The Illusion pre-amplifier extends the Krell tradition of separating the power supply from the audio circuitry in our flagship pre-amplifiers. Sharing the new Class A iBias power amplifier aesthetic and featuring Krell CAST technology, the Illusion pre-amplifier is the ideal match for the new Solo 375 and Solo 575 power amplifiers. The optional crossover functionality offers the ability to use a sub-woofer/satellite speaker arrangement and still maintain the highest quality sonic performance. Previous to the Illusion pre-amplifier, this system configuration would require signals to pass through a sub-woofer’s lower quality crossover circuitry. The Illusion pre-amplifier is the centerpiece of a world class audio system where space is at a premium.