The philosophy of GM 7O phono stage design, is the most typical for GRAAF, followed for its whole production. It regards mainly the inser...

The GM 2O power amplifier uses an OTL (output transformerless) and OCL (output capacitorless) configurafion. The benefits of this typ...

GM 50 Integrated Amplifier GM-50 is the most recent GRAAF creation, an integrated amplifier born to complete our production of the highe...