Klimax Solo 500

Class AB amplifiers offer the efficiency of Class B with the low-distortion characteristics of Class A — but only when the bias point is set perfectly. In practice, the optimal bias current drifts as transistors age and as temperature changes during a listening session. Conventional designs set a fixed bias at the factory and accept the resulting degradation over time. Adaptive Bias Control continuously monitors the output transistors' operating point by digitising and sampling the current flowing through them many thousands of times per second. A feedback loop dynamically adjusts the bias current to maintain the ideal operating point regardless of temperature, signal level, or component ageing. The result is an amplifier that delivers the same crossover-distortion-free performance on day one as it does after a decade of use — something no fixed-bias design can achieve.

Utopik is a new-generation switch-mode power supply that uses multiple feedback loops continuously measuring output versus input at each stage to filter out mains-borne noise and eliminate 50 Hz hum, even at extreme volumes. The design employs soft-switching via a resonant tank circuit — ensuring voltage across the switch falls to zero before it is thrown — which dramatically reduces switching noise compared to conventional SMPS designs. Intelligent Valley Switching and Power Factor Correction further optimise efficiency, while precision-regulated isolated power rails deliver up to 2 kW of maximum output with rock-steady voltage stability regardless of dramatic loading changes or mains input variation. The practical result is an amplifier power supply that runs whisper-quiet, stays cool, and provides instantaneous current for demanding transients — enabling products like the Klimax Solo 800 to deliver massive dynamic headroom in a compact, efficient chassis.