full 670W/8ohm and

virtually doubles this with 1.32kW/4ohm

followed by 2.62kW/2ohm which must put it as the ‘stiffest’ power amp on the planet.