Boostaroo® 3-Channel Headphone Amplifier
OWNER’S MANUAL — Please read before using this equipment.
Important Safety Instructions:
Please read these instructions, keep them,
and heed all warnings.
Listening Safely: Follow all instructions.
To protect your hearing, follow these guidelines when you use headphones.
• The Boostaroo provides up to 2 times the power or volume to ordinary head-
phones. Use caution to protect your hearing.
• Set the volume of your player or volume control headphones 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 listen-
ing 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
DO NOT use this apparatus near water.
Water will short circuit the unit and cause permanent damage to the unit that is not
covered by the warranty,
Keep the Boostaroo dry; if it gets wet, wipe it dry immediately. Use and store the
headphone booster 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.
The Boostaroo comes with a 12-month warranty against manufacturing defects and
failures from date of purchase. For further warranty and product information go to
http://www.upbeataudio.com/warranty.html
Modifying or tampering with the Boostaroo’s internal components can cause a malfunc-
tion and will invalidate its warranty. If your headphone amplifier is not performing as it
should, contact us at http://www.upbeataudio.com or call UpBeat Audio, Inc. at 1-616-
837-9500 in the USA.
Features:
Your Boostaroo® 3-Channel Headphone Amplifier lets you share a single audio source
with three headphones or mini-speakers. It provides uniform amplification and doubles
the volume from the player 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's, scanners, and video games. If it uses a headphone, it can use a Boostaroo.
LED Light
— indicates when the unit is turned on.
PREPARATION
Installing Batteries
Your headphone booster uses two AA batteries (not supplied) for power. For the best
performance and longest life, we recommend alkaline batteries.
Cautions:
• Use only fresh batteries of the required size and recommended type.
• Do not mix old and new batteries, different types of batteries (standard, alkaline, or
rechargeable), or rechargeable batteries of different capacities.
1. Squeeze and pull back the
battery compartment cover
to remove it.
2. Place the batteries in the
compartment as indicated by
the polarity symbols (+ and
–) marked inside.
3. Replace the cover.
When the headphone booster stops operating properly, replace the batteries.
Warning:
Dispose of old batteries promptly and properly. Do not burn or bury them.
Caution:
If you do not plan to use the headphone booster for two weeks or more,
remove the batteries. Batteries can leak chemicals that can destroy electronic parts.
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 32 ohms or under. 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 booster.
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 booster, slide its power switch in the opposite direction.
Then turn off the audio source’s power before disconnecting the headphones and the
audio source.
SPECIFICATIONS
Frequency Response
(EIAJCP-307 Method) . . . . . . . . . . . . . . . . . . . . 20 to 20,000 Hz ± 2dB
Output (at 3VDC into)
16 ohm headphones . . . . . . . . . . . . . . . . . . . . 40mW per channel
32 ohm headphones . . . . . . . . . . . . . . . . . . . . 30mW per channel
Power Requirements . . . . . . . . . . . . . . . . . . . . 3V DC (two AA batteries)
Dimensions (HWD) . . . . . . . . . . . . . . . . . . . . . 1 ½ x 4 ½ x 11/8 in
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (38 x 114 x 28 mm)
Weight (with batteries) . . . . . . . . . . . . . . . . . . 6 oz
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (170g)
Specifications are typical; individual units might vary. Specifications are subject to
change and improvement without notice.
T613
AO0139AAA1
02A03 Manufactured and Printed in China
