Origins · engineering
Octave Audio was founded in 1986 by Andreas Hofmann in Karlsbad, Germany, building on his family's long heritage in transformer design — the Hofmann transformer business has supplied premium output and power transformers to the German tube-amplifier industry since well before Octave itself existed. That transformer-design inheritance is the technical core of every Octave amplifier: hand-wound output transformers built in-house, paired with tube circuits engineered for unusual reliability and ease of tube-rolling. Octave amplifiers are designed to run for decades on standard tube replacements with no recapping or rebiasing required by the owner; the engineering favors longevity and serviceability over the more fragile circuit topologies common in the boutique tube-amplifier category.
What Definitive carries
The line Definitive carries for the tube-amplifier customer spans the full Octave range. The V 40 SE is the entry integrated amplifier — a 35-watt-per-channel push-pull design with KT-150 output tubes that has remained in production through multiple revisions. The V 70 Class A and V 80 SE step up to higher power and the Class A operating mode that Octave is best known for. The Jubilee series is the reference end of the catalog — Jubilee monoblocks paired with a Jubilee preamplifier deliver one of the highest-output pure-tube systems built in Germany, with the same in-house transformers and the same long-term-reliability engineering as the rest of the line.
Where it sits in the room
In the German tube-amplifier conversation Octave is grouped with Audionet and Einstein on the solid-state side and with Brinkmann and Lüsken on the tube side, but it occupies a distinct position: a transformer-engineering pedigree few competitors match and a product line designed to outlive its owner. For Definitive customers who want the tube-amplifier sound with serviceability built in, Octave is the answer.