Simply put, the REF150se is a breakthrough in stereo power amplification.  Replacing the REF150—which was one of the most respected modern stereo amplifiers—was a daunting task, but it has been accomplished.  The REF150se offers more power, greater dynamic thrust, a more vivid and resolved presentation, greater finesse, and quieter operation. Now with the KT-150 tubes elevating it to a new level. 

It is the new benchmark!!