Sonifex Pro Audio Streamers Instruction Manual

Pro Audio Streamers
User Handbook

Pro Audio Streamers User Handbook
This handbook is for use with the following products :
PS-SEND Audio to IP Streaming Encoder
PS-PLAY IP to Audio Streaming Decoder
PS-AMP IP to Speakers Streaming Decoder
©Sonifex Ltd, 2012
All Rights Reserved
Revision 1.03, July 2012
Sonifex Ltd, 61, Station Road, Irthlingborough,
Northants, NN9 5QE, England.
Tel: [phone]
Fax: [phone]
Email: [email protected].uk
Website: http://www.sonifex.co.uk
Information in this document is subject to change without notice and does not represent a commitment on the part of the
vendor. Sonifex Ltd shall not be liable for any loss or damage whatsoever arising from the use of information or any error
contained in this manual.
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including
photocopying, recording, information storage and retrieval systems, for any purpose other than the purchaser’s personal
use, without the express written permission of Sonifex Ltd. Unless otherwise noted, all names of companies, products
and persons contained herein are part of a completely ctitious adaptation and are designed solely to document the use of
Sonifex product.
PRO AUDIO STREAMERS USER HANDBOOK
PRO AUDIO STREAMERS USER HANDBOOK

Pro Audio Streamers User Handbook
CONTENTS
CONTENTS
Warranty i
Warranty and Liability i
Unpacking the Pro Audio Streamer iii
Returning the Warranty Card iii
Safety Information iv
Safety of Mains Operated Equipment iv
Voltage Setting Checks iv
Fuse Rating iv
Power Cable and Connection iv
Ordering the Correct Mains Lead vi
Installation Information vi
Atmosphere vi
Electromagnetic Radiation vi
WEEE & RoHS Directives - Sonifex Statement vii
Reporting Faults viii
Pro Audio Streamer Introduction 1
PS-SEND Audio to IP Streaming Encoder 2
Introduction 2
Front Panel Controls & Operation 3
POWER LED 3
Reset Button 3
Headphone Output & Volume Control 3
Rear Panel Connections and Operation 4
AES/EBU Balanced Digital Input 4
S/PDIF Unbalanced Digital Input 4
TOSLINK Unbalanced Digital Input 5
GPIO General Purpose Inputs 5
Ethernet Port 5
RS232 Serial Port 5
IEC Power Plug & Fuse 6
Technical Specication 6
PS-PLAY IP to Audio Streaming Decoder 8
Introduction 8
Front Panel Controls & Operation 9
POWER LED 9
Infra Red Receiver 9
Reset Button 9
USB Socket 9
Headphone Output & Volume Control 10
Rear Panel Connections and Operation 10
AES/EBU Balanced Digital Output 11
S/PDIF Unbalanced Digital Output 11
TOSLINK Unbalanced Digital Output 11
GPIO General Purpose Outputs 11
Ethernet Port 11
RS232 Serial Port 12
IEC Power Plug & Fuse 12
Technical Specication 12
PS-AMP IP to Speakers Streaming Decoder 14
Introduction 14
Front Panel Controls & Operation 14
POWER LED 14
Infra Red Receiver 14
Reset Button 15
USB Socket 15
Headphone Output & Volume Control 15
Speaker Terminals 16

Pro Audio Streamers User Handbook
CONTENTS
CONTENTS
GPIO General Purpose Outputs 16
Ethernet Port 16
RS232 Serial Port 17
IEC Power Plug & Fuse 17
Technical Specication 18
Webpage Interface 20
The Title Bar 21
The Data Section 22
The Help Box 22
The Status Box 22
Conguring The Pro Audio Streamer 22
How To Use Your Pro Audio Streamers 23
Point To Point Audio Send 23
How To Congure an STL Stream of 44.1kHz mp3 From PS-SEND To PS-PLAY Or PS-AMP 24
Using the PS-PLAY or PS-AMP as a USB Playout System 24
Advanced 25
Boot Modes 25
Advanced Section 26
PS-SEND 26
Unit Status 26
Sending Status 26
Analogue Peak Input Values 26
GPI Status 26
Basic Audio Settings 26
Input Source 26
Channel Mode 26
Encoding 26
Mono Quality (kbps) 27
Stereo Quality (kbps) 27
Streaming Mode 27
Stream Destination 27
Advanced Section 28
Network Settings 28
IP Address 28
Netmask 28
Gateway IP Address 29
Audio Settings 29
A/D Amplier Gain 29
MP3 Emphasis 29
MP3 Frame CRC 29
MP3 Bitreservoir Mode 29
MP3 Channel Mode Extension 29
MP3 Copyright Extension 29
MP3 Stream Type 29
Streaming Settings 29
Own Name 29
Control GPI 29
Active Open/Closed 29
Send Contact Closure Information 29
Trigger Level 30
Pre-trigger Start 30
Post-trigger Play 30
Buer Under Run Mode 30
Stream Packet Strategy 30
Radio Path 30
Icy-URL/ SIP user 30
Icy-Genre 30
Shoutcast Stream 30
Type Of Service/DSCP 30
SNMP Settings 31
Trap Target IP Address 31
Low Audio Level 31

Pro Audio Streamers User Handbook
CONTENTS
CONTENTS
High Audio Level 32
Trap Repeat 32
Silence Timeout 32
Control Settings 32
UDP Command Port 32
TCP Command Port 32
Web Server Port 32
Serial Settings 32
Baud Rate 32
Data Bits 32
Parity 32
Stop Bits 32
Destination IP 32
Destination Port 32
Security Page 32
Password 32
Ice/Shoutcast 32
Listening 32
PS-PLAY/PS-AMP 33
Unit Status 33
Current Play Status 33
URL Currently Playing 33
Shue 33
Repeat 33
Stream Address 33
Song Title – Artist/Station 33
Volume 33
Bit Rate 33
Buer Usage 33
Channel Output Values 33
GPO Relay Contact 33
Basic Settings 34
Streaming URLs 34
Supported Protocols And Audio Formats 34
M3U Play List Syntax 34
Other Play List Types 35
Http://URL Syntax 36
Playback Settings 36
Volume 36
Bass 36
Treble 36
Shue 36
USB Autoplay 37
Advanced Section 37
Network Settings 37
IP Address 37
Netmask 37
Gateway IP Address 37
Primary and Alternative DNS 37
DHCP Host Name 37
Web Server Port 37
HTTP Proxy URL 37
User Agent 37
Streaming Settings 38
Stream Check Period 38
Check Period Limit 38
RTP Delay 38
USB Backup 38
URL Behaviour 38
Refresh 38
Play List Fails 38
Playback Settings 39
Minimum And Maximum Volume 39
Balance 39

Pro Audio Streamers User Handbook
CONTENTS & FIGURES
CONTENTS & FIGURES
Priority Stream Settings 39
RTP Port 39
RTP Delay 39
Priority Message Volume 39
Triggered Play List 39
Serial Settings 39
Baud Rate 39
Data Bits 39
Parity 39
Stop Bits 39
Flow Control 39
I/O Settings 39
Reset Button Function 39
Control Output 1 40
Remote Management 40
SNMP Trap Receiver 40
Security 40
Factory Defaults 40
Update Function 40
Set Password 40
Old/New Password 40
Table A : Packing List. iii
Table B : Power Connections. v
Table C : Mains Lead Table. vi
Fig 2-1: PS-SEND Front Panel. 2
Fig 2-2: PS-SEND Power & Status LEDs 3
Fig 2-3: PS-SEND Reset Button. 3
Fig 2-4: PS-SEND Headphone Socket &
Volume Control. 3
Fig 2-5: PS-SEND Rear Panel. 4
Fig 2-6: PS-SEND XLR Analogue Inputs. 4
Fig 2-7: PS-SEND RCA Phono Analogue
Inputs. 4
Fig 2-8 PS-SEND AES/EBU Input. 4
Fig 2-9: PS-SEND S/PDIF Input. 4
Fig 2-10: PS-SEND TOSLINK Input. 5
Fig 2-11: PS-SEND GPIO RJ45. 5
Fig 2-12: PS-SEND ETHERNET Port. 5
Fig 2-13: PS-SEND RS-232 Serial Port. 5
Fig 2-14: PS-SEND IEC Power Plug & Fuse. 6
Fig 3-1: PS-PLAY Front Panel. 8
Fig 3-2: PS-PLAY Power & Status LEDs 9
Fig 3-3: PS-PLAY Infra Red Receiver. 9
Fig 3-4: PS-PLAY Reset Button. 9
Fig 3-5: PS-PLAY USB Socket. 9
Fig 3-6: PS-PLAY Headphone Socket,
Volume Control & Output Level Control. 10
Fig 3-7: PS-PLAY Rear Panel. 10
Fig 3-8: PS-PLAY Analogue Outputs 10
Fig 3-9: PS-PLAY RCA Phono Analogue
Outputs. 10
Fig 3-10: PS-PLAY AES/EBU Output. 11
Fig 3-11: PS-PLAY S/PDIF Output. 11
Fig 3-12: PS-PLAY TOSLINK Output. 11
Fig 3-13: PS-PLAY GPIO RJ45 11
Fig 3-14: PS-PLAY ETHERNET Port. 11
Fig 3-15: PS-PLAY RS-232 Serial Port. 12
Fig 3-16: PS-PLAY IEC Power Plug & Fuse. 12
Fig 4-1: PS-AMP Front Panel. 14
Fig 4-2: PS-PLAY Power & Status LEDs 14
Fig 4-3: PS-AMP Infra Red Receiver. 14
Fig 4-4: PS-AMP Reset Button. 15
Fig 4-5: PS-AMP USB Socket. 15
Fig 4-6: PS-AMP Headphone Socket,
Volume Control & Output Level Control. 15
Fig 4-7: PS-AMP Rear Panel. 16
Fig 4-8: PS-AMP GPIO RJ45. 16
Fig 4-9: PS-AMP ETHERNET Port. 16
Fig 4-10: PS-AMP RS-232 Serial Port. 17
Fig 4-11: PS-AMP IEC Power Plug & Fuse. 17
Fig 5-1: The PS-PLAY & PS-SEND
Webpage 20
Fig 5-2: The PS-AMP Webpage. 21
Table 7-1: MPEG Quality Table. 27
Table 7-2: Assured Forwarding Table. 31
Figures

Pro Audio Streamers User Handbook i
WARRANTY
WARRANTY
Warranty
Warranty and Liability
Important: the purchaser is advised to read this clause
(a) The Company agrees to repair or (at its discretion) replace Goods which are found to be
defective (fair wear and tear excepted) and which are returned to the Company within
12 months of the date of despatch provided that each of the following
are satised:
(i) notication of any defect is given to the Company immediately upon its
becoming apparent to the Purchaser;
(ii) the Goods have only been operated under normal operating conditions and
have only been subject to normal use (and in particular the Goods must have
been correctly connected and must not have been subject to high voltage or
to ionising radiation and must not have been used contrary to the Company’s
technical recommendations);
(iii) the Goods are returned to the Company’s premises at the Purchaser’s expense;
(iv) any Goods or parts of Goods replaced shall become the property of
the Company;
(v) no work whatsoever (other than normal and proper maintenance) has been
carried out to the Goods or any part of the Goods without the Company’s prior
written consent;
(vi) the defect has not arisen from a design made, furnished or specied by
the Purchaser;
(vii) the Goods have been assembled or incorporated into other goods only in
accordance with any instructions issued by the Company;
(viii) the defect has not arisen from a design modied by the Purchaser;
(ix) the defect has not arisen from an item manufactured by a person other than
the Company.
In respect of any item manufactured by a person other than the Company, the Purchaser
shall only be entitled to the benet of any warranty or guarantee provided by such
manufacturer to the Company.
(b) In respect of computer software supplied by the Company the Company does not
warrant that the use of the software will be uninterrupted or error free.
(c) The Company accepts liability:

ii Pro Audio Streamers User Handbook
WARRANTY
WARRANTY
(i) for death or personal injury to the extent that it results from the negligence of
the Company, its employees (whilst in the course of their employment) or its
agents (in the course of the agency);
(ii) for any breach by the Company of any statutory undertaking as to title, quiet
possession and freedom from encumbrance.
(d) Subject to conditions (a) and (c) from the time of despatch of the Goods from the
Company’s premises the Purchaser shall be responsible for any defect in the Goods
or loss, damage, nuisance or interference whatsoever consequential economic or
otherwise or wastage of material resulting from or caused by or to the Goods. In
particular the Company shall not be liable for any loss of prots or other economic
losses. The Company accordingly excludes all liability for
the same.
(e) At the request and expense of the Purchaser the Company will test the Goods to
ascertain performance levels and provide a report of the results of that test. The report
will be accurate at the time of the test, to the best of the belief and knowledge of the
Company, and the Company accepts no liability in respect of its accuracy beyond that
set out in Condition (a).
(f) Subject to Condition (e) no representation, condition, warranty or other term, express
or implied (by statute or otherwise) is given by the Company that the Goods are of
any particular quality or standard or will enable the Purchaser to attain any particular
performance or result, or will be suitable for any particular purpose or use under
specic conditions or will provide any particular capacity, notwithstanding that the
requirement for such performance, result or capacity or that such particular purpose or
conditions may have been known (or ought to have been known) to the Company, its
employees or agents.
(g) (i) To the extent that the Company is held legally liable to the Purchaser for any
single breach of contract, tort, representation or other act or default, the
Company’s liability for the same shall not exceed the Price of the Goods.
(ii) The restriction of liability in Condition (g)(i) shall not apply to any liability
accepted by the Seller in Condition (c).
(h) Where the Goods are sold under a consumer transaction (as dened by the Consumer
Transactions (Restrictions on Statements) Order 1976) the statutory rights of the
Purchaser are not aected by these Conditions of Sale.

Pro Audio Streamers User Handbook iii
WARRANTY
WARRANTY
Unpacking the Pro Audio Streamer
The Pro Audio Streamer is shipped with the following equipment. Please check your
packaging to ensure that you have all of the items below. If anything is missing, please
contact the supplier of your equipment immediately.
Item Quantity Quantity Quantity
PS-SEND PS-PLAY PS-AMP
IEC Mains lead 1 1 1
Handbook and warranty card 1 1 1
Infrared Remote 0 1 1
Table A : Packing List.
Each Pro Audio Streamer is shipped in protective packaging and should be inspected
for damage before use. Where an item is found to have transit damage, notify the carrier
immediately with all the relevant details of the shipment. Packing materials should be kept
for inspection and also for if the product needs to be returned.
Returning the Warranty Card
In order to register the date of purchase so that we can keep you informed of any design
improvements or modications, it is important to complete the warranty registration
document that is enclosed and return it to Sonifex Ltd in the UK, or register online at
www.sonifex.co.uk/register
For your own records you should write down the serial number (which can be found on the
rear of the Pro Audio Streamer or on the connector on the Pro Audio Streamer.
Serial Number ………………………………………

iv Pro Audio Streamers User Handbook
SAFETY INFORMATION
SAFETY INFORMATION
Safety Information
Safety of Mains Operated Equipment
This equipment has been designed to meet the safety regulations currently advised
in the country of purchase and it conforms to the safety regulations specied by
use of the CE Mark.
Warning : There are no user serviceable parts inside the equipment. If you should ever
need to look inside the unit, always disconnect the mains supply before removing the
equipment covers.
Voltage Setting Checks
The integral power supply is designed to accept a universal input of 85 to 264 VAC mains
input voltage. The safety specication of your Pro Audio Streamer complies with local
requirements and must be earthed through the mains connector.
Fuse Rating
The Pro Audio Streamer is supplied with a single fuse in the live conducting path of the
mains power input. For reasons of safety it is important that the correct rating and type of
fuse is used. Incorrectly rated fuses could present a possible re hazard, under equipment
fault conditions. The fuse rating for Pro Audio Streamers is:
85V - 264V AC operation - 1A 5 x 20mm SB
The active fuse is tted on the outside rear panel of the unit.
Power Cable and Connection
An IEC power connector is supplied with the Pro Audio Streamer which has a moulded plug
attached – this is a legal requirement. If no moulded plug has been supplied with your Pro
Audio Streamers, please contact your supplier, because an IEC connector is always supplied
from the Sonifex factory.
If for any reason, you need to use the Pro Audio Streamer with a dierent power cable, you
should use the following wiring guidelines

Pro Audio Streamers User Handbook v
SAFETY INFORMATION
SAFETY INFORMATION
Wire Colour Connection
Green, or green and yellow Earth (E)
Blue, or Black Neutral (N)
Brown, or Red Live (L)
Table B : Power Connections.
Connect the equipment in accordance with the connection details and before applying
power to the unit, check that the machine has the correct operating voltage for your mains
power supply.
Important Note : The terminal marked on the rear panel must be earthed.

vi Pro Audio Streamers User Handbook
Ordering the Correct Mains Lead
When ordering a Pro Audio Streamer from Sonifex, it is helpful if you can specify your
required operating voltage and mains lead. After the product code add:
UK, for 230V, UK 3 pin to IEC lead
EC, for 230V, European Schuko 2 pin to IEC lead
US, for 115V, 3 pin to IEC lead
AU for 230V, Australasian 3 pin to IEC lead
Table C : Mains Lead Table.
E.g. order PS-SEND UK for a UK IEC lead to be supplied for a PS-SEND.
Installation Information
Atmosphere
The units should be installed in an area that is not subject to excessive temperature
variation (<0°C, >50°C), moisture, dust or vibration.
Electromagnetic Radiation
The cover is connected to earth by means of the xing screws. It is essential to maintain
this earth ground connection to ensure a safe operating environment and provide
electromagnetic shielding.
SAFETY INFORMATION
SAFETY INFORMATION

Pro Audio Streamers User Handbook vii
WEEE & RoHS Directives - Sonifex Statement
The Waste Electrical and Electronic Equipment (WEEE) Directive was agreed on
13 February 2003, along with the related Directive 2002/95/EC on Restrictions
of the use of certain Hazardous Substances in electrical and electronic
equipment (RoHS).
The Waste Electrical and Electronic Equipment Directive (WEEE) aims to minimise the
impacts of electrical and electronic equipment on the environment during their life times
and when they become waste. It applies to a huge spectrum of products. It encourages
and sets criteria for the collection, treatment, recycling and recovery of waste electrical and
electronic equipment. All products manufactured by Sonifex Ltd have the WEEE directive
label placed on the case. It gives a contact for individuals who are unsure about the correct
procedure when the product has reached its “end of use”.
Sonifex Ltd will be happy to give you information about local organisations that can
reprocess the products, or alternatively all products that have reached “end of use”can be
returned to Sonifex and will be reprocessed correctly free of charge.
Sonifex Ltd has phased out the use of certain hazardous substances identied in the
European Union’s Restriction of Hazardous Substances (RoHS) directive. The RoHS directive
limits the use of certain hazardous substances currently used in EEE manufacture, including
lead, mercury, cadmium, hexavalent chromium, and halide-containing compounds PBB
(polybrominated biphenyl) and PBDE (polybrominated diphenyl ether). Elimination of these
substances will result in more environmentally friendly recycling of electronic equipment.
For the products which Sonifex manufacture, the main area where products were aected
was in the use of lead for manufacturing and assembling electronics circuit boards.
Sonifex Ltd practices lead-free (LF) manufacturing processes. LF solder is used on the
surface-mount PCB manufacturing processes and for hand soldering. The printed circuit
boards (PCBs) used are either gold plated, or immersion tin plated, both of which use no
lead. Historically the PCBs were hot air solder levelled (HASL) PCBs which used tin/lead
based solder.
The manufacturing processes include the assembly of purchased components from various
sources. Product is oered as RoHS compliant, or LF, only after sucient evidence is received
from the component manufacturers that their components are RoHS compliant. Sonifex
Ltd relies solely on the distributor, or manufacturer, of the components for identication of
RoHS compliance. Thus whilst every eort is made to ensure compliance, Sonifex Ltd makes
no warranty, or certication, or declaration of compliance concerning said components.
Sonifex Ltd denes“Lead Free” as pertaining to any product, which has been manufactured
by Sonifex Ltd using components which have been declared by the manufacturers as
“Lead Free”. All statements by Sonifex Ltd of RoHS compliance are based on component
manufacturer documentation.
SAFETY INFORMATION
SAFETY INFORMATION

viii Pro Audio Streamers User Handbook
REPORTING FAULTS
REPORTING FAULTS
Reporting Faults
Although this Sonifex product is manufactured to the highest standards, it is possible that
minor faults may appear in the equipment over its normal lifetime. If you nd any problems
with the Pro Audio Streamer, please contact your Sonifex distributor, or contact Sonifex
directly at the following address, or fax with a copy of this completed sheet :
To : From:
Sonifex Ltd, Name
61, Station Road, Position
Irthlingborough, Company
Northants. Address
NN9 5QE, UK
Tel : [phone] Tel
Fax : [phone] Fax
Email : [email protected].uk Email
For the Serial No. of your machine, see the
back panel of the Pro Audio Streamer units.
Pro Audio Streamer Serial No.
PS-SEND
PS-PLAY
PS-AMP
Please describe the error in as much detail as possible (for example what you were doing
when the problem occurred, what actually happened, etc)
Description of Pro Audio Streamers Error
Also, if you have any suggestions for additions or upgrades to the Pro Audio Streamer unit ,
we would like to hear what they are :
Additions That I Would Like to See

Pro Audio Streamers User Handbook 1
INTRODUCTION
INTRODUCTION 1
Pro Audio Streamer Introduction
The Pro Audio Streamers are a range of three IP to audio and audio to IP streamers which
have professional analogue and digital inputs and outputs. They allow audio to be
streamed around a building, wan or lan using IP audio and CAT5 cabling infrastructure.
Typical applications include:
t "TBCBDLVQ45-TUVEJPUPUSBOTNJUUFSMJOL
t 'PSBVEJPDPOöEFODFNPOJUPSJOHJOSFNPUFMPDBUJPOTTVDIBTBUBSBEJPUSBOTNJUUFSTJUF
t 'PSEJTUSJCVUJPOPGBVEJPBOENVTJDBSPVOEBCVJMEJOHTVDIBTGPSQBTTJOHBVEJPUP
speakers in a conference room.
t "TBOJOUFSOFUCBTFE*1NVTJDEJTUSJCVUJPOTZTUFN
t "TBUBOOPZQBHJOHPS*1CBTFEQVCMJDBEESFTTTZTUFN
t 'PSJOIPVTFBVEJPBQQMJDBUJPOTBOEEJTUSJCVUJPO
t 'PSTUSFBNJOHJOUFSOFUSBEJPJOCBSTBOEDMVCT
t 'PSSBEJPBOENVTJDDIBOOFMTJOIPUFMSPPNTEJTUSJCVUFEWJBBO*1OFUXPSL
t 'PSQMBZJOHBVEJPGSPNB1$BKVLFCPYBQQMJDBUJPOPSGSPNB64#TUJDL
There are three products in the range providing encoding/decoding and streaming:
The PS-SEND converts an audio input to an IP stream.
The PS-PLAY reads an IP stream and outputs to balanced and unbalanced audio line levels.
The PS-AMP reads an IP stream and outputs audio to stereo speakers.
There are versions of the product which are rackmountable in a 1U high chassis: PS-SENDS,
PS-PLAYS and PS-AMPS respectively. The functionality of the products is the same as the
non-rackmount versions.

2Pro Audio Streamers User Handbook
PSSEND AUDIO TO IP STREAMER
2PSSEND AUDIO TO IP STREAMER
PS-SEND Audio to IP Streaming Encoder
Introduction
The PS-SEND is a freestanding audio to IP converter which is also available in a 1U rack-
mount as the PS-SENDS. It receives audio from a number of user selectable external stereo
sources including balanced and unbalanced analogue audio, AES/EBU, S/PDIF & TOSlink
digital audio. Once an audio source is selected, the unit encodes the audio in real time and
sends it to the network as an encoded stream. The audio stream can be distributed over
an IP-based network to one or more PS-PLAY or PS-AMP units or other proprietary servers
such as those for Icecast or Shoutcast.
All the conguration settings for the unit are accessed via a local web-server built into
it. The type of encoding and the transport mechanism are dened by selecting the
connection from a pre-dened list. The PS-SEND encodes an audio source into an MP3
(from analogue or digital inputs), G.711 or PCM (from analogue inputs only) audio stream
using HTTP, RTP, raw UDP or raw TCP protocols, including multicast support and the
following encoder types are available: Mpeg1 & 2 Layer3, PM3 VBR (variable bit-rate), PCM
linear and A-law, U-law, with 8kHz-48kHz sample rates . The unit can congure its own
IP address using DHCP/BOOTP, IPzator or AutoIP. A readout of the set IP address can be
heard on every reset using SONICIP technology, if selected. Remote level monitoring is also
possible using SNMP traps.
Two red and green front panel LEDs indicate what state the unit is currently in, be it normal
operational mode or bootstrap mode, and also indicates the current network connection
status. A blue LED denotes power to the unit. The input being routed to the IP stream can
be monitored on the front panel ¼” (6.35mm) stereo jack socket in combination with a
headphone volume knob.
The rear panel has 2 x RJ45 connectors, one for the 10/100Mbit Ethernet interface and one
for GPI connections. The PS-SEND has 6 x GPIs which can be used to trigger the sending
of the audio stream and which can also be used to trigger remote events using an output
relay on the PS-PLAY and PS-AMP. There is a 9 way D-type RS232 serial connection for
control of the unit by automation systems and rmware updates. The unit can be remote
controlled via serial connection, TCP or UDP.
Power to the unit is via a universal supply 85V - 264V fused IEC mains socket.
Fig 2-1: PS-SEND Front Panel.

Pro Audio Streamers User Handbook 3
PSSEND AUDIO TO IP STREAMER
PSSEND AUDIO TO IP STREAMER 2
Front Panel Controls & Operation
All controls and indicators are located on the front panel.
POWER LED
When on this blue LED indicates that
the unit is powered.
STATUS LEDs
There are two LEDS, red and green,
which together indicate boot up errors
and when data is being sent. The LEDs
have the following meanings:
Red LED Green LED Status Description
Flashing On Boot Load The boot loader is running to start the unit.
Flashing
Continuously
Flashes 5
Times Boot Up The unit is attempting to congure an IP address.
On Flashes 5
Times Boot Up Error - the PS-SEND application programme is corrupted or there is an IP address conict.
On Flashes 3
Times Boot Up Error – the network hardware could not be initialised or the MAC address is corrupted.
O On Running The unit is running but not sending data.
O Flashing Running The unit is running and sending data.
Reset Button
The Reset button is used to restart the rmware and re-initialise
the unit. Please use this button in the unlikely scenario of unit
failure.
Headphone Output & Volume Control
The headphone output is a ¼” stereo jack socket,
designed to drive 150 mW into 32Ω to 600Ω
professional headphones. It is used to monitor
the currently selected input source.
The headphone output has its own volume
control and has a maximum output level of
+12dBu.
Fig 2-2: PS-SEND Power & Status LEDs
Fig 2-3: PS-SEND
Reset Button.
Fig 2-4: PS-SEND Headphone Socket &
Volume Control.

4Pro Audio Streamers User Handbook
PSSEND AUDIO TO IP STREAMER
PSSEND AUDIO TO IP STREAMER
2
Rear Panel Connections and Operation
All the audio connectors together with the ethernet, serial and GPI/O connectors are found
on the rear panel of the unit. All the audio connections are inputs on this unit.
Fig 2-5: PS-SEND Rear Panel.
Balanced Analogue Inputs
The two XLR 3 pin sockets used for the left and right channel
inputs are electronically balanced and have an impedance of
>10kΩ bridging. Each XLR has the following
connections:
Pin 1: Screen.
Pin 2: Phase.
Pin 3: Non-phase.
Unbalanced Analogue Inputs
The two left and right RCA inputs are unbalanced and have an impedance
of >20kΩ. Thay are connected as follows:
Pin: Signal
Ring: Screen
AES/EBU Balanced Digital Input
The stereo digital input XLR 3 pin socket has an impedance of 110Ω and
the following connections:
Pin 1: Screen
Pin 2: Phase
Pin 3: Non-phase
The signals on this connector should meet the IEC 60968 specication
S/PDIF Unbalanced Digital Input
The stereo S/PDIF input is an RCA phono connector and is typically used
for consumer digital audio. The S/PDIF inputs have an impedance of 75Ω.
Pin: Signal
Ring: Screen
Fig 2-9: PS-SEND S/PDIF
Input.
Fig 2-8 PS-SEND
AES/EBU Input.
Fig 2-6: PS-SEND XLR Analogue Inputs.
Fig 2-7: PS-SEND RCA Phono
Analogue Inputs.

Pro Audio Streamers User Handbook 5
PSSEND AUDIO TO IP STREAMER
PSSEND AUDIO TO IP STREAMER 2
TOSLINK Unbalanced Digital Input
The stereo TOSlink optical connector is an unbalanced S/PDIF input. This
is typically used for consumer digital audio.
GPIO General Purpose Inputs
An RJ45 connector is used for the GP inputs. The GPIs are used to control
the stream output and there are six in total. Only one is used at any one
time, which is chosen from the webpage interface. The input can be
congured as active open or active closed.
A ground reference is also supplied on Pin 8. Simply short the relevant
input pin to the DGND pin through a button or switch to register a press.
The pinout for the connector is as follows:
Pin 1: GPI1
Pin 2: GPI2
Pin 3: GPI3
Pin 4: GPI4
Pin 5: GPI5
Pin 6: GPI6
Pin 7: N/C
Pin 8: Digital Ground (DGND)
Ethernet Port
The 10/100Mbit ethernet port is a metallic RJ45 with embedded LEDs
which is used to connect the unit to an IP network. Any standard CAT5
cable can be used. There are two embedded indication LEDs which relay
the following information:
Green LED: Illuminates permanently when a Link has been established.
Yellow LED: On power up, ashes periodically while waiting for a
connection. Once a connection is established, it ashes whenever data is
throughput.
The connector is wired as follows:
Pin 1: Receive data+
Pin 2: Transmit data+
Pin 3: Transmit data+
Pin 6: Receive data-
Pin 5: Ground
All other pins are unused.
RS232 Serial Port
This is a 9 pin D-type socket which can be used to update the
rmware or send commands to the unit. The connections are as
follows:
Fig 2-11: PS-SEND
GPIO RJ45.
Fig 2-10: PS-SEND
TOSLINK Input.
Fig 2-13: PS-SEND
RS-232 Serial Port.
Fig 2-12: PS-SEND
ETHERNET Port.

6Pro Audio Streamers User Handbook
PSSEND AUDIO TO IP STREAMER
PSSEND AUDIO TO IP STREAMER
2
Pin 2: Transmit data
Pin 3: Receive data
Pin 5: Ground
All other pins are unused.
IEC Power Plug & Fuse
The IEC power plug is a universal ltered IEC,
continuously rated 85-264VAC @47-63Hz, max 10W.
The fuse socket is a where the anti-surge fuse 1A 20 x
5mm fuse is inserted. Please unplug the unit whenever
opening this cover.
Technical Specication
Analogue Inputs: 2 x XLR 3 pin (balanced)( L&R)
2 x RCA phono (unbalanced)( L&R)
Analogue Max Input Level: 18dBu XLR balanced
8dBu RCA phono unbalanced
Analogue Balanced 20kΩ
Input Impedance:
Analogue Input SNR: 74dB
Input THD: 0.02% Relative
Interchannel Isolation 80dB (Ref FSD)
(Cross Talk):
Digital Inputs: 1 x AES/EBU XLR 3 pin female
1 x S/PDIF RCA phono
1 x TOSLink optical input
Analogue Outputs: 1 x ¼ inch jack headphone socket
Headphones Output: Drives 150mW into 32Ω to 600kΩ stereo headphones
GPIs (General Purpose Inputs): 6 x GPIs, selectable via webpage control on RJ45 socket
Serial Port: 1 x 9 way D-type socket, used to send control commands
and update rmware
Ethernet Port: 1 x RJ45 socket. Remote control commands can be sent
via TCP or UDP as well as rmware updates.
Mains Input: Filtered IEC, 85 - 264VAC, 47 - 63 Hz,10W, max
Fuse Rating: Anti-surge fuse 1A 20 x 5mm
Fig 2-14: PS-SEND IEC
Power Plug & Fuse.