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Integrating an HPA headphone amplifier into
the WMS 4000 system makes life a lot easier
for the FOH engineer. During the performance,
the audio output signals of each receiver can
be monitored directly, without having to
bother with an extra mixer. This feature
proves an invaluable advantage, particularly if
the WMS 4000 system and the mixer are
located in different rooms, with the audio
connection as a potential error source.
The HPA 4000 comes with eight jack inputs
and one jack output for headphones.
Channels can be routed to the headphone
output using a rotary control. A clearly visible
display indicates the currently active channel.
MONITORING WITHOUT A MIXER
AKG WMS 4000 HEADPHONE AMPLIFIER
Display
Indicates the active channel.
On/off switch
Headphone jack
HPA 4000 Headphone amplifier
Jog control
Selects the signal to be monito-
red and sets the monitoring
level.
8 line input jacks, DC input (lockable)
Recommended headphones
For the monitoring of live performances, AKG recom-
mends closed-back headphones in order to ensure
maximum attenuation of ambient noise.
The best choices are the K 171 Studio and the K 271
Studio.
K 171 Studio K 271 Studio
Lockable DC input
Securely connects to a local or central power supply
component, such as the PSU 4000.
8 line level input jacks
AKG WMS HPA 4000