Your Boostaroo® 3-Channel Headphone Amplifier
lets you share a single audio source with three
headphones or mini-speakers. It provides uniform
amplification to each output device.
3-Way Audio Splitting — lets up to three listeners
share one stereo audio source.
Flexible Output Compatibility — lets you use either
headphones or mini-speakers.
Flexible Input Compatibility — lets you connect CD
players, computers, PDA's, MP3 players, portable DVD
players, NASCAR scanners, and video game systems.
LED Light — indicates when the unit is turned on.
Power on the unit
Power on your unit with the provided AC/DC adaptor, or
the USB cable.
OPERATION
You can use the headphone booster while you listen to
an audio source such as a CD player, a computer with
sound output, or a scanner (radio). For the best results,
the headphones you use should have an impedance of
about 16 ohms. If you are unsure, refer to the
headphones’ owner’s manual.
1. With the audio source turned off, plug the
headphone booster’s
1
/
8
-inch (3.5-mm) stereo plug
into the stereo or mono output jack on the audio
source.
Note: If you connect the headphone booster to a
mono audio source, you hear sound only on the left
channel.
2. Plug up to three sets of headphones or mini-
speakers into the output jacks on the headphone
amplifier.
3. Adjust the audio source’s volume control to its
lowest level.
4. Turn on the audio source, then slide the headphone
booster’s power switch toward the jacks.
5. Adjust the audio source’s volume control to the
desired listening level.
6. When you finish using your Boostaroo, slide its
power switch in the opposite direction. Then turn off
the audio source’s power before disconnecting the
headphones and the audio source.
Listening Safely
To protect your hearing, follow these guidelines when
you use headphones.
• Set the volume to the lowest setting before you
begin listening. After you begin listening, adjust the
volume to a comfortable level.
•
Do not listen at extremely high volume levels.
Extended high-volume listening can lead to
permanent hearing loss.
•
Once you set the volume, do not increase it. Over
time, your ears adapt to the volume level, so a
volume level that does not cause discomfort might
still damage your hearing.
Traffic Safety
Do not use headphones when operating a motor
vehicle or riding a bicycle in or near traffic. Doing so
can create a traffic hazard and could be illegal in some
areas.
If you use headphones while riding a bicycle, be very
careful. Do not listen to a continuous broadcast.
Even though some headphones let you hear some
outside sounds when listening at normal volume levels,
they still can present a traffic hazard.
CARE & WARRANTY
Keep the headphone amplifier dry; if it gets wet, wipe it
dry immediately. Use and store the headphone
amplifier only in normal temperature environments.
Handle the headphone amplifier carefully; do not drop
it. Keep the headphone amplifier away from dust and
dirt, and wipe it with a damp cloth occasionally to keep
it looking new.
Modifying or tampering with the headphone amplifier’s
internal components can cause a malfunction and will
invalidate its warranty. If your headphone booster is not
performing as it should, contact us at
http://www.boostaroo.com or call UpBeat Audio, LLC at
1-616-837-9500.
Boostaroo® 3-Channel Headphone Amplifier
OWNER’S MANUAL — Please read before using this equipment.
