Chapter Two: Using Your Hagen
2.1 Mains Connections, Power and Standby
2.1.1 Mains/Connection to Power Outlet
Please make sure that both switches (Power and Standby) are in the off position before connecting
to the Mains circuit. Verify line voltage before connecting the power cord. Never start Hagen
without speakers being connected to the proper terminals. (See 3.2.8)
2.1.2 Power up, Warm up, Standby off
First turn the Power switch to on (facing up). The indicator will light up. This starts the tube
heating process. After about 40 seconds, the tubes have sufficiently heated for normal operation.
Your Hagen is now ready for operation and the standby switch can be turned to “run” (also facing
up). Premature activation of the standby switch will lead to unnecessary tube stress and
subsequent reduction of the power tube’s life span.
2.1.3 Power Tube Caution
Tubes are electronic components that only function with vacuum intact and under very high
operating temperatures. Each tube has one or more heating filaments, much like a light bulb.
These filaments heat up the Anode of the tube. If you switch the standby switch before these
Anodes have reached their operating temperature then the Anode surfaces are not heated evenly
yet; the “operating temperature” of the tube is not reached yet. This causes undue stress on the
tubes and their related components inside the amp. One should therefore always give the amp it’s
much needed warm-up time, even if musical inspiration hits with full force.
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