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4. FRONT PANEL CONTROLS
Mains Power push button switch
To switch on the amplifier, push the knob. The LED next to the knob lights up gradually.
Important!
: Do not pull on the knob when it has been pushed in, as this could damage the
retaining mechanism. Make sure that access to the power switch is never obstructed.
Bias measurement selector switch
Off position:
The measurement facility is disabled
Position V1 - V4:
The measurement facility is connected to the relevant tubes.
To ensure the accuracy of any adjustments, make sure that the volume
control of the preamp is set to 0.
NOTE:
The RE 290 is equipped with a soft-start circuit and a power-up delay timer.
The amplifier is ready for use after a delay of approximately 2 minutes. Because there are
no relays in the signal path, a low-level, slightly distorted signal from your source
equipment may be heard through your loudspeakers during warm-up. This circuitry extends
tube service life and also protects the power section from voltage spikes and excessive
inrush currents.
