Evolution Two

About the Evolution Two

The Krell Evolution Two is a premium stereo preamplifier designed for audiophiles seeking exceptional musical detail, dynamic range, and tonal accuracy. It employs Krell's proprietary Current Mode topology with zero negative feedback, delivering an open-loop bandwidth of 1.5 MHz and extremely low distortion (typically less than 50 parts per million). The volume control uses a 16-bit balanced resistor ladder for precise and consistent attenuation without affecting bandwidth or transient response. The unit supports multiple inputs including single-ended, balanced, and Krell's proprietary CAST (Current Audio Signal Transmission) connections, which transmit audio signals as current to minimize cable-induced distortion. The Evolution Two is housed in a robust chassis and is often paired with Krell Evolution One amplifiers for a matched high-performance system. It is known for its musicality, natural timbre, and ability to reveal fine detail without harshness or artificial coloration, providing a sound quality that approaches live performance realism. The preamplifier is