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Bluetooth® 5 Transmitter & Receiver
with aptX™, aptX Low Latency, and SBC
P/N 38070
User's Manual
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SAFETY WARNINGS AND
GUIDELINES
Please read this entire manual before using this
device, paying extra attention to these safety
warnings and guidelines. Please keep this
manual in a safe place for future reference.
• This device is intended for indoor use
only.
• Do not expose this device to water or
moisture of any kind. Do not place drinks
or other containers with moisture on or
near the device. If moisture does get in or
on the device, immediately turn it off and
allow it to fully dry before powering it on
again.
• Do not expose this device to excessive
vibration.
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• Do not touch the device, the power cord,
or any other connected cables with wet
hands.
• Do not expose this device to excessively
high temperatures. Do not place it in, on,
or near a heat source, such as a fireplace,
stove, radiator, etc. Do not leave it in
direct sunlight.
• Do not place or install this device in an
area where it can be exposed to excessive
amounts of dust, humidity, oil, smoke, or
combustible vapors.
• This device contains a Lithium-polymer
battery. Dispose of this device only in
accordance with local, state, or federal
regulations for electronic waste.
• Charge the battery before first use and at
least once every three months. A full
charge will take about 2 hours.
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• Clean using a soft, dry cloth only. Do not
use chemical cleaners, solvents, or
detergents. For stubborn deposits,
moisten the cloth with warm water.
• This device has no user serviceable parts.
Do not attempt to open, service, or
modify this device.
CUSTOMER SERVICE
The Monoprice Customer Service department is
dedicated to ensuring that your ordering,
purchasing, and delivery experience is second
to none. If you have any problem with your
order, please give us an opportunity to make it
right. You can contact a Monoprice Customer
Service representative through the Live Chat
link on our website www.monoprice.com or via
email at support@monoprice.com. Check the
website for support times and links.
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PACKAGE CONTENTS
Please take an inventory of the package
contents to ensure you have all the items listed
below. If anything is missing or damaged,
please contact Monoprice Customer Service for
a replacement.
1x Bluetooth® Transmitter and Receiver
1x Micro USB Charging Cable
1x 3.5mm Audio Cable
1x S/PDIF Digital Optical Cable
1x User's Manual
CHARGING
Charge the battery before first use and at least
once every three months. A full charge takes
about 2 hours.
1. When the battery level is low, the LED will
flash red.
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2. Plug the included micro USB cable into
the USB port, then plug the other end into
a USB power source (not included). The
LED will illuminate solid red, regardless of
other indications.
3. When charging is complete, the LED will
turn off.
4. Unplug the micro USB cable from the
device. The LED will resume normal
indications.
PRODUCT OVERVIEW
1. TX/RX: When placed in the TX position,
the device operates as a Bluetooth®
transmitter. When placed in the RX
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position, the device operates as a
Bluetooth® receiver.
2. SPDIF/AUX: When placed in the SPDIF
position, the device uses the S/PDIF
digital optical input/output. When placed
in the AUX position, the device uses the
3.5mm input/output.
3. AUX: 3.5mm jack for analog audio
input/output.
4. SPDIF IN TX: S/PDIF digital optical input
for use with the device as a transmitter.
5. SPDIF OUT RX: S/PDIF digital optical
output for use with the device as a
receiver.
6. USB: Micro USB charging port for
connecting the included micro USB cable
to a USB power source (not included).
7. Multi Function Button (MFB): Press and
hold the MFB for 3 seconds to turn the
device on or off. Momentarily press the
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MFB to pause or play the connected
device.
8. LED: The LED indicator shows the power
and Bluetooth® pairing status of the
device.
BLUETOOTH® PAIRING
TX Mode
1. Ensure the device is powered off and the
TX/RX switch is in the TX position.
2. Press and hold the MFB for 3 seconds to
power the device on, then quickly double
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press the button to enter pairing mode.
The LED will flash blue rapidly.
3. Put your Bluetooth® audio device (e.g.,
headphones, speaker, etc.) into pairing
mode. Once pairing is complete, the LED
will flash blue slowly.
4. Using the included 3.5mm audio cable,
plug one end into the AUX jack, then plug
the other end into the audio output of
your mobile device. Alternatively, use the
included S/PDIF digital optical cable, plug
one end into the SPDIF IN TX port, then
plug the other end into the S/PDIF digital
optical output of your audio source
device.
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RX Mode
1. Ensure the device is powered off and the
TX/RX switch is in the RX position.
2. Press and hold the MFB for 3 seconds to
power the device on, then quickly double
press the button to enter pairing mode.
The LED will flash red and blue rapidly.
3. Open your mobile device's Bluetooth®
settings. Locate and select the MP38070
entry. Once pairing is complete, the LED
will illuminate solid blue.
4. Plug your audio device (speakers,
headphones, etc.) into the AUX jack. Use
the included 3.5mm audio cable, if
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necessary. Alternatively, plug the included
S/PDIF digital optical cable into the SPDIF
OUT RX port, then plug the other end into
the S/PDIF digital optical input on your
amplifier or receiver.
Multi-Device Pairing
1. Pair your first device as normal.
2. Double press the MFB to re-enter pairing
mode.
3. Pair the second device as normal. When
pairing is complete, the LED will illuminate
solid green.
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LED INDICATIONS
Status
LED Indication
Power On
Flashes blue twice
Power Off
Flashes red twice
TX Mode Pairing
Flashes blue
RX Mode Pairing
Flashes red and
blue
TX Standby
(Disconnected)
Flashes blue once
every second
RX Standby
(Disconnected)
Flashes blue twice
every 3 seconds
Standby
(Connected)
Solid blue
Two Devices Paired
Solid green
Low Battery
Flashes red
Charging
Solid red
Charging Complete
LED off
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TECHNICAL SUPPORT
Monoprice is pleased to provide free, live,
online technical support to assist you with any
questions you may have about installation,
setup, troubleshooting, or product
recommendations. If you ever need assistance
with your new product, please come online to
talk to one of our friendly and knowledgeable
Tech Support Associates. Technical support is
available through the online chat button on our
website www.monoprice.com or through email
by sending a message to
tech@monoprice.com. Check the website for
support times and links.
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SPECIFICATIONS
Model
38070
Bluetooth® Version
5
Bluetooth Profiles
A2DP, AVRCP
Supported
Receiver Codecs
aptX™, aptX low
latency, AAC, SBC
Supported
Transmitter Codecs
aptX™, aptX low
latency, SBC
Battery Capacity
350mAh
Charging Time
About 2 hours
Standby Time
About 50 hours
Playback Time
12-15 hours
Operating
Temperature
+14 ~ +131°F
(-10 ~ +55°C)
Dimensions
2.4" x 2.4" x 0.7"
(60 x 60 x 18 mm)
Weight
1.4 oz. (39g)
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REGULATORY COMPLIANCE
Notice for FCC
This device complies with Part 15 of the FCC
rules. Operation is subject to the following two
conditions: (1) this device may not cause
harmful interference, and (2) this device must
accept any interference received, including
interference that may cause undesired
operation.
Modifying the equipment without Monoprice's
authorization may result in the equipment no
longer complying with FCC requirements for
Class B digital devices. In that event, your right
to use the equipment may be limited by FCC
regulations, and you may be required to correct
any interference to radio or television
communications at your own expense.
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This equipment has been tested and found to
comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable
protection against harmful interference in a
residential installation. This equipment
generates, uses, and can radiate radio
frequency energy and, if not installed and used
in accordance with the instructions, may cause
harmful interference to radio communications.
However, there is no guarantee that
interference will not occur in a particular
installation. If this equipment does cause
harmful interference to radio or television
reception, which can be determined by turning
the equipment off and on, the user is
encouraged to try to correct the interference
by one or more of the following measures:
• Reorient or relocate the receiving
antenna.
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• Increase the separation between the
equipment and receiver.
• Connect the equipment into an outlet on
a circuit different from that to which the
receiver is connected.
• Consult the dealer or an experienced
radio/TV technician for help.
Radio Notice for FCC
Caution
This FCC Part 15 radio device operates on a
non-interference basis with other devices
operating at this frequency. Any changes or
modification to said product not expressly
approved by Monoprice, including the use of
non-approved antennas, could void the user’s
authority to operate this device.
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This device complies with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) this device may not cause
harmful interference, and (2) this device must
accept any interference received, including
interference that may cause undesired
operation.
Notice for Industry Canada
This Class B digital apparatus complies with
Canadian ICES-003.
Cat appareil numérique de la classe B est
conforme à la norme NMB-003 du Canada.
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Radio Notice for Industry Canada
Caution
This IC RSS-210 radio device operates on a non-
interference basis with other devices operating
at this frequency. Any changes or modification
to said product not expressly approved by
Monoprice, including the use of non-approved
antennas, could void the user’s authority to
operate this device.
This device complies with IC RSS-210. Operation
is subject to the following two conditions: (1)
this device may not cause harmful interference,
and (2) this device must accept any
interference received, including interference
that may cause undesired operation.
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The Bluetooth® word mark and logos are
registered trademarks of Bluetooth SIG, Inc.
Qualcomm® is a trademark of Qualcomm
Incorporated, registered in the United States
and other countries. aptX™ is a trademark of
Qualcomm Technologies International, Ltd.,
registered in the United States and other
countries. Qualcomm® aptX™ is a product of
Qualcomm Technologies International, Ltd.
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