Magenta MARGULES SF-220, Manual

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ENGLISH - 12
INTRODUCTION:
The SF-220 Preamplifier has a circuit that integrates the output stage with the input stage to obtain an unusually
high-frequency response and transient velocity. This technology resolves the signal with great instrumental detail full of tonal
richness and achieves an optimal output impedance. Capable of efficiently driving any solid-state or tube amplifier without
audible interactions or loss of audio quality.
Our SF-220 features a beautiful wood-carved remote control. The use of premium components complements the advanced
design of the SF220. Gold-tipped electromagnetic relays control all operations on this preamplifier, plus it features a
motorized potentiometer to maintain the integrity of the analog signal. Among its Premium components, the gold PCB plate
stands out, which guarantees maximum conductivity and audiophile-grade elements that help give the characteristic sound.
The power supply in this equipment is of the SHUNT type. As it does not have a control loop circuit, it does not induce
harmonics, which is why it helps maintain the audio signal's integrity. Bypass technology provides a dramatic improvement
in Q damping, the critical factor in voltage regulation for those stages. Good regulation reduces the loss of signal integrity
that occurs when the signal itself changes the operating point. Damping is critical to overall performance, including
smoother transient response and extensive staging.
Our new SHUNT power supply is virtually indestructible due to specially designed dimming technology protecting
equipment from major bulb failure. The active damping of the filament minimizes the microphonic effect produced by the
bulbs.
ANA® ( Neuro-Acoustic Alignment ).
The development of ANA® (Neuro-Acoustic Alignment) technology is a Margules innovation based on how the human brain
perceives sound, prioritizing the harmonic structure over the fundamental tone. This technology is defined based on how
humans perceive and process sound.
This technological advance has its origin in the theory of captivating sound (beautiful sound). Our brain decodes information
from sound waves through our ears. When sounds are close, they keep us attentive due to the relationship between their
perception, the distance in which we perceive them, and their intelligibility. Distant sounds, even when intelligible, do not
attract our attention and are easily ignored.
We created our ANA® technology to achieve a more realistic sound with adequate frequency response, low distortion, and
high-precision harmonic reproduction, optimizing the relationship between source and listener to the maximum to enjoy
music in ways never available before.
TECHNICAL SPECIFICATIONS:
Respuesta de frecuencias: 5-400 khz
Distorsión Armónica Total: <0.014% máx
Máximo nivel de salida: 30 v
Relación señal/ruido: >80dB
Ganancia: 6 dB
Tiempo de subida: 6 micro sec
Tiempo de bajada: 6 micro sec
Consumo de poder (máx.): 55 w
Peso: 14 kg
Dimensiones: (alto, ancho, largo): 13.6 cm x 44 cm x 3 cm