Octave LogoOCTAVE started out in 1968 as a transformer manufacture. For over 30 years OCTAVE has been building innovative vacuum tube amplifiers in Germany that combine proven tube technology with innovative semiconductor circuitry with an absolute commitment to perfection. Octave combines the best of vacuum tube and solid state performance with modern semiconductor control to produce state-of-the-art sound with industry-leading reliability which is a result of OCTAVE’s meticulously designed electronic monitoring and protection systems. Every OCTAVE component is carefully hand-built at OCTAVE’s headquarters in Karlsbad, Germany.