RockBoard HA 1 In-Ear Monitoring Headphone Amplifier

The RockBoard HA 1 In-Ear Monitoring Headphone Amplifier is the ideal  partner for singers, keyboardists, drummers, guitarists, bassists and  other musicians. It establishes the connection between the monitoring  signal from the mixing console, instrument or amp and your own  headphones. Operation is child's play: Simply activate the unit with the  volume control and adjust the desired volume for the headphone signal.  With the stereo/mono source switch, easily accessible on the unit, the  RockBoard HA 1 can be adjusted to the respective input signal. The  extremely compact and lightweight aluminium housing is equipped with a  clip for fixing to a belt or waistband. The HA 1 has a status LED that  changes colour depending on the available battery voltage. Two AAA  batteries provide up to 12 hours of power, and changing the batteries is  a very simple job thanks to the practical battery compartment with clip  lock, which can be easily reached from the outside. The HA 1 is  equipped with a combination jack for use with stereo jack (6.35 mm) and  XLR cables for the input signal and a 3.5 mm stereo jack headphone  output. On stage, in the rehearsal room or at home, the RockBoard HA 1  in-ear monitoring headphone amplifier always offers full control over  the monitoring signal. In small clubs, in-ear monitoring improves the  acoustics in the hall; when the band turns up the volume again, the  signal is quickly adjusted and you can enjoy the same sound in every  part of the room.