Alpine MRV-F900 - Manual (Page 7)

3
- EN
The MRV-F900 is designed to convey all the passion and
impact of exceptional performances.
The high fidelity circuitry of this 100W x 4-channel power
amplifier, consists of high grade audio components. This
combination produces beautiful harmonics, aiming at the
ultimate in craftsmanship and following the ideas of
microdynamics.
■ High performance MOS-FETs used in power supply unit and final stage
Unlike regular transistors, MOS-FETs can operate at extremely high speeds. They feature low loss of
broad range response as well as excellent signal response.
■ Exclusive audio high speed, high current SBD (Schottky barrier diode) used in power
supply circuit
The specially designed troidal transformer aiming at low noise and a sense of power has been given
the maximum possible capacity. Even the electrolyte of the electrolytic capacitor is specially ordered,
a measure of the thorough considerations taken with the MRV-F900. The polarities of the parts
particularly important for achieving high sound quality, such as the transformer, coils and film
capacitors, are carefully controlled to achieve maximum time precision.
■ Copper foil patterns are used for the circuit boards essential for achieving high quality
sound.
Their thickness is increased to boost speed at high currents. The circuit boards are made of glass
epoxy. Parts have been carefully selected for their low noise levels and stable performance to achieve
unprecedented high sound quality.
■ The circuitry is designed through a process of repeated simulations, and high sound
quality S.T.A.R circuits are used extensively.
Far more attention than with previous tunings prioritizing static characteristics has been paid to group
delay. The constants of both multiple circuits and individual components have been researched
scrupulously, in a tuning process many times more extensive than in the past. As a result, the harmonic
spectrum and high energy characteristics of exceptional performances is output beautifully in every
detail of the sound to achieve unprecedented dynamism.
4 Channel Amplifier