B.thy mono – So the laird said and so it was. Hello B.audio B.amp, a 300/500-watt into 8/4Ω class A/B fully symmetrical monaural circuit with class A p/p driver stage. It also contains the French company's IOD or Intelligent Output Drive, a proprietary application of local feedback to linearize operation under all working conditions. It even claims to reduce crossover distortion to below the measurable threshold. This suggest class A type sonics without generating the same heat. €24'900/pr. rings the bell.