selector unit with linear fader
The pretentious owner of high-valued
playback units has very often the problem to select the sources and
to control the volume at the same time.
This concerns especially the professional equipment of the vinyldisks-
and CD-production: studio-turntables, CD-drives, tape-recorders, digital
recording- and playback-units.
Such a selection unit may not influence the selected signal in any way,
it must be totally neutral.
This task is not new. But the results we had in the past gave rise to
many discussions about the influence of the sound, created by pre-amplifiers.
is a new way of a solution for this problem.
Selector DU 111 is a selection unit with the following attributes:
Absolutely sound-neutral selection because of a pure passive circuit
1. The selected sources are not influenced by electronical components,
neither tubes, transistors nor integrated circuits, therfore absolutely
no influence on the selected signal.
2. The used components are selected elements which have been proved
true variously in the professional studio technique.
What has been proved true from the beginning in recording- and sound-production,
can not be bad at home at the end of this reproduction chain.
a. Gold-plated connectors
b. Gold-plated switching elements
c. Large scale dimensioned conductors
Professionel stereo-linear fader for volume control.
This high-valued linear fader from the professionel recording technique
has as well been proved true in all styles of music-recordings many
thousand times and worldwide because of his neutrality, longtime-stability,
longevity and exactness of the technical datas.
4.The pushbuttons for the sources are permanent lightened dimly. The
pushbutton of the selected source lights bright.
All these attributes are valid in position pro (means professionell)
of the general source switch.
To have the possibility to select high-end-units, the general source
switch of the Selector DU 111 has another operating position:
In this position a balanced impedance adaption guarantees the best matching
of the linear fader to the high-end-units. By that the Selector DU
111 can show his positive attributes like the absolute passive selection
and the absolut passive volume control on these high-valued units, too.
The output of the Selector DU 111 is directly connected to the
Extensive configurations of cables out of the accessories list allow
to connect all kinds of units.
If you connect the output parallel you can also use recording equipments
at the same time.
6 stereo sources (12 XLR-connectors)
1 stereo output (2XLR-connectors)
Input impedance in position pro
in position home > 20 kOhm
Output impedance in position pro <
in position home <
Signal to-noise-ratio peak weighted
in position pro given
by the connected unit
in position home >
Inputs and outputs are balanced, unbalanced operation is possible.
Power supply (switching units, LED illumination, impedance adaption)
by external power supply. 230
V AC 24 V- / 250 mA
430 x 290 x 77 mm
approximately 5,5 kg