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How to use
Char ge the headphones.
Insert the supplied rechar ge able battery into the left housing of
the headphones.
Observe the correct polarity when installing ba ttery .
Connect the A/V c omponent using its headphone jack.
Set the volume of the A/V component as high as pos sible, but not so high that the audio signal bec omes
distorted.
Headphone
jack (Ster eo
mini jack)
TV , Digital music player , et c.
T urn on the A/V c omponent. W ear the headphones.
Befor e listening
T o reduc e the risk of hearing damage, first
lower the volume.
T actile dot
Checking the included items
T ransmitter TMR-RF810R (1) Headphones MDR-RF811R (1) AC adapt or (1) Rechargeable nick el-metal
hydride battery BP-HP550-11 (1)
Card warr anty (1)
Operating Instructions (this manual) (1)
English Wireles s Stereo Headphone S ystem
W ARNING
T o reduc e the risk of fire or electric shock, do not
expose this appar atus to rain or moistur e.
T o reduc e the risk of fire or electric shock, do not expose
this apparatus t o dripping or splashing, and do not place
objects filled with liquids, such as vases, on the apparatus.
Do not install the appliance in a c onfined space, such as a
bookcase or built -in cabinet.
As the main plug of AC power adapt or is used to
disconnect the A C power adaptor fr om the mains, connect
it to an easily acc essible AC outle t. Should you notice an
abnormality in it, disconnect it from the AC outle t
immediately .
CAUTION
Risk of explosion if the batt ery is replaced by an incorr ect
type.
Do not expose the ba tteries (battery pack or batteries
installed) to e xces sive heat such as sunshine, fire or the
like for a long time .
Do not subject the batteries t o extr eme low temperatur e
conditions that may r esult in overheating and thermal
runaway .
Do not dismantle, open or shred sec ondary cells or
batteries.
Do not expose c ells or batteries to heat or fire. Avoid
storage in dir ect sunlight.
In the event of a cell leaking, do not allow the liquid to
come in c ontact with the skin or eyes. If contact has been
made, wash the affected ar ea with copious amounts of
water and seek me dical advice.
Do not use any charger o ther than that specifically
provided f or use with the equipment.
Secondary cells and batt eries need to be charge d before
use. Always use the correct char ger and refer to the
manufacturer’ s instructions or equipment manual for
proper char ging instructions.
After ext ended periods of storage , it may be necessary to
charge and dischar ge the cells or batteries sever al times
to obtain maximum performanc e.
Dispose of properly .
High volume may affect your hearing.
The nameplate of tr ansmitter is locate d on the bottom
exterior .
The validity of the CE marking is restrict ed to only those
countries wher e it is legally enforc ed, mainly in the
countries EEA (Eur opean Economic Area) and S witzerland.
Hereby , Sony Corporation declar es that this equipment is
in complianc e with Directive 2014/53/EU .
The full text of the EU declar ation of conformity is
available at the following int ernet addres s:
http://www .compliance.sony .de/
Hereby , Sony Corporation declar es that this equipment is
in complianc e with the UK relevant statut ory
requir ements. The full text of the declaration of c onformity
is available at the following int ernet addres s:
https://complianc e.sony .co.uk
Disposal of waste batt eries and
electrical and electr onic equipment
(applicable in the Eur opean Union and
other countries with separ ate collection
systems)
This symbol on the product, the battery or
on the packaging indicat es that the product and the
battery shall not be trea ted as household waste . On
certain batteries this symbol might be use d in
combination with a chemic al symbol. The chemical
symbol for lead (Pb) is added if the battery cont ains more
than 0. 004% lead. By ensuring that these products and
batteries ar e disposed of corre ctly , you will help to pr event
potentially negative c onsequences for the en vironment
and human health which could be caused by
inappropriat e waste handling. The recycling of the
materials will help to c onserve natural resour ces. In case
of products that f or safety , performance or data int egrity
reasons r equire a permanent c onnection with an
incorpor ated batt ery, this battery should be replac ed by
qualified service staff only . T o ensure that the battery and
the electrical and electr onic equipment will be treat ed
properly , hand over these products at end-of-life to the
appropriat e collection point for the r ecycling of electrical
and electronic equipment. For all other ba tteries, please
view the section on how to remove the ba ttery from the
product safely . Hand the battery over to the appropriate
collection point for the r ecycling of waste batteries. For
more det ailed information about re cycling of this product
or battery , please c ontact your local Civic Office , your
household waste disposal service or the shop wher e you
purchased the pr oduct or battery .
Notice f or customers: the following information is only
applicable to equipment sold in c ountries applying EU
directives and/or UK applying r elevant statutory
requir ements
This product has been manuf actured by or on behalf of
Sony Corpor ation.
EU and UK Importer: Sony Europe B. V .
Inquiries to the EU Importer or rela ted to pr oduct
complianc e in Europe should be sent to the
manufacturer’ s authorized repr esentative, Sony Belgium,
bijkantoor van Sony Eur ope B. V ., Da Vincilaan 7 -D1, 19 30
Zaventem, Belgium.
Inquiries to the UK Importer or rela ted to pr oduct
complianc e in the UK should be sent to the manufacturer’ s
authorized r epresentative , Sony Europe B. V ., The Heights,
Brooklands, Weybridge , Surrey KT13 0XW , United Kingdom.
This equipment has been teste d and found to comply with
the limits set out in the EMC regula tion using a connection
cable shorter than 3 meters.
(Red) (Off )
Complet e when indicator
turns off.
After use
T ake off the headphones, then turn off the power.
About sending RF signals
The transmitter st arts sending RF signals automatically
when it detects an audio signal fr om the connecte d
component.
Notes
If hiss is heard, move closer to the transmitt er .
Y ou may hear some noise when you disconnect the
AC adapt or from the tr ansmitter before turn off the
headphones.
If no signal or low signal is input
for about 4 minut es
If the transmitter does no t detect an audio signal for
more than about 4 minutes, it will stop sending RF
signals, and the POWER indicat or will blink for 1 minute,
and then turn off.
When the transmitter r eceives an audio signal again, it
starts sending the RF signals, and the PO WER indicator
will light up green again.
Y ou may not hear the beginning of the sound from the
headphones until the transmitter st arts sending the RF
signals after detecting an audio signal.
RF signal transmis sion may stop when an extr emely low
sound is input for about 4 minutes. If this happens,
raise the volume of the c onnected A/V component
within the range wher e the sound is not distorted, and
lower the volume of the headphones.
Tips f or char ging
Char ge the headphones first
The supplied rechar geable nickel-metal hydride battery is
not charged fr om the first time you use them. Char ge
them before use .
If the tr ansmitter’ s POWER indic ator
does not light up r ed
Check if the switch on the left housing of the headphones
is set to OFF . If the switch is set to ON, the POWER
indicator does no t light up.
Y ou cannot char ge any rechar geable battery or dry battery
other than the supplied battery .
Char ging and usage time
Appro x. char ging time Appr ox. usage time1)
1 hour
16 hours2)
45 minutes3)
13 hours3)
1) at 1 kHz, 1 mW + 1 mW output
2) hours requir ed to fully charge an empty battery
3) Time may vary , depending on the t emperatur e or
conditions of use.
T o r echar ge supplied battery after
use
Connect the headphones to the CHARGE plug of the
transmitter aft er use. The POWER indicat or lights up red,
then charging starts.
When charging is c omplete, there is no need to r emove
the headphones from the tr ansmitter .
Remaining battery
T o check the remaining batt ery charge of the headphones,
turn on the switch locat ed on the left housing of the
headphone, and check the POWER indica tor locat ed on
the left housing. The battery is still ser viceable when the
indicator lights up r ed.
Charge the headphones if the PO WER indicator light dims,
flashes, or the sound becomes distorted or noisy .
Notes
Do not connect the CHARGE plug t o anything other
than these headphones.
The transmitter aut omatically stops sending RF signals
while charging the batt ery.
This system is designed to char ge only the supplied
rechar geable battery type BP-HP550-11 for safe ty . Not e
that other types of r echargeable battery canno t be
charged with this system.
If dry batteries are installed, they cannot be char ged.
Do not attemp t to use the supplied BP-HP550-11
rechar geable battery for other c omponents. They are
for use with this system only .
Charge in an envir onmental temper ature of between
0°C and 40 °C.
Tips f or volume setting
When watching videos, be careful not to r aise the volume
too high in quiet sc enes. Y ou may hurt your ears when a
loud scene is played.
T o set the input level
If the volume is high using the analogue input, set the A TT
(attenuat or) switch to “– 6 dB. ”
Setting Connected c omponents
0 dB TV , portable components and other
components with a low output level (initial
settings)
-6 dB Other components
Notes
Be sure to lower the volume bef ore setting the A TT
switch.
If audio input is distorted (sometimes, noise can be
heard at the same time), set the A TT switch to “– 6 dB. ”
Using the headphones
with separ at ely-sold dr y
batt eries
Commer cially available (LR03 (siz e AAA)) dry batteries can
also be used to power the headphones. Install two
batteries in the same manner as described in step 1 of
“How to use. ”
When dry batteries are installed, the battery charge
function is not activat ed.
Battery life
Battery Appro x. usage time1)
Sony alkaline battery LR03
(size AAA)
28 hours2)
1) at 1 kHz, 1 mW + 1 mW output
2) Time may var y , depending on the t emperatur e or
conditions of use.
Tips f or bett er r ecep tion
Receiving performanc e
This system utilizes very high fre quency signals in the 800
MHz band so the rec eiving performance may det eriorate
due to the surroundings. The following examples illustr ate
conditions that may r educe the r eception r ange or cause
interferenc e.
Inside a building with walls cont aining steel beams.
An area with many ste el file cabinets, etc.
An area with many electric al appliances capable of
generating ele ctromagnetic fields.
The transmitter is plac ed on a metal instrument.
An area facing a r oadway .
Noise or interfering signals exist in the surr oundings
due to radio tr ansceivers in trucks, etc.
Noise or interfering signals exist in the surr oundings
owing to wireles s communication syst ems installed
along roadways.
Effective ar ea of the tr ansmitter
The optimum distance is up t o appro ximately 100 m
without the system picking up some interfer ence.
However , the distanc e may vary depending on the
surroundings and envir onment.
If the system picks up some noise within the above
mentioned distance , reduc e the distance between the
transmitter and the headphones, or select another
channel.
When you use the headphones inside the effective ar ea
of the transmitter , the transmitter can be place d in any
direction fr om the listener .
Even within the signal r eception ar ea, there are some
spots (dead spots) wher e the RF signal cannot be
rec eived. This characteristic is inherent to RF signals,
and does not indicat e malfunction. By slightly moving
the transmitter , location of the dead spot can be
changed.
Replacing the earpads
The earpads are r eplaceable. If the earpads become dirty
or worn out, replace them as illustra ted below . The
earpads are not c ommercially available. Y ou can order
replac ements from the stor e where you purchase d this
system, or at your nearest Sony dealer .
1 Remove the old earpad by pulling it out of the groove
on the housing.
2 Place the new earpad on the driver unit.
Hang the edge of the earpad on one side of the driver
unit’s gr oove edge, then turn the e dge of earpad
around the driver unit as illustr ated below .
When the earpad is securely inserted int o the groove,
adjust the earpad to the vertical position.
T r oubleshooting
If you run into any problems using this syst em, use the
following checklist. Should any problem persist, consult
your nearest Sony dealer .
No sound/Low sound
T urn on the headphones.
Check the connection of the tr ansmitter and A/V
component, AC adaptor , and AC outlet.
Check that the A/V component is turne d on.
If you connect the tr ansmitter to the headphone jack of
an A/V component, raise the volume level on the
connecte d A/V component within the range wher e the
sound is not distorted.
Change the radio fr equency with the CHANNEL selector
on the transmitter , then change the radio frequency to
that of the transmitt er with the channel switch on the
headphones.
Charge the supplied r echargeable batt ery, or replace
dry batteries with new ones. If the POWER indicat or is
still off after charging, take the headphones to a Son y
dealer .
Distorted or intermitt ent sound
(sometimes with noise)
Use the headphones near the transmitter , or change
the position of the transmitter .
If you connect the tr ansmitter to an A/V c omponent
using the headphone jack, lower the volume level on
the connecte d A/V component within the range wher e
the sound is not distorted.
Change the radio fr equency with the CHANNEL selector
on the transmitter , then change the radio frequency to
that of the transmitt er with the channel switch on the
headphones.
Charge the supplied r echargeable batt ery, or replace
dry batteries with new ones. If the POWER indicat or is
still off after charging, take the headphones to a Son y
dealer .
Loud backgr ound noise
If you connect the tr ansmitter to the headphone jack of
an A/V component, raise the volume level on the
connecte d A/V component within the range wher e the
sound is not distorted.
Charge the supplied r echargeable batt ery, or replace
dry batteries with new ones. If the POWER indicat or is
still off after charging, take the headphones to a Son y
dealer .
Use the headphones near the transmitter .
The sound cuts off
The transmitter turns off if no signal or low signal is
input for 4 minutes. If you connect the tr ansmitter to an
A/V component using the headphone jack, raise the
volume level on the connecte d A/V component within
the range wher e the sound is not distorted.
Battery canno t be charged/
PO WER indicat or does not light up
re d
Install the supplied re chargeable nickel-me tal hydride
battery . Dry batteries and r echargeable batteries other
than the supplied cannot be char ged.
Check if the switch on the left housing of the
headphones is set to OFF . If the swit ch is set to ON, the
PO WER indicator does not light up .
Pr ecautions
Notes on the A C adaptor
Insert the AC adaptor plug firmly .
Be sure to use the supplied A C adaptor . Using AC
adaptors with differ ent plug polarity or other
characteristics c an cause product f ailure.
Unified
polarity plug
Be sure to alw ays use the supplied AC adapt or . Even A C
adaptors having the same voltage and plug polarity c an
damage this product due to the curr ent capacity or
other factors.
On power sour ces and plac ement
When this system is not to be used f or a long period of
time, disconnect the AC adapt or from the AC outle t
holding the plug, and remove the battery from the
headphones to avoid damage caused by batt ery
leakage and subsequent corr osion.
Do not leave this system in a loca tion subject to direct
sunlight, heat or moisture.
Avoid e xposure to temper ature extr emes, direct
sunlight, moisture, sand, dust or mechanical shock.
Specifica tions
T r ansmitter (TMR-RF810R)
Modulation FM ster eo
Operating fr equency
863. 0 MHz – 865.0 MHz
Maximum output power
< 4 mW
Channel Ch1, Ch2
Power sour ce DC 12 V: supplied AC adaptor
Audio input St ereo mini plug
Dimensions Appr ox. 108mm × 128mm × 108mm
(w/h/d)
Mass Appro x. 137 g
Rated power c onsumption
3 W
Headphones (MDR -RF811R)
Fre quency response
20Hz – 20, 000Hz
Power sour ce Supplied rechar geable nickel-metal
hydride battery BP-HP550-11 or
commer cially available (size AAA)
dry-cell batteries
Mass Appro x. 270 g (including the supplied
rechar geable nickel-metal h ydride
battery)
Rated power c onsumption
2 W
Design and specifications ar e subject to change without
notice .
T o AC outlet
Connect the A C
adaptor .
Insert the plug firmly .
Pres s and turn the lid counter clockwise. Match the terminals on
the battery to the marks
in the comportment.
Pres s and turn the lid clockwise.
7Adjust the volume.
T actile dot
If you cannot r eceive a cle ar audio signal
First change the radio fr equency with the CHANNEL selector switch
on the transmitter , then change the radio frequency to that of the
transmitter with the channel swit ch on the headphones.
The unit is not wat erproof. If water or f oreign objects enter
the unit, it may result in fire or electric shock. If water or a
foreign obje ct enters the unit, stop use immediately and
consult your near est Sony dealer . In par ticular , be car eful
in the following cases.
When using the unit around a sink, etc.
Be careful tha t the unit does not fall into a sink or
container filled with w ater .
When using the unit in the rain or snow , or in humid
locations
When using the unit while you are sweaty
If you touch the unit with wet hands, or put the unit in
the pocket of a damp article of clothing, the unit may
get wet.
Note on static electricity
Static electricity ac cumulated in the body may cause mild
tingling in your ears. T o reduce the effect, wear clothes
made from natur al materials, which suppress the
generation of st atic electricity .
For det ails on the effect of contact t o the human body
from the mobile phone or other wir eless devices
connecte d to the unit, refer to the instruction manual of
the wireless devic e.
This product (including ac cessories) has magnet(s) which
may interfere with pac emakers, programmable shunt
valves for hydr ocephalus treatment, or other medical
devices. Do not place this product close t o persons who
use such medical devices. Consult your doctor before
using this product if you use any such medic al device.
F eatur es
Thank you for purchasing the Son y MDR-RF811RK Wireless
Ster eo Headphone System. Before oper ating the unit,
please read this manual thor oughly and retain it f or future
refer ence.
Some featur es are:
Wireless syst em that allows you to listen to a
progr amme free fr om the restriction of a cor d.
High fidelity sound repr oduction.
13 hours of continuous use with supplied r echargeable
battery .
Easy connection with TV and HiFi Audio syst em
equipment.
Up to 100 metr es rec eption range.
V olume control function on the headphones.
Wir eless S ter eo
Headphone S ystem
Oper ating Instructions
4-529- 909-16 (1)
MDR-RF811RK
©2014 Sony Corpor ation Printed in China