All of us at Wadia would like to offer thanks and congratulations to you for purchasing the Wadia series 9
Decoding Computer System. We sincerely believe that your Wadia series 9 Decoding Computer System will
bring you many years of musical pleasure and satisfaction.
While every new owner is anxious to begin listening, we encourage you to take a few minutes to read and
familiarize yourself with the full capabilities of the Wadia series 9 Decoding Computer System.
Brief History
Wadia was originally founded in 1988, making it one of the first high-end audio companies dedicated to digital
audio. Wadia was formed by a group of engineers who were committed to using advanced digital technology to
improve the performance of digital audio equipment.
Wadia’s first product, the Wadia 2000 Decoding Computer, was a breakthrough. For many listeners it proved the
viability of the Compact Disc as a musically involving format. Since then Wadia has continued to develop new
methods and technology. Each product resulted in a new standard of performance for digital audio decoding.
Here is an abbreviated list of the technological innovations Wadia engineers have pioneered:
• First company to introduce an outboard Digital-to-Analog converter
• First company to develop an audio optimized upsampling digital filter
• First company to apply glass fiber-optics to home audio
• First company to recognize clock-jitter as a source of audible distortion
• First company to test and apply mechanical de-tuning to the development of audio
component chassis design
• First company to offer a CD perfect digital volume control
• First company to develop a Direct to Digital Amplifier - PowerDAC
• Patented DigiMaster™ upsampling algorithm, optimized for reproducing music
• SwiftCurrent™ zero-feedback current to voltage converter
• DirectConnect system to connect digital audio products directly to an amplifier
Although Wadia’s digital expertise and track record exceed those of any other audio company, technology alone
does not guarantee musical performance. Wadia designs are born of a delicate balance of technology shaped by
a passion for music.
Wadia is proud to introduce the Wadia series 9 Decoding Computer System, a breakthrough in sonic performance
and a strong statement of our years of dedication to music.
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seri es 9 Decoding Computer System
Overview
This manual covers the installation and operation of the complete Wadia series 9 Decoding Computer System.
There are three steps to a complete installation:
• Installation and configuration of the Wadia 931 Digital Controller
• Installation and configuration of the Wadia 922 Mono Decoding Computers
• Operation of the Wadia series 9 Decoding Computer System
How to Use this Manual
Included in this manual is all the information you need to completely install and operate the Wadia series 9
Decoding Computer System. For a complete set-up, we recommend that you follow the installation and operation
instructions from start to finish. If you already have experience installing, configuring, and operating Wadia
components, you can use the Quick Start section, and refer to the complete instructions where needed.
Inventory
Before proceeding, please check to make sure that you received all of the components that comprise
the Wadia series 9 Decoding Computer System. You should have received the following boxes:
Wadia 931 Digital Controller
• Accessory kit
• Remote control
• 1 Glass fiber cable, 10 feet long
• AC power cord (12 gauge)
• Three tip-toes with threaded studs
• Three steel coasters
• 1 BNC to RCA adapter
Wadia 922 Mono Decoding Computers (one per channel)
• Accessory kits
• 2 Glass fiber cables, 35 feet long
• AC power cord (12 gauge)
• Three tip-toes with threaded studs
• Three steel coasters
For a standard 2-channel set-up you should have 3 boxes and 3 accessory kits. If you did not receive all cartons,
contact your dealer before continuing.
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Quick Start
Unpacking and Placement
Unpack each of the cartons. Check each component for shipping damage and verify that the operating voltage
matches your local AC voltage. The Wadia 931 Digital Controller should be positioned near the source components,
the Wadia 922 Mono Decoding Computers should be placed near the amplifier or amplifiers.
Connections
Use the illustrations below and on the following page to connect the Wadia series 9 Decoding Computer
System. All rear-panel connectors are labeled. Input 1 on the 931 Digital Controller is configured for ClockLink.
If you are using a source component equipped with ClockLink, such as the Wadia 270 CD transport, connect it
to Input 1. Non-ClockLink sources should not be connected to ClockLink inputs. For instructions to configure
any input to turn ClockLink on or off, see Configurations on page 22.
Level Setting
The Maximum Output Level can be set to match the sensitivity of your loudspeaker, room size, and listening
preference. The Wadia 922 Mono Decoding Computers come shipped from the factory with the output level set
at 2 volts RMS. For instruction on how to configure the output voltage see Output Level Settings on page 13.
Operation
The Wadia 931 Digital Controller acts as the user-interface for the entire Wadia series 9 Decoding Computer
System and uses remote commands and operations that are similar to other Wadia products. For a full list of
instructions, refer to Operations on page 16.
ClockLink Cable
Data Cable
Wadia 931 Digital ControllerClockLink-Equiped Digital Source
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seri es 9 Decoding Computer System
Standard Configuration:
Step 1: Connect data output 1 from the Wadia 931 Digital Controller to the data input of the left channel
Wadia 922 Mono Decoding Computer.
Step 2: Connect ClockLink output 2 from the Wadia 931 Digital Controller to the ClockLink input of the left
channel Wadia 922 Mono Decoding Computer.
Step 3: Connect data output 3 from the Wadia 931 Digital Controller to the data input of the right channel
Wadia 922 Mono Decoding Computer.
Step 4: Connect ClockLink output 4 from the Wadia 931 Digital Controller to the ClockLink input of the right
channel Wadia 922 Mono Decoding Computer.
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Installation and Set-up
Unpacking
Carefully unpack your Wadia 931 Digital Controller and the two Wadia 922 Mono Decoding Computers. Inspect
the outside of the chassis for shipping damage. If you find any, report it to your dealer immediately.
Do not plug in the Wadia 931 Digital Controller if you see any signs of shipping damage.
Please save all packing materials so the unit can be easily and safely shipped if the need arises.
Placement
Wadia 931 Digital Controller
Much like an analog preamplifier, the Wadia 931 Digital Controller should be centrally located near your
source components. Because the Wadia 931 Digital Controller is connected to the Wadia 922 Mono Decoding
Computers via glass fiber cabling, there is no advantage to placing it nearby these units.
Wadia 922 Mono Decoding Computers
The Wadia 922 Mono Decoding Computers should be placed as near to the amplifier or amplifiers as possible.
This will allow you to use shorter interconnecting cables thereby maximizing system performance.
AC Power
Please check to see what AC line voltage your unit is set for. Connecting to any voltage other than that specified
on the back panel will result in damage that is not covered by the warranty.
We recommend that you do not turn on the AC power until you have completed all connections between the
components of your system.
Installing the Tip-Toes
Screw one of the tip-toes under each of the three recesses in the bottom of the Wadia 931 Digital Controller and
both of the Wadia 922 Mono Decoding Computers. If the surface on which you intend to place the Wadia 931
Digital Controller is susceptible to damage, make sure to place one of the steel coasters under each tip-toe.
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seri es 9 Decoding Computer System
Connecting the Wadia 931 to a Digital Source
The Wadia 931 Digital Controller has six digital inputs:
• 2 glass fiber (ST) - Input 1,2
• 2 SPDIF (BNC) – Input 3,4
• 1 plastic fiber (TOSLINK) – Input 5
• 1 AES/EBU (XLR) – Input 6
Note: Input One is factory-configured for a ClockLink enabled source, such as a Wadia 270 CD Transport.
Using a non-ClockLink source connected to a ClockLink input degrades the sonic performance. To
change the configuration of any input, see Configuring Inputs on page 26.
Any digital source with one of these types of outputs can be connected to the Wadia 931 Digital Controller. The
931 Digital Controller will automatically detect and lock on to any of the established digital audio transmission
formats — up to a 96 kHz sampling rate. For more information on cable types, see Choosing a Digital Cable on
page 14.
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Wadia Digital Sources with ClockLink
The Wadia 931 Digital Controller serves as the reference clock for your entire Wadia digital system. The Wadia
931 Digital Controller uses a ultra-stable Temperature-Controlled Crystal Oscillator (TCXO) as a master clock and
is further enhanced by a superior power supply.
The Wadia 931 Digital Controller has a ClockLink output for source components, such as a Wadia 270
CD Transport. To link the Wadia 270 CD transport, connect an ST glass fiber cable from the Wadia 931
Digital Controller‘s ClockLink output, located near the digital inputs, to the source component’s
ClockLink input.
ClockLink Cable
Data Cable
Wadia 931 Digital ControllerClockLink-Equiped Digital Source
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seri es 9 Decoding Computer System
Connecting the 931 and 922
Wadia 931 Digital Controller Outputs
There are nine outputs on the Wadia 931 Digital Controller. One is dedicated for ClockLink and can be used to
connect to a Clocklink enabled source. All of the other outputs can be configured as either ClockLink or Data
outputs. This allows the Wadia 931 Digital Controller to be used in a variety of system configurations. To change
the configuration of the outputs, see Configurations on page 24.
Wadia 931 Digital Controller digital outputs.
Wadia 922 Decoding Computer Inputs
The Wadia 922 Mono Decoding Computer has 2 inputs, both ST glass fiber, which comprise Wadia’s proprietary
Dual-fiber Digital Interface. As currently configured, this interface uses one for data (up to 96 kHz, 24-bit),
and one for clock.
Connect the two fiber cables from your Wadia 931 Digital Controller to the ClockLink and Data input.
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