Graaf

Every GRAAF equipment originates from the experience and the creativity of Giovanni Mariani, a designer who has spent most part of his life studying and trying to understand the physical principles that rule the operation of tubes. Even if the continuous advancement in the electronics field has brought to the widest diffusion of solid state equipments, that are often very effective, a musical reproduction with no compromise for timbre and overall quality rarely is able to leave apart from tubes.
On Demonstration GM50   Graaf website

GM 50 Integrated Amplifier
 
GM-50 is the most recent GRAAF creation, an integrated amplifier born to complete our production of the highest class. GM-50 includes in a single frame the features and the level of performance that in the past were an exclusive of GRAAF preamplifiers and power amplifiers. Construction qualities, sound performance and the highest finishing level are joined with the lower cost and the ease of use of an integrated amplifier. The "GM" monogram on the front panel is a synonimous of the greatest sound quality, until now exclusive for top level electronics like GRAAF GM-200 power amplifier and GM- 13.5 B preamplifier. The goal of GM-50 is to establish new quality standards between top class integrated amplifiers.
 

GM 100 OTL Amplificatore di Potenza
 
Your GM 1OO is the result of many years of study and experience in the audio professional field, carried out by our technical staff directed and supported by Mr. Giovanni Mariani. The GM 1OO differs from conventional tube amplifiers both for its main circuitry, completely balanced from input to output, and for a particular component called a transmission line transformer (TL), which enables the power tubes to drive any type of load. Every circuit detail was studied with great care during the design of the GM 1OO, a practice which continues during manufacture. The peerless musical reproduction available from the GM 1OO is the result of high technology married to the traditional virtues of hand-assembly.