Magnat RV 1 Bedienungsanleitung Seite 7

RV 1
PHILOSOPHY
The power amplifier is a push-pull class AB circuit with an output of 35 watts at 4 and 8
ohms. With this configuration, the sound quality has a greater priority than an arbitrarily
chosen higher number of Watts. This circuit utilising EL34 tubes manufactured in
Russia on German machines, combines reliability, a clear sound and a high degree of
compatibility for a tube amplifier in relation to loudspeaker selection. Instead of being
mounted on a circuit board, the power amplifier is independently wired by hand, while
matched pairs of tubes are used. The output stage is driven by series connected
12AU7/ECC82 tubes.
Before final assembly of the RV 1, all pre- and output amplifier tubes are subjected to a
60-hour burn-in test. Defective tubes or those not complying with our stringent quality
stipulations are identified and rejected.
Tube experts all agree that the quality of the output transformers is the key to high
performance. Many low-budget tube amplifiers use output transformers with cheap
toroidal cores. They aren't found in either the legendary classic tube amplifiers or more
modern high end designs due to the negative effects on the sound. In the RV 1,
Magnat uses only classically designed output transformers with El iron cores. The
material selected for the laminations is high-quality, silicon-alloyed transformer plate.
This complex and expensive design has been accepted for decades as the optimum
configuration for high performance in tube amplifier engineering.
Even the best circuits can only display their true strengths with an exquisite power sup-
ply. In the RV 1, 9 separately stabilised supply voltages are used for the different tubes
and circuits. This produces an exceptionally low noise floor and enhances long-term
stability.
In addition to the mechanical design and electronic circuitry, a great deal of attention
has also been paid to a variety of the details in the RV 1.
The loudspeaker terminals are very substantial gold plated items clad in transparent
acrylic insulation. All sound-relevant components have exacting tolerances with only
high-quality film capacitors and metal film resistors used.
The tube bases also play a crucial part. The power amplifier is equipped with extremely
durable and temperature-resistant ceramic octal sockets. Noval sockets with precision-
milled, gold-plated annular contacts are used on all the other tubes. This avoids contact
problems even after very long operating times.
The unit is supplied with a reassuringly solid, full-metal remote control. This allows the
volume to be adjusted easily and conveniently from your chair. All switch and control
knobs are also machined from solid aluminium.
All the development, materials and attention to detail that have gone into the RV 1 are
not geared towards short-term gimmickry. They enable the connoisseur to enjoy nume-
rous hours of deeply rewarding immersion in perhaps the most beautiful medium
music.
known to mankind: