The Volume Control; Balance Control; The Amplifier - Violectric HPA V281 User Manual

THE VOLUME CONTROL

The desired volumes for left and right channel are set simultaneously by
means of the "VOLUME" control.
Volume can also be set via remote control. For this purpose, the volume
control is actuated by a servo motor. Manual operation of the knob at
the same time is possible without the risk of damage (although not
useful...).
Press the rocker button "Volume Up/Down" in order to increase or
decrease volume. Pressing "left/right" on the directional pad will have
the same effect.

BALANCE CONTROL

is provided to compensate moderate level differences between left and
right channel. These may root in the recorded material itself, noticeable
differences between left and right headphone system, or differences in
the user's individual hearing.
All of the above can be carefully compensated.
The balance control offers a precise center detent in case no adjustment
is necessary. In order not to impair the V281's perfect crosstalk specs, it
takes effect on the right channel only.

THE AMPLIFIER

The input signals are fed to an amplifier stage especially designed for
this application, with eight transistors per channel. The V281 houses no
less than four of those ! Channels are physically separated from each
other to ensure optimum crosstalk rejection.
The frequency range covers 5 Hz ... 70 kHz (-0.5 dB) or 3 Hz...200 kHz
respectively (-3 dB), in order to ensure fully linear performance within
the entire audible range. Overall gain is set to +8 dB (unbalanced) or
+14 dB resp. (balanced) to ensure sufficient volume reserve also for
high-impedance headphones.
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