10
Control Elements
The QURE features a special relay circuitry that slowly builds up
the 275 volts over a period of 45 sec. Thereby the lifetime of the
tubes is increased by up to four times. In pre-mastering this
circuitry garantees a reproducable sound for a long time. The
tubes in use are Sovtek 12 AX 7s.
The WARM UP-LED (red) illuminates after the main power has
been switched on.After 45 seconds it switches to READY (orange-
LED). The in- and outputs of the tubes are de-coupled at 10Hz
with condensers of high voltage and capacity (1 microFarad/
400 V/5 %) to minimize offset and humming noise.
If the unit is already switched to active with the MASTER switch
during the warm up period you will not hear any processing until
the Q
URE switches to READY. Then the processed signal is swit-
ched to the outputs. Although you may not have done any equa-
lization to the signal you will hear a little difference between the
processed and the unprocessed signal because the tubes already
produce a portion of their typical sound.
MASTER switches the Q
URE´s entire sound processing on or off.
The illuminated switch indicates that the Q
URE has been activated.
The MASTER function is a relay-hard-bypass function which
links the input socket directly with the output socket to bypass all
filters by pressing just one button.
To increase operation reliability the Q
URE monitors the power
supply´s primary and secondary voltages and switches automati-
cally to hard bypass once certain tolerances have been exceeded
(power failure safety).
WARM UP &
READY
2
1
MASTER
2
1
3
4
5
6
7
11
1312
9
16
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