Wadia Digital CD Player S7I User Manual

Information & Operation Manual

Table of Contents

Preliminaries

Wadia Digital – A Brief History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Installation and Set-up

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Installing the Tip-Toes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Connecting to Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Connecting to AC Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Connecting Directly to a Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Using with a Preamplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Optimizing the Output Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Connecting Digital Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Choosing a Digital Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Frequently Asked Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

General Operation

Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Display Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Display Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Disc Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Remote Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Playback Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Menu Screen Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Digital Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Appendices

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Using Data Discs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Software License Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Environmental Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Thank You

All of us at Wadia would like to offer thanks and congratulations to you for purchasing the Wadia S7i Integrated

CD Player / Decoding Computer. We sincerely believe that your Wadia S7i Integrated CD Player / Decoding

Computer 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 this manual

and familiarize yourself with the full capabilities of the Wadia S7i Integrated CD Player / Decoding Computer.

If you are in a hurry to begin listening, please read the sections of this manual where the symbol at

right is shown.

Wadia Digital – A Brief History

Wadia Digital, founded in 1988, is one of the original companies dedicated to high performance digital audio

reproduction. Wadia was formed by a team of engineers from the Minneapolis based 3M Corporation (Minnesota

Mining and Manufacturing) who shared many years of experience in advanced digital telecommunications

research and development. In the early 1980’s, these engineers became intrigued by the emerging compact disc

technology. Disappointed with the sound quality of early CD players, they examined the workings and designs of

these early components and found them to be unsophisticated when compared with the technology available in

other areas of digital design. In response, they founded Wadia Digital – a company based on the philosophy of

applying advanced technology to improve the performance of digital audio components. Wadia’s first product, the

Wadia 2000 Decoding Computer, was an absolute breakthrough in digital audio. For many discerning listeners, it

proved that Digital Audio was a musically responsive, evolving, and engaging format.

Building on a tradition of excellence, Wadia continues to develop innovative technology; refining, listening,

engineering, and improving along the way. Since the Wadia 2000, new generations of industry-leading designs

have been introduced and embraced by listeners around the world. Each step of the way, Wadia has consistently

raised the standard for performance of Digital Audio playback.

Here is a brief list of the technological innovations the Wadia engineers have pioneered over the past 20 years:

• DigiMaster™ patented algorithm (filter optimized for reproducing music)

• ClockLink™ proprietary jitter reduction technology

• SwiftCurrent™ current to voltage conversion technology

• First outboard Digital-to-Analog converter

• First to apply glass fiber-optics to home audio

• First to recognize jitter as a source of audible distortion

• First to perfect digital volume control

• First high-end CD player competitive with expensive separates

• First company to provide bit perfect digital audio output from the iPod

Although Wadia’s digital expertise and track record exceed those of any 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 S7i Integrated CD Player / Decoding Computer, a breakthrough in sonic

performance and value, and a strong statement of our years of dedication to music.

S7i Integrated CD Player / Decoding Computer

Installation and Set-up

Unpacking

Use care in unpacking your Wadia S7i Integrated CD Player / Decoding Computer. Inspect it for any shipping

damage and call your dealer immediately if any is found.

Do not plug your Wadia S7i CD Player / Decoding Computer into an AC outlet if you find shipping damage.

We advise saving all packing materials so that the unit can be easily and safely shipped if the need arises.

Accessories

Provided with the Wadia S7i Integrated CD Player / Decoding Computer are the following accessories:

• AC power cord

• Four tip-toes with threaded studs

• Four steel coasters

• RCA/BNC adapter

• Remote Control

Do not tip the unit onto the back panel. This can damage input and/or output connectors.

Installing the Tip-Toes

With the unit still positioned on its side, screw one of the tip-toes into the bottom of each corner post.

Position the Wadia S7i Integrated CD Player / Decoding Computer where you would like it to reside in your

system. We recommend choosing a solid, non-resonant, level surface for best performance. If this surface is

susceptible to damage, place one of the steel coasters under each tip-toe.

Connecting to Your System

CHECK

VOLTAGE

HERE

Check to make sure your Wadia S7i CD Player/Decoding Computer has been manufactured for operation

at your AC line Voltage. Attempting to use the Player at any voltage other than the specified on the

rear of the unit may damage the unit. Damage caused by improper operation is not covered by warranty.

If the voltage specified is different from your AC voltage, contact your Wadia dealer.

Connecting to AC Power

We have designed your product with careful attention to every detail. We are extremely confident of the

performance obtained when your Wadia component is plugged directly into the wall with the power cord provided.

Your Wadia product has been designed with power conditioning, surge suppression and an extremely sophisticated

overall protection scheme. Externally sourced surge protectors, power conditioners, or aftermarket power cords

can be a mixed bag of benefits and limitations, particularly those which limit current and/or alter phase relationships

of the voltage and current (power factor) delivered to the Wadia product. In some cases, we have found aftermarket

products can be quite beneficial, while in other cases we have found that these products can actually degrade the

sonic performance. If you wish to experiment with any of these devices, work closely with your local dealer –

and most of all, trust your own ears.

Connecting Directly to a Power Amplifier

Avoid allowing static shocks to be applied to the inputs or outputs. To prevent static shocks, touch any grounded

surface, such as the Wadia S7i Integrated CD Player/Decoding Computer chassis, before connecting or removing

a cable. It is unlikely that a static shock will damage the unit, but it may cause the Wadia S7i Integrated CD

Player / Decoding Computer circuitry to “lock-up” (see Trouble Shooting: Lock-Up in the Appendices).

Inputs and outputs can be safely connected to the Wadia S7i Integrated CD Player / Decoding Computer

1. Before the unit is powered up

2. When the unit is in Relay-Mute mode

We strongly recommend that you use your Wadia S7i Integrated CD Player / Decoding Computer connected

directly to your power amplifier. Even if you purchased your Wadia S7i Integrated CD Player/Decoding Computer

with the intention of connecting it to your preamplifier, we suggest that you try direct connection to your amplifier.

Many listeners are surprised by the improvement in performance over even the most expensive preamplifiers.

To connect your Wadia S7i Integrated CD Player / Decoding Computer to a power amplifier, ensure that your

power amplifier is turned off then connect your analog interconnects from the Wadia S7i Integrated CD Player /

Decoding Computer analog outputs to the amplifier’s inputs.

Using with a Preamplifier

While the Wadia S7i Integrated CD Player / Decoding Computer was designed to be used without a preamplifier,

no compromises were made in its design that will prevent excellent operation in a conventional system with

a preamplifier. When using a preamplifier, set the volume control to its maximum level.

S7i Integrated CD Player / Decoding Computer

Optimizing the Output Level

Best performance is obtained when operating the Wadia Volume Control near the top of its range. If needed,

the maximum output level of your Wadia S7i Integrated CD Player / Decoding Computer can be adjusted to

match the overall sensitivity of your system so that the critical listening will take place with the volume control

operating near the top of its range.

The maximum output level of the Wadia S7i Integrated CD Player / Decoding Computer is adjustable by

means of a set of internal switches. The Wadia S7i Integrated CD Player / Decoding Computer is factory set to

accommodate the most common range of system sensitivity. If you find that your typical volume level during

critical listening is below 65 on the volume display, it will be advantageous to use a different setting. To change

the output level, consult your dealer.

Connecting to Other Digital Sources

The Wadia Integrated CD Player /Decoding Computer is equipped with digital inputs which can accept digital

signals from any of these established digital formats. (Input 1: Wadia USB, Input 2: Coaxial with BNC connector,

Input 3: Plastic-optical TOSLINK, Input 4: AES/EBU with XLR connector).

The Wadia Integrated CD Player /Decoding Computer digital inputs will decode any word length up to 24-bit,

and any of the standard digital audio sampling frequencies up to 96kHz.

Choosing a Digital Cable

The performance of any digital transmission method depends on the quality of the cable and the sophistication of

the transmitter and receiver. For example, a high quality coaxial cable can outperform a low quality AES/EBUcable.

A high quality AES/EBU cable will outperform a poorly implemented glass optical system. If you are using a

coaxial cable we recommend that you have the cable terminated with a BNC connector. This will provide higher

performance than an RCA connector. Your Wadia Integrated CD Player /Decoding Computer comes with an

RCA/BNC adapter that can be used for experimentation between different types of coaxial cable. Please note

that USB cables from different manufacturers can exhibit a broad range of performance levels. Regardless of

manufacturer, the length of USB cable can affect sound quality in significant ways, with shorter lengths always

sounding better than extremely long lengths.

Again, we highly recommend that you take advantage of your dealer’s experience and, most importantly, trust your ears.

All XLR-type inputs and outputs on the Wadia S7i Integrated CD Player / Decoding Computer, both digital and

analog, use the standard audio pin configuration:

Pin 1 - Ground

Pin 2 - Positive signal

Pin 3 - Negative signal

Frequently Asked Questions

Should I use a Balanced or Unbalanced connection?

If your amplifier has a true balanced input, we recommend you use the balanced analog output from your Wadia

S7i Integrated CD Player/Decoding Computer. All things being equal, properly implemented balanced (also called

differential) circuitry sounds better than unbalanced circuitry. The Wadia S7i Integrated CD Player/Decoding Computer

is a true balanced design. It generates the inverted signal in the digital domain and all subsequent processing is

done in balanced mode. Your Wadia S7i Integrated CD Player/Decoding Computer is designed to maintain many

of the advantages of true balanced design when using the unbalanced outputs. In addition, the Wadia S7i Integrated

CD Player / Decoding Computer output stage is capable of driving both types of outputs simultaneously.

Why should I bypass the Preamplifier?

A preamplifier is unnecessary when using your Wadia S7i Integrated CD Player / Decoding Computer. The Wadia

S7i Integrated CD Player / Decoding Computer provides all the necessary control functions of a preamp while

the signal is still in the digital domain. This avoids the sonic degradation caused by analog circuitry, switches,

and wire. The Wadia S7i Integrated CD Player / Decoding Computer output stage can drive any power amplifier

and any interconnects, even at very long lengths.

Does the Wadia Volume Control compromise resolution?

The Wadia S7i Integrated CD Player/Decoding Computer uses the latest generation of Wadia’s proprietary digital

volume control. The volume level can be varied in the digital domain by means of mathematical manipulation of

the signal, eliminating the distortion and noise that are inevitable with even the best analog volume controls. While

conventional thinking indicates that reducing the volume digitally can sacrifice low level resolution, Wadia has

created an innovative solution. Wadia’s patented digital filtering algorithm produces a 24 bit output rather than the

16 bits stored on the CD. This high-resolution signal is then used in the computations which in turn reduce the volume

level. This new signal is fed directly to the DAC chips. Through this innovative method, the Wadia S7i Integrated

CD Player / Decoding Computer maintains high resolution even at the lowest volume control settings.

Can I bypass the Wadia Volume Control?

Because the Digital Volume control does not include any analog circuitry, there is none to be bypassed. Even the

mathematical program step that performs the Digital Volume Control calculation is an integral part of the Wadia

DigiMaster filter algorithm and therefore cannot be bypassed. If you do not need the Wadia Volume Control, set

it to its maximum level of 100 on the display.

What about Analog Sources?

In order to fully realize the potential of this type of system, Wadia has a range of Analog-to-Digital converters.

Now it is possible to use analog sources, such as a tuner, tape deck, or even a turntable (in conjunction with a

suitable phono stage) in your system without using a conventional analog preamplifier. Consult your dealer for

more information on the Wadia Analog-to-Digital products.

Should I leave the Wadia S7i Integrated CD Player / Decoding Computer with the power on?

The Wadia S7i Integrated CD Player / Decoding Computer is designed to be left with the power on with no harm

or wear to the unit. All motors and laser circuitry turn off when the unit stops playing. If desired, the front dis-

play can be turned off (see Turning off the Display under Remote Operation). Leaving the power on allows

the circuitry to remain in thermally stable, which provides better performance and longer life. Careful listeners

will notice that the sound of the Wadia S7i Integrated CD Player / Decoding Computer will improve steadily after

the unit is powered up. A new unit will undergo more dramatic changes when power is applied for the first time.

If you turn off your Wadia S7i Integrated CD Player / Decoding Computer for more than an hour, you will find

that the unit will undergo similar, but less dramatic improvement once power is reapplied.

S7i Integrated CD Player / Decoding Computer

General Operation

Using the switch located directly above the AC power input, turn the switch to the ON position.

Front Panel Controls

The front panel of the Wadia S7i Integrated CD Player / Decoding Computer features basic controls that allow

you to operate basic functions without using the Remote Control.

Volume Up

Increase the volume by 1/2 dB.

Play/Next Track

This button will cause the unit

to advance to the next track

and begin playing.

Previous Track

This button will cause the unit

to move to the previous track

and begin playing.

Open/Close/Stop

If the drawer is open, pushing this

button will CLOSE the drawer.

Volume Down

Decreases the volume by 1/2 dB.

If the CD is playing, pushing this

button will STOP playing.

If the unit is not playing, pushing

this button will OPEN the drawer.

Example:

To open the drawer while the unit

is playing, push the button once to

stop and once more to open.

Display Features

Track

Time

Playback Options

Format

Volume

Transport Functions

Display Functions

The Wadia S7i Integrated CD Player / Decoding Computer features a large display screen. The top section shows

the status of the transport. The bottom of the display indicates preamp functions, as described below.

Turn-On Screen

This screen is displayed each time the Wadia S7i Integrated CD Player / Decoding Computer is powered-up. After

five seconds, the display will change to the Input screen with internal transport selected, then change again to

the Volume screen with the volume set to Zero.

S 7 i C D P l a y e r

Input Screen

The Input screen shows which input is currently selected. It also indicates whether ClockLink is engaged and the

sampling frequency. If there is no signal connected to the selected input, the display will read, “No Data.”

I n 1 :

U S B A u d i o

S7i Integrated CD Player / Decoding Computer

Status Screen

The Status screen indicates whether the status is Phase Normal or Inverted, and whether the CD was recorded

using digital high frequency emphasis.

Volume Screen

The Volume screen shows the right and left channel volume level. If the output is muted, the display will indicate

this by showing, “MUTE.”

During normal listening, the display will show the default screen

Changing Between Display Screens

Anytime a button is pressed, the Wadia S7i Integrated CD Player / Decoding Computer display automatically

switches to the appropriate screen to display the change. For example, pressing the balance controls on the

remote control will switch the S7i Integrated CD Player / Decoding Computer display to the Balance screen.

After five seconds, the display will return to the Volume screen.

Also, pressing the enter button will cause the display to change to the next screen. Repeatedly pressing the enter

button will cause the display to continue to change to successive screens (see the Menu Screen Map on page 16).

Disc Formats

The S7i Integrated CD Player / Decoding Computer will not only play CD's recorded in the Red Book CD standard

(including CD-R and CD-RW), but it also can play discs recorded in several of the other popular formats: MP3,

FLAC and WMA. The file format will display in the upper right hand corner of the display panel. If a disc with

multiple formats (hybrid disc) is inserted, it will display HYBD.

When you first load a MP3, FLAC or WMA encoded disc you will see the total track count along with a disc

time of “00:00”. When the S7i Integrated CD Player / Decoding Computer is playing data discs, the user may

skip tracks front and back with direct track access, using the number pad on the remote, available up to track

999. In addition, the time display options become non-operational, the S7i Integrated CD Player / Decoding

Computer will only display the time played on the track, not the time remaining for the track or the whole disc.

Remote Control Operation

The Wadia S7i Integrated CD Player / Decoding Computer remote control requires a CR3032 battery. The battery

should already be inside the remote. You will need to remove the plastic battery protector from the battery

chamber for the remote to work.

display

input

Balance Left-Right

Phase Invert / Enter

Program / Mode

Display On-Off

Input

phase

enter

mode

program

Repeat

Key Pad

Search Back

Stop / Volume Up

Track Back / Mute

Drawer Open-Close

Search Forward

Play

ꢀ

mute

Track Forward

Volume Down / Pause

Adjusting the Volume

Whenever the volume control buttons are pressed, the volume for both channels will be increased or decreased

by an increment of 1 on the display screen. The range of the volume control is from 1 to 100, with each step

representing 0.5 dB change in volume.

Adjusting the Balance

Relative volume of each channel can be adjusted via the balance control buttons on the remote. Pressing one

of the balance buttons increases the volume on that channel relative to the other by an increment of 0.2 on the

display. This corresponds to a 0.1dB change. The next time the button is pressed the opposite channel is decreased.

This way the overall volume level (the sum of the two channels) remains constant within 0.1dB.

S7i Integrated CD Player / Decoding Computer

Selecting an Input

The Wadia S7i Integrated CD Player / Decoding Computer has four digital inputs, plus the internal drive. Any of

the inputs can be selected from the remote control by pressing the input button. Each time the input button is

pressed, the next input is selected. For example, if you are listening to internal drive and you press the input

select, Input 1 will be selected, press it again, and Input 2 will be selected and so on. After Input 4, the list will

begin again with the internal drive.

Whenever you select a new input, the display will switch to the Input Screen.

Inverting Absolute Phase

The Wadia S7i Integrated CD Player / Decoding Computer has the ability to invert absolute phase in the digital

domain. Pressing the Phase Invert button

on the remote control will cause the Wadia S7i Integrated CD

Player / Decoding Computer to invert phase; pressing it again will switch the phase back to normal. If the Wadia

S7i Integrated CD Player / Decoding Computer is in Phase Invert mode, this will be indicated on the Input Screen

of the display.

Display On/Off

By pressing the Display On or Off button, the Wadia S7i Integrated CD Player / Decoding Computer display can

be turned off completely.

Mute Modes

The Wadia S7i Integrated CD Player / Decoding Computer has two mute modes that are automatically implemented

under different circumstances.

DSP-Software Mute

When the Mute button is pressed on the remote control, the Wadia S7i Integrated CD Player / Decoding

Computer’s DSP engine transmits a stream of zero signal level samples to the DAC section, which results in

zero output.

Output-Relay Mute

The Wadia S7i Integrated CD Player / Decoding Computer has a mute relay connection between the positive

and negative outputs, when this relay is engaged, it connects the positive output to the negative output,

reducing the output to zero. This relay, which produces an audible click when it engages or disengages, is

not in the music signal path. The mute relay is engaged:

• When the Wadia S7i Integrated CD Player/Decoding Computer detects AC input level below its minimum

operating range.

• Each time the Wadia S7i Integrated CD Player / Decoding Computer power switch is turned on.

• When the volume control is set to zero AND the mute button on the remote control is pressed. When

the Wadia S7i Integrated CD Player / Decoding Computer is in either Mute Mode, the Volume Screen will

indicate this by displaying the word, “MUTE.”

Direct Track Access

Use the number pad on the remote to directly access individual tracks.

TRACK BACK/FORWARD

SEARCH BACK/FORWARD

: Pressing these buttons allows access to the previous or next track on a CD.

: Pressing these buttons allows fast reverse or fast forward access through

a track. Pressing the PLAY button to resumes normal playback.

STOP : Pressing this button while a CD is playing stops PLAY.

PAUSE : Pressing this button, while a CD is playing, suspends PLAY. Pressing the PLAY button will resume

play at the point where the pause button was pressed.

PLAY : After a CD has been loaded, pressing this button plays the CD beginning with the first track.

REPEAT : This button controls two repeat modes: Repeat track and repeat all. Pressing the button once

will cause the individual track to repeat. Pressing the button a second time will cause the entire CD to

repeat continuously. A third button press returns the system to “no repeat” mode.

ENTER: See Configuring digital inputs and selecting an algorithm on page 16.

S7i Integrated CD Player / Decoding Computer

Theory of Operation

Using ClockLink with an External Processor

ClockLink eliminates jitter added when the clock signal is recovered from the digital data stream. In a

non-ClockLink system, jitter is added when the clock signal is embedded in the data stream and transmitted

to the DAC. When the clock signal is recovered from the data stream (as shown below), and used to clock

the DAC output, this jitter degrades the sonic performance.

Data and Clock to DAC

Transport

DAC

Jitter Added

Conventional CD Player

With ClockLink, the clock is not recovered from the data. Instead, the master clock is located at the DAC. This

clock signal is transmitted to the transport to keep it synchronized with the DAC. Because the recovered clock is

ignored, any jitter on that signal does not affect the sonic performance.

Data to DAC

Transport

DAC

Clock to Transport

CD Player with ClockLink

Digital inputs and outputs can be used with a digital signal processor such as a digital equalizer. Digital processors

allow the signal to be modified without adding analog noise and distortion. However, digital processors can add

jitter, as shown below, causing noticeable sonic degradation.

Data and Clock to DAC

Digital

Processor

Digital

Output

Digital

Input

Jitter Added

Transport

DAC

Conventional CD Player with an External Digital Processor

Using ClockLink with an external processor, the Wadia S7i Integrated CD Player / Decoding Computer ignores

the incoming clock and uses the master oscillator at the DAC. As a result, jitter added by the external digital

processor does not affect sonic performance.

Data to DAC

Digital

Processor

Digital

Output

Digital

Input

Transport

DAC

Clock to Transport

CD Player with ClockLink with an External Digital Processor

Configuring Digital Inputs for ClockLink

To utilize ClockLink with an external processor, the Wadia S7i Integrated CD Player / Decoding Computer digital

inputs must be configured for ClockLink as described below.

Use the Enter button to scroll through the display menus until you reach the configuration menu for the input

you wish to configure. Shown below is the configuration menu for Input 1:

Use the Volume Up or Volume Down button to change to ClockLink ON. Press the Mute button to save

the configuration.

Note: Using ClockLink with a source other than the internal transport will result in unpredictable,

degraded performance.

ClockLink should only be used when using an external processor which is being fed by the Wadia S7i Integrated

CD Player / Decoding Computer internal transport. For all other applications, inputs should be configured with

ClockLink OFF.

The Wadia S7i Integrated CD Player / Decoding Computer has several features to prevent ClockLink from being

engaged when it should not be. First, whenever the input signal is other than 44.1 kHz sampling frequency, the

Wadia S7i Integrated CD Player / Decoding Computer will automatically revert to recovered clock mode. Second,

if the internal transport is not running, the Wadia S7i Integrated CD Player / Decoding Computer will revert to

recovered clock mode.

Note: All inputs on the Wadia S7i Integrated CD Player/Decoding Computer are factory configured for

ClockLink OFF.

ClockLink Status Indication

When the Wadia S7i Integrated CD Player / Decoding Computer is operating in ClockLink mode, the Input screen

will indicate as shown below:

I n 1 :

U S B A u d i o

Even if an input is configured for ClockLink, the Status screen will only indicate ClockLink if it is currently

engaged. For example, if an input is configured for ClockLink, and the Wadia S7i Integrated CD Player /

Decoding Computer’s internal transport is turned off, then the display will not indicate ClockLink.

S7i Integrated CD Player / Decoding Computer

Menu Screen Map

Volume Screen

Enter

N+Enter

Balance Screen

Status Screen

Input Screen

Mute

Y+Enter

Digital Algorithms

In the Wadia S7i Integrated CD Player / Decoding Computer there are three user-selectable digital algorithms

that can be used to optimize the sonic performance based on system matching and personal musical priorities.

The three algorithms in the Wadia S7i Integrated CD Player/Decoding Computer all upsample to 32x the input rate

(at 24 bit/1.4112 MHz DAC sample rate), but differ in their time and frequency domain characteristics. They are:

Algorithm A Digimaster v2.5. Wadia’s classic time-domain interpolation algorithm delivers a robust sound

with extraordinary image Focus and re-creation of recorded space.

Algorithm B Provides a more extended top end than Algorithm A, with superior time-domain performance

compared to conventional CD filters.

Algorithm C Retains the high frequency extension and superior detail resolution of Algorithm B, but with a