COS Engineering D10 User manual

COS D10
User’s Manual
V1.00
June, 20, 2020
COS D101

WELCOME
Thank you for choosing D10.
Please have a few minutes for this manual before powering D10 on.
COS D102

CONTENTS
COS D103
Unpacking 4
Placement 5
Mains Connection 6
Fuses 7
Digital Input 8
I2S 9
Streaming 10
Analog Input 19
Phono-Amplifier 20
Analog Output 21
Buffer selection 22
Selecting Input Source 23
Adjusting Volume Level 24
Standby Mode 25
Remote Control 26
Display 27
Headphone 28
Specifications 29

UNPACKING
COS D104
You will find in the D10 box the following:
A COS D10
a remote control
this manual
Please keep the D10 box. In an unlikely event that maintenance
is needed, the box shall be used for protection of D10 in transit.

PLACEMENT
COS D105
D10 needs a solid and stable surface to stand firmly, and four
boots should help keep it level. D10 does not need much air to
stay operational, but suffocating it is certainly a bad idea. Where
D10 is placed is not critical, but please keep it away from known
magnetic fields.

MAINS CONNECTION
COS D106
Before powering on, please make sure that the voltage selected, in the
Voltage Selection of the back panel, is the same as the AC outlet
voltage of your area. This switch is right below the AC inlet and can be
easily slid by a flat screw driver. Please ensure that it is slid all the way.

FUSES
COS D107
Two fuses are mounted in a holder, located in between the AC inlet and the
power switch. Use a pair of tweezers or the likes to press down and
release the lock. The holder will slide out. The inner one is in operation
whereas the outer one is a spare.
These fuses are 5 X 20 mm in size and rated for 1A, 250V AC, slow blow.
If replacement is needed, please use fuses with the right specification.
operation
spare
lock

DIGITAL INPUT
COS D108
There are 5 or 6 digital input as follows.
1. USB Audio (USB Type B connector)
2. AES digital input (XLR connector, 110ohm)
3. S/PDIF Input (BNC connector, 75ohm)
4. Optical Input (Toslink)
5. I2S Input (differential, HDMI connector)
Streaming with streaming module (optional)
1
2
3
4
5XLR
BNC USB
I2S
Optical
Buffer
on
off

I2S
COS D109
These I2S signals are differential (LVDS compliant) and the pin
assignments are as follows,
1. Data+
3. Data-
4. BCLK+
6. BCLK-
7. LRCLK+
9. LRCLK-
10. MCLK+
12. MCLK-
13~16. no connection
2, 5, 8, 11,17, 19. Ground
18. +5V
1
2
19
18

STREAMING
COS D1010
It takes ~30 seconds to boot up the streaming module, the “STREAM” sign
on the display keeps flashing in the process and beams steadily when done.
Ethernet connector
LED on the left (Green) : blinks when data flow through or are trying to.
LED on the right : Amber for 100 Mbps, off for 10Mbps.
WiFi LED
On, WiFi module connected
Flashing (1 sec off – 1 sec on), AP mode
USB connector for WiFi module
ETHERNET BUTTON
WiFi LED
WiFi
Module

STREAMING
COS D1011
mconnect control is a free control app, available for iOS and
Android, to
Set up streaming module
Access internet music (TIDAL, Qobuz and others)

STREAMING - Ethernet
COS D1012
Connect the D10 with the access point by an Ethernet cable
Connect your smart phone to the same network
Run “mconnect control” to configure the streaming module
ETHERNET BUTTON
WiFi LED
WiFi
Module

STREAMING - Ethernet
COS D1013
Please follow the steps shown below. “Converse COS D10” is the
third and the last step. If D10 fails to be on the list, please press the
refresh icon. If it is of no avail, please check cable connections and
try again.

STREAMING - Ethernet
COS D1014
Select D10 -> change LAN IP

STREAMING – WiFi setup
COS D1015
Please press and hold the button next to the WiFi module for 2~5
seconds.
The WiFi LED starts flashing for about 30 seconds.
Then the streaming module functions as an access point, with a network
name “CDMCM-210”
Now turn to your smart phone,
Go to the “WiFi” settings, select “CDMCM-210”
Key in password “password”
BUTTON

STREAMING – WiFi setup
COS D1016
Run “Mconnect control”
“Device setup”
“WiFi Network Selection”
Choose your own network
Type in password
The module now reboots and connects to your network.
Go to “WiFi” settings on your smart phone and select your own
network

STREAMING – ROON & MQA
COS D1017
D10 is ROON Ready and no setup is needed.
MQA decoding relies on the streaming module.

MQA (Master Quality Authenticated)
COS D1018
D10 includes MQA technology, which enables you to play back MQA
audio files and streams, delivering the sound of the original master
recording. ‘MQA’ or ‘MQA.’ indicates that the product is decoding and
playing an MQA stream or file, and denotes provenance to ensure
that the sound is identical to that of the source material. ‘MQA.’
indicates it is playing an MQA Studio file, which has either been
approved in the studio by the artist/producer or has been verified by
the copyright owner.

MQA and the Sound Wave Device are registered trade marks of MQA Limited.© 2016

ANALOG INPUT
COS D1019
There are two analog inputs, plus one optional.
Balanced Analog Input (XRL female connector pair)
Pin 1: Signal ground
Pin 2: Signal + (non-inverting)
Pin 3: Signal – (inverting)
Connector ground lug: chassis ground
Unbalanced Analog Input (RCA connector pair)
Phono-cartridge input with Phono-amplifier module (optional)
Analog Input Analog InputAnalog Output
Right Left

PHONO AMPLIFIER
COS D1020
There are three things to be taken care of,
Gain : 40, 50 or 60 dB (by setting of two switches)
Loading resistance
The default resistance is 47Kohm (switches 1 to 5 are positioned downward).
5 resistors ranging from 470 to 22 ohm can be enabled.
These resistors are in parallel. For example, if 470 and 350 ohm are enabled, the overall resistance
will be 470 * 350/(470 + 350) = 200 ohm
Loading capacitance
The default capacitance is 0 (switches 6 to 8 are positioned downward).
3 capacitors ranging from 390 to 100 pF can be enabled.
These capacitors are in parallel. For example, if 390 and 100 pF are enabled, the overall resistance
will be 390 + 100 = 490pF
There is also a grounding post for turntable grounding.
Right Left
Gain Loading Grounding