Wadia 581 User manual

S7i Integrated CD Player / Decoding Computer
Information & Operation Manual

S7i Integrated CD Player / Decoding Computer

2
Information & Operation Manual
Table of Contents
Preliminaries
Wadia Digital A Brief History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installati n 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 Operati n
Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Display Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Display Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
DiscFormats ........................................................................10
Remote Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Playback Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Menu Screen Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
DigitalAlgorithms ....................................................................17
Appendices
Troubleshooting .....................................................................18
UsingDataDiscs ....................................................................18
SoftwareLicenseAgreement .........................................................18
EnvironmentalCare ..................................................................18
TechnicalSpecifications..............................................................19
SafetyPrecautions ..................................................................20

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Thank You
All of us at Wadia would lik to off r thanks and congratulations to you for purchasing th Wadia S7i Int grat d
CD Play r / D coding Comput r. W sinc r ly b li v that your Wadia S7i Int grat d CD Play r / D coding
Comput r will bring you many y ars of musical pl asur and satisfaction.
Whil v ry n w own r is anxious to b gin list ning, w ncourag you to tak a f w minut s to r ad this manual
and familiariz yours lf with th full capabiliti s of th Wadia S7i Int grat d CD Play r / D coding Comput r.
If you are in a hurry to begin istening, p ease read the sections of this manua where the symbo at
right is shown.
Wadia Digital – A Brief History
Wadia Digital, found d in 1988, is on of th original compani s d dicat d to high p rformanc digital audio
r production. Wadia was form d by a t am of ngin rs from th Minn apolis bas d 3M Corporation (Minn sota
Mining and Manufacturing) who shar d many y ars of xp ri nc in advanc d digital t l communications
r s arch and d v lopm nt. In th arly 1980’s, th s ngin rs b cam intrigu d by th m rging compact disc
t chnology. Disappoint d with th sound quality of arly CD play rs, th y xamin d th workings and d signs of
th s arly compon nts and found th m to b unsophisticat d wh n compar d with th t chnology availabl in
oth r ar as of digital d sign. In r spons , th y found d Wadia Digital – a company bas d on th philosophy of
applying advanc d t chnology to improv th p rformanc of digital audio compon nts. Wadia’s first product, th
Wadia 2000 D coding Comput r, was an absolut br akthrough in digital audio. For many disc rning list n rs, it
prov d that Digital Audio was a musically r sponsiv , volving, and ngaging format.
Building on a tradition of xc ll nc , Wadia continu s to d v lop innovativ t chnology; r fining, list ning,
ngin ring, and improving along th way. Sinc th Wadia 2000, n w g n rations of industry-l ading d signs
hav b n introduc d and mbrac d by list n rs around th world. Each st p of th way, Wadia has consist ntly
rais d th standard for p rformanc of Digital Audio playback.
H r is a bri f list of th t chnological innovations th Wadia ngin rs hav pion r d ov r th past 20 y ars:
• 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 xp rtis and track r cord xc d thos of any audio company, t chnology alon do s
not guarant musical p rformanc . Wadia d signs ar born of a d licat balanc of t chnology shap d by a
passion for music.
Wadia is proud to introduc th Wadia S7i Int grat d CD Play r / D coding Comput r, a br akthrough in sonic
p rformanc and valu , and a strong stat m nt of our y ars of d dication to music.

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Installati n and Set-up
Unpac ing
Us car in unpacking your Wadia S7i Int grat d CD Play r / D coding Comput r. Insp ct it for any shipping
damag and call your d al r imm diat ly if any is found.
Do not p ug your Wadia S7i CD P ayer / Decoding Computer into an AC out et if you find shipping damage.
W advis saving all packing mat rials so that th unit can b asily and saf ly shipp d if th n d aris s.
Accessories
Provid d with th Wadia S7i Int grat d CD Play r / D coding Comput r ar th following acc ssori s:
• 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 pane . This can damage input and/or output connectors.
Installing the Tip-Toes
With th unit still position d on its sid , scr w on of th tip-to s into th bottom of ach corn r post.
Position th Wadia S7i Int grat d CD Play r / D coding Comput r wh r you would lik it to r sid in your
syst m. W r comm nd choosing a solid, non-r sonant, l v l surfac for b st p rformanc . If this surfac is
susc ptibl to damag , plac on of th st l coast rs und r ach tip-to .
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S7i Integrated CD Player / Decoding Computer

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Connecting to Your System
Check to make sure your Wadia S7i CD P ayer/ Decoding Computer has been manufactured for operation
at your AC ine Vo tage. Attempting to use the P ayer at any vo tage 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 vo tage specified is different from your AC vo tage, contact your Wadia dea er.
Connecting to AC Power
W hav d sign d your product with car ful att ntion to v ry d tail. W ar xtr m ly confid nt of th
p rformanc obtain d wh n your Wadia compon nt is plugg d dir ctly into th wall with th pow r cord provid d.
Your Wadia product has b n d sign d with pow r conditioning, surg suppr ssion and an xtr m ly sophisticat d
ov rall prot ction sch m . Ext rnally sourc d surg prot ctors, pow r condition rs, or aft rmark t pow r cords
can b a mix d bag of b n fits and limitations, particularly thos which limit curr nt and/or alt r phas r lationships
of th voltag and curr nt (pow r factor) d liv r d to th Wadia product. In som cas s, w hav found aft rmark t
products can b quit b n ficial, whil in oth r cas s w hav found that th s products can actually d grad th
sonic p rformanc . If you wish to xp rim nt with any of th s d vic s, work clos ly with your local d al r –
and most of all, trust your own ars.
Connecting Directly to a Power Amplifier
Avoid allowing static shocks to b appli d to th inputs or outputs. To pr v nt static shocks, touch any ground d
surfac , such as th Wadia S7i Int grat d CD Play r / D coding Comput r chassis, b for conn cting or r moving
a cabl . It is unlik ly that a static shock will damag th unit, but it may caus th Wadia S7i Int grat d CD
Play r / D coding Comput r circuitry to “lock-up” (s Trouble Shooting: Lock-Up in th Appendices).
Inputs and outputs can b saf ly conn ct d to th Wadia S7i Int grat d CD Play r / D coding Comput r
1. Before the unit is powered up
2. When the unit is in Relay-Mute mode
W strongly r comm nd that you us your Wadia S7i Int grat d CD Play r / D coding Comput r conn ct d
dir ctly to your pow r amplifi r. Ev n if you purchas d your Wadia S7i Int grat d CD Play r / D coding Comput r
with th int ntion of conn cting it to your pr amplifi r, w sugg st that you try dir ct conn ction to your amplifi r.
Many list n rs ar surpris d by th improv m nt in p rformanc ov r v n th most xp nsiv pr amplifi rs.
To conn ct your Wadia S7i Int grat d CD Play r / D coding Comput r to a pow r amplifi r, nsur that your
pow r amplifi r is turn d off th n conn ct your analog int rconn cts from th Wadia S7i Int grat d CD Play r /
D coding Comput r analog outputs to th amplifi r’s inputs.
Using with a Preamplifier
Whil th Wadia S7i Int grat d CD Play r / D coding Comput r was d sign d to b us d without a pr amplifi r,
no compromis s w r mad in its d sign that will pr v nt xc ll nt op ration in a conv ntional syst m with
a pr amplifi r. Wh n using a pr amplifi r, s t th volum control to its maximum l v l.
CHECK
VOLTAGE
HERE
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Optimizing the Output Level
B st p rformanc is obtain d wh n op rating th Wadia Volum Control n ar th top of its rang . If n d d,
th maximum output l v l of your Wadia S7i Int grat d CD Play r / D coding Comput r can b adjust d to
match th ov rall s nsitivity of your syst m so that th critical list ning will tak plac with th volum control
op rating n ar th top of its rang .
Th maximum output l v l of th Wadia S7i Int grat d CD Play r / D coding Comput r is adjustabl by
m ans of a s t of int rnal switch s. Th Wadia S7i Int grat d CD Play r / D coding Comput r is factory s t to
accommodat th most common rang of syst m s nsitivity. If you find that your typical volum l v l during
critical list ning is b low 65 on th volum display, it will b advantag ous to us a diff r nt s tting. To chang
th output l v l, consult your d al r.
Connecting to Other Digital Sources
Th Wadia Int grat d CD Play r /D coding Comput r is quipp d with digital inputs which can acc pt digital
signals from any of th s stablish d digital formats. (Input 1: Wadia USB, Input 2: Coaxial with BNC conn ctor,
Input 3: Plastic-optical TOSLINK, Input 4: AES/EBU with XLR conn ctor).
Th Wadia Int grat d CD Play r /D coding Comput r digital inputs will d cod any word l ngth up to 24-bit,
and any of th standard digital audio sampling fr qu nci s up to 96kHz.
Choosing a Digital Cable
Th p rformanc of any digital transmission m thod d p nds on th quality of th cabl and th sophistication of
th transmitt r and r c iv r. For xampl , a high quality coaxial cabl can outp rform a low quality AES/EBUcabl .
A high quality AES/EBU cabl will outp rform a poorly impl m nt d glass optical syst m. If you ar using a
coaxial cabl w r comm nd that you hav th cabl t rminat d with a BNC conn ctor. This will provid high r
p rformanc than an RCA conn ctor. Your Wadia Int grat d CD Play r /D coding Comput r com s with an
RCA/BNC adapt r that can b us d for xp rim ntation b tw n diff r nt typ s of coaxial cabl . Pl as not
that USB cabl s from diff r nt manufactur rs can xhibit a broad rang of p rformanc l v ls. R gardl ss of
manufactur r, th l ngth of USB cabl can aff ct sound quality in significant ways, with short r l ngths always
sounding b tt r than xtr m ly long l ngths.
Again, w highly r comm nd that you tak advantag of your d al r’s xp ri nc and, most importantly, trust our ears.
All XLR-typ inputs and outputs on th Wadia S7i Int grat d CD Play r / D coding Comput r, both digital and
analog, us th standard audio pin configuration:
Pin 1 - Ground
Pin 2 - Positive signal
Pin 3 - Negative signal
S7i Integrated CD Player / Decoding Computer

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Frequently As ed Questions
Shou d I use a Ba anced or Unba anced connection?
If your amplifi r has a tru balanc d input, w r comm nd you us th balanc d analog output from your Wadia
S7i Int grat d CD Play r / D coding Comput r. All things b ing qual, prop rly impl m nt d balanc d (also call d
diff r ntial) circuitry sounds b tt r than unbalanc d circuitry. Th Wadia S7i Int grat d CD Play r /D coding Comput r
is a tru balanc d d sign. It g n rat s th inv rt d signal in th digital domain and all subs qu nt proc ssing is
don in balanc d mod . Your Wadia S7i Int grat d CD Play r / D coding Comput r is d sign d to maintain many
of th advantag s of tru balanc d d sign wh n using th unbalanc d outputs. In addition, th Wadia S7i Int grat d
CD Play r / D coding Comput r output stag is capabl of driving both typ s of outputs simultan ously.
Why shou d I bypass the Preamp ifier?
A pr amplifi r is unn c ssary wh n using your Wadia S7i Int grat d CD Play r / D coding Comput r. Th Wadia
S7i Int grat d CD Play r / D coding Comput r provid s all th n c ssary control functions of a pr amp whil
th signal is still in th digital domain. This avoids th sonic d gradation caus d by analog circuitry, switch s,
and wir . Th Wadia S7i Int grat d CD Play r / D coding Comput r output stag can driv any pow r amplifi r
and any int rconn cts, v n at v ry long l ngths.
Does the Wadia Vo ume Contro compromise reso ution?
Th Wadia S7i Int grat d CD Play r / D coding Comput r us s th lat st g n ration of Wadia’s propri tary digital
volum control. Th volum l v l can b vari d in th digital domain by m ans of math matical manipulation of
th signal, liminating th distortion and nois that ar in vitabl with v n th b st analog volum controls. Whil
conv ntional thinking indicat s that r ducing th volum digitally can sacrific low l v l r solution, Wadia has
cr at d an innovativ solution. Wadia’s pat nt d digital filt ring algorithm produc s a 24 bit output rath r than th
16 bits stor d on th CD. This high-r solution signal is th n us d in th computations which in turn r duc th volum
l v l. This n w signal is f d dir ctly to th DAC chips. Through this innovativ m thod, th Wadia S7i Int grat d
CD Play r / D coding Comput r maintains high r solution v n at th low st volum control s ttings.
Can I bypass the Wadia Vo ume Contro ?
B caus th Digital Volum control do s not includ any analog circuitry, th r is non to b bypass d. Ev n th
math matical program st p that p rforms th Digital Volum Control calculation is an int gral part of th Wadia
DigiMast r filt r algorithm and th r for cannot b bypass d. If you do not n d th Wadia Volum Control, s t
it to its maximum l v l of 100 on th display.
What about Ana og Sources?
In ord r to fully r aliz th pot ntial of this typ of syst m, Wadia has a rang of Analog-to-Digital conv rt rs.
Now it is possibl to us analog sourc s, such as a tun r, tap d ck, or v n a turntabl (in conjunction with a
suitabl phono stag ) in your syst m without using a conv ntional analog pr amplifi r. Consult your d al r for
mor information on th Wadia Analog-to-Digital products.
Shou d I eave the Wadia S7i Integrated CD P ayer / Decoding Computer with the power on?
Th Wadia S7i Int grat d CD Play r / D coding Comput r is d sign d to b l ft with th pow r on with no harm
or w ar to th unit. All motors and las r circuitry turn off wh n th unit stops playing. If d sir d, th front dis-
play can b turn d off (s Turning off the Display und r Remote Operation). L aving th pow r on allows
th circuitry to r main in th rmally stabl , which provid s b tt r p rformanc and long r lif . Car ful list n rs
will notic that th sound of th Wadia S7i Int grat d CD Play r / D coding Comput r will improv st adily aft r
th unit is pow r d up. A n w unit will und rgo mor dramatic chang s wh n pow r is appli d for th first tim .
If you turn off your Wadia S7i Int grat d CD Play r / D coding Comput r for mor than an hour, you will find
that th unit will und rgo similar, but l ss dramatic improv m nt onc pow r is r appli d.

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General Operati n
Using th switch locat d dir ctly abov th AC pow r input, turn th switch to th ON position.
Front Panel Controls
Th front pan l of th Wadia S7i Int grat d CD Play r / D coding Comput r f atur s basic controls that allow
you to op rat basic functions without using th R mot Control.
Previous Track
This button will caus th unit
to mov to th pr vious track
and b gin playing.
Open/Close/Stop
If th draw r is op n, pushing this
button will CLOSE th draw r.
If th CD is playing, pushing this
button will STOP playing.
If th unit is not playing, pushing
this button will OPEN th draw r.
Example:
To open the drawer while the unit
is pla ing, push the button once to
stop and once more to open.
Volume Down
D cr as s th volum by 1/2 dB.
Play/Next Track
This button will caus th unit
to advanc to th n xt track
and b gin playing.
Volume Up
Incr as th volum by 1/2 dB.
S7i Integrated CD Player / Decoding Computer

9
Display Features
Display Functions
Th Wadia S7i Int grat d CD Play r / D coding Comput r f atur s a larg display scr n. Th top s ction shows
th status of th transport. Th bottom of th display indicat s pr amp functions, as d scrib d b low.
Turn-On Screen
This scr n is display d ach tim th Wadia S7i Int grat d CD Play r / D coding Comput r is pow r d-up. Aft r
fiv s conds, th display will chang to th Input scr n with int rnal transport s l ct d, th n chang again to
th Volum scr n with th volum s t to Z ro.
Input Screen
Th Input scr n shows which input is curr ntly s l ct d. It also indicat s wh th r ClockLink is ngag d and th
sampling fr qu ncy. If th r is no signal conn ct d to th s l ct d input, th display will r ad, “No Data.”
Track Time Playback Options Format
Transport FunctionsVolume
S7i CD Player
I n 1 : U S B A u d i o

S7i Integrated CD Player / Decoding Computer
10
Status Screen
Th Status scr n indicat s wh th r th status is Phas Normal or Inv rt d, and wh th r th CD was r cord d
using digital high fr qu ncy mphasis.
Volume Screen
Th Volum scr n shows th right and l ft chann l volum l v l. If th output is mut d, th display will indicat
this by showing, “MUTE.”
During normal list ning, th display will show th d fault scr n
Changing Between Display Screens
Anytim a button is pr ss d, th Wadia S7i Int grat d CD Play r / D coding Comput r display automatically
switch s to th appropriat scr n to display th chang . For xampl , pr ssing th balanc controls on th
r mot control will switch th S7i Int grat d CD Play r / D coding Comput r display to th Balanc scr n.
Aft r fiv s conds, th display will r turn to th Volum scr n.
Also, pr ssing th nt r button will caus th display to chang to th n xt scr n. R p at dly pr ssing th nt r
button will caus th display to continu to chang to succ ssiv scr ns (s th Menu Screen Map on pag 16).
Disc Formats
Th S7i Int grat d CD Play r / D coding Comput r will not only play CD's r cord d in th R d Book CD standard
(including CD-R and CD-RW), but it also can play discs r cord d in s v ral of th oth r popular formats: MP3,
FLAC and WMA. Th fil format will display in th upp r right hand corn r of th display pan l. If a disc with
multipl formats (hybrid disc) is ins rt d, it will display HYBD.
Wh n you first load a MP3, FLAC or WMA ncod d disc you will s th total track count along with a disc
tim of “00:00”. Wh n th S7i Int grat d CD Play r / D coding Comput r is playing data discs, th us r may
skip tracks front and back with dir ct track acc ss, using th numb r pad on th r mot , availabl up to track
999. In addition, th tim display options b com non-op rational, th S7i Int grat d CD Play r / D coding
Comput r will only display th tim play d on th track, not th tim r maining for th track or th whol disc.

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Remote Control Operation
Th Wadia S7i Int grat d CD Play r / D coding Comput r r mot control r quir s a CR3032 batt ry. Th batt ry
should alr ady b insid th r mot . You will n d to r mov th plastic batt ry prot ctor from th batt ry
chamb r for th r mot to work.
Adjusting the Volume
Wh n v r th volum control buttons ar pr ss d, th volum for both chann ls will b incr as d or d cr as d
by an incr m nt of 1 on th display scr n. Th rang of th volum control is from 1 to 100, with ach st p
r pr s nting 0.5 dB chang in volum .
Adjusting the Balance
R lativ volum of ach chann l can b adjust d via th balanc control buttons on th r mot . Pr ssing on
of th balanc buttons incr as s th volum on that chann l r lativ to th oth r by an incr m nt of 0.2 on th
display. This corr sponds to a 0.1dB chang . Th n xt tim th button is pr ss d th opposit chann l is d cr as d.
This way th ov rall volum l v l (th sum of th two chann ls) r mains constant within 0.1dB.
123
456
78
0
mute
displayL R
program
phase enter
mode
input
M
I
M M
M M
S
M M
S
M
S
SS
M
M
9

S
Balance Left-Right
Phase Invert / Enter
Program / Mode
Key Pad
Search Back
Stop / Volume Up
Track Back / Mute
Drawer Open-Close
Display On-Off
Input
Repeat
Search Forward
Play
Track Forward
Volume Down / Pause

Selecting an Input
Th Wadia S7i Int grat d CD Play r / D coding Comput r has four digital inputs, plus th int rnal driv . Any of
th inputs can b s l ct d from th r mot control by pr ssing th input button. Each tim th input button is
pr ss d, th n xt input is s l ct d. For xampl , if you ar list ning to int rnal driv and you pr ss th input
s l ct, Input 1 will b s l ct d, pr ss it again, and Input 2 will b s l ct d and so on. Aft r Input 4, th list will
b gin again with th int rnal driv .
Wh n v r you s l ct a n w input, th display will switch to th Input Scr n.
Inverting Absolute Phase
Th Wadia S7i Int grat d CD Play r / D coding Comput r has th ability to inv rt absolut phas in th digital
domain. Pr ssing th Phas Inv rt button on th r mot control will caus th Wadia S7i Int grat d CD
Play r / D coding Comput r to inv rt phas ; pr ssing it again will switch th phas back to normal. If th Wadia
S7i Int grat d CD Play r / D coding Comput r is in Phas Inv rt mod , this will b indicat d on th Input Scr n
of th display.
Display On/Off
By pr ssing th Display On or Off button, th Wadia S7i Int grat d CD Play r / D coding Comput r display can
b turn d off compl t ly.
Mute Modes
Th Wadia S7i Int grat d CD Play r / D coding Comput r has two mut mod s that ar automatically impl m nt d
und r diff r nt circumstanc s.
DSP-Software Mute
Wh n th Mut button is pr ss d on th r mot control, th Wadia S7i Int grat d CD Play r / D coding
Comput r’s DSP ngin transmits a str am of z ro signal l v l sampl s to th DAC s ction, which r sults in
z ro output.
Output-Relay Mute
Th Wadia S7i Int grat d CD Play r / D coding Comput r has a mut r lay conn ction b tw n th positiv
and n gativ outputs, wh n this r lay is ngag d, it conn cts th positiv output to th n gativ output,
r ducing th output to z ro. This r lay, which produc s an audibl click wh n it ngag s or dis ngag s, is
not in th music signal path. Th mut r lay is ngag d:
• Wh n th Wadia S7i Int grat d CD Play r / D coding Comput r d t cts AC input l v l b low its minimum
op rating rang .
• Each tim th Wadia S7i Int grat d CD Play r / D coding Comput r pow r switch is turn d on.
• Wh n th volum control is s t to z ro AND th mut button on th r mot control is pr ss d. Wh n
th Wadia S7i Int grat d CD Play r / D coding Comput r is in ith r Mut Mod , th Volum Scr n will
indicat this by displaying th word, “MUTE.”
Direct Track Access
Us th numb r pad on th r mot to dir ctly acc ss individual tracks.
12
S7i Integrated CD Player / Decoding Computer

13
TRACK BACK/FORWARD : Pr ssing th s buttons allows acc ss to th pr vious or n xt track on a CD.
SEARCH BACK/FORWARD : Pr ssing th s buttons allows fast r v rs or fast forward acc ss through
a track. Pr ssing th PLAY button to r sum s normal playback.
STOP : Pr ssing this button whil a CD is playing stops PLAY.
PAUSE : Pr ssing this button, whil a CD is playing, susp nds PLAY. Pr ssing th PLAY button will r sum
play at th point wh r th paus button was pr ss d.
PLAY : Aft r a CD has b n load d, pr ssing this button plays th CD b ginning with th first track.
REPEAT : This button controls two r p at mod s: R p at track and r p at all. Pr ssing th button onc
will caus th individual track to r p at. Pr ssing th button a s cond tim will caus th ntir CD to
r p at continuously. A third button pr ss r turns th syst m to “no r p at” mod .
ENTER: S Configuring digital inputs and s l cting an algorithm on pag 16.

14
S7i Integrated CD Player / Decoding Computer
Theory of Operation
Using ClockLink with an External Processor
ClockLink liminat s jitt r add d wh n th clock signal is r cov r d from th digital data str am. In a
non-ClockLink syst m, jitt r is add d wh n th clock signal is mb dd d in th data str am and transmitt d
to th DAC. Wh n th clock signal is r cov r d from th data str am (as shown b low), and us d to clock
th DAC output, this jitt r d grad s th sonic p rformanc .
With ClockLink, th clock is not r cov r d from th data. Inst ad, th mast r clock is locat d at th DAC. This
clock signal is transmitt d to th transport to k p it synchroniz d with th DAC. B caus th r cov r d clock is
ignor d, any jitt r on that signal do s not aff ct th sonic p rformanc .
Digital inputs and outputs can b us d with a digital signal proc ssor such as a digital qualiz r. Digital proc ssors
allow th signal to b modifi d without adding analog nois and distortion. How v r, digital proc ssors can add
jitt r, as shown b low, causing notic abl sonic d gradation.
Using ClockLink with an xt rnal proc ssor, th Wadia S7i Int grat d CD Play r / D coding Comput r ignor s
th incoming clock and us s th mast r oscillator at th DAC. As a r sult, jitt r add d by th xt rnal digital
proc ssor do s not aff ct sonic p rformanc .
Transport DAC
Data to DAC
CD Player with ClockLink
Clock to Transport
Clock to Transport
Transport DAC
Data and Clock to DAC
Conventional CD Player
Jitter Added
Transport
Digital
Processor
DAC
Data and Clock to DAC
Conventional CD Player with an External Digital Processor
Jitter Added
Digital
Output
Digital
Input
Transport
Digital
Processor
DAC
Data to DAC
CD Player with ClockLink with an External Digital Processor
Digital
Output
Digital
Input

15
Configuring Digital Inputs for ClockLink
To utiliz ClockLink with an xt rnal proc ssor, th Wadia S7i Int grat d CD Play r / D coding Comput r digital
inputs must b configur d for ClockLink as d scrib d b low.
Us th Ent r button to scroll through th display m nus until you r ach th configuration m nu for th input
you wish to configur . Shown b low is th configuration m nu for Input 1:
Us th Volum Up or Volum Down button to chang to ClockLink ON. Pr ss th Mut button to sav
th configuration.
Note: Using C ockLink with a source other than the interna transport wi resu t in unpredictab e,
degraded performance.
ClockLink should only b us d wh n using an xt rnal proc ssor which is b ing f d by th Wadia S7i Int grat d
CD Play r / D coding Comput r int rnal transport. For all oth r applications, inputs should b configur d with
ClockLink OFF.
Th Wadia S7i Int grat d CD Play r / D coding Comput r has s v ral f atur s to pr v nt ClockLink from b ing
ngag d wh n it should not b . First, wh n v r th input signal is oth r than 44.1 kHz sampling fr qu ncy, th
Wadia S7i Int grat d CD Play r / D coding Comput r will automatically r v rt to r cov r d clock mod . S cond,
if th int rnal transport is not running, th Wadia S7i Int grat d CD Play r / D coding Comput r will r v rt to
r cov r d clock mod .
Note: A inputs on the Wadia S7i Integrated CD P ayer / Decoding Computer are factory configured for
C ockLink OFF.
ClockLink Status Indication
Wh n th Wadia S7i Int grat d CD Play r / D coding Comput r is op rating in ClockLink mod , th Input scr n
will indicat as shown b low:
Ev n if an input is configur d for ClockLink, th Status scr n will only indicat ClockLink if it is curr ntly
ngag d. For xampl , if an input is configur d for ClockLink, and th Wadia S7i Int grat d CD Play r /
D coding Comput r’s int rnal transport is turn d off, th n th display will not indicat ClockLink.
I n 1 : U S B A u d i o
!
!

16
S7i Integrated CD Player / Decoding Computer
Status Screen
Input Screen
Balance Screen
Operati n Screens C nfigurati n Screens
Volume Screen
Y+Enter
Mute
Mute
Mute
Mute
Mute
N+Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Enter
Menu Screen Map

17
Digital Algorithms
In th Wadia S7i Int grat d CD Play r / D coding Comput r th r ar thr us r-s l ctabl digital algorithms
that can b us d to optimiz th sonic p rformanc bas d on syst m matching and p rsonal musical prioriti s.
Th thr algorithms in th Wadia S7i Int grat d CD Play r / D coding Comput r all upsampl to 32x th input rat
(at 24 bit/1.4112 MHz DAC sampl rat ), but diff r in th ir tim and fr qu ncy domain charact ristics. Th y ar :
Algorithm A Digimast r v2.5. Wadia’s classic tim -domain int rpolation algorithm d liv rs a robust sound
with xtraordinary imag Focus and r -cr ation of r cord d spac .
Algorithm B Provid s a mor xt nd d top nd than Algorithm A, with sup rior tim -domain p rformanc
compar d to conv ntional CD filt rs.
Algorithm C R tains th high fr qu ncy xt nsion and sup rior d tail r solution of Algorithm B, but with a
mor r lax d pr s ntation ov rall.
Th s l ct d algorithm is us d for 44.1 kHz (CD) and 48 kHz sourc s, ith r from th int rnal transport or any of
th four digital inputs. For 88.2 kHz and 96 kHz sourc s, Digimast r v2.5 is always us d as it provid s th b st
p rformanc at high-sampl rat s.
W ncourag you to b com familiar with th uniqu sonic p rformanc of ach of th s algorithms and njoy
th on that brings you optimum musical pl asur .
Selecting an Algorithm
To chang th digital proc ssing algorithm, pr ss th Ent r button on th r mot control r p at dly to bring up
this configuration scr n:
Th s l ct d algorithm is shown on th s cond lin of th display. Us th Up and Down Volum buttons to
scroll to th d sir d algorithm, th n ith r pr ss th Mut button or th Ent r button to navigat to th ‘Sav
Chang s?’ scr n and choos ‘Y s’. Th display will indicat ‘CONFIGURATION STORED’ and th output of
th Wadia S7i Int grat d CD Play r / D coding Comput r will mut for 5-10 s conds whil th s l ct d algorithm
is download d to th two DSP comput rs.
Performing an Algorithm Comparison
Wh n comparing proc ssing algorithms it is important to adjust th volum to comp nsat for th diff r nt
gains of th algorithms. Without this adjustm nt th on which is loud r will usually sound b tt r in a short-t rm
A/B comparison.
In th Wadia S7i Int grat d CD Play r / D coding Comput r, algorithm A is approximat ly 1db high r output l v l
than B and C (which ar within 0.1 db of ach oth r). To comp nsat for this high r output l v l, incr as th
indicat d volum s tting by 2 units for algorithms B and C wh n comparing th m to A.

18
Appendices
TroubleShooting: Lock-up
If th Wadia S7i Int grat d CD Play r / D coding Comput r xp ri nc s a pow rful static shock or sudd n AC
surg , it is possibl to “lock-up” th comput r circuitry. A lock d-up comput r may r sult in rratic display, no
output, and no r spons to r mot commands.
If your Wadia S7i Int grat d CD Play r / D coding Comput r should lock-up, unplug th AC cord. Wait at l ast 30
s conds b for r plugging in th unit. If th unit still do s not op rat normally, contact your d al r.
Using Data Discs
W hav notic d wh n making FLAC discs for th Wadia S7i Int grat d CD Play r / D coding Comput r with
Microsoft Vista, you n d to us a third party CD burning program (i : Easy CD Cr ator, M dia Monk y). If you
us Vista’s CD burning softwar , th CD is not prop rly clos d so th Wadia S7i Int grat d CD Play r / D coding
Comput r cannot r ad th fil s. W hav not xp ri nc d any issu s with Windows XP making FLAC data CD’s.
W hav also found no issu s with a MAC OSX making th burn. Th Wadia S7i Int grat d CD Play r /
D coding Comput r will acc pt FLAC fil s up to 24/96 sampl rat s.
Software License Agreement
IMPORTANT! THIS AGREEMENT SETS FORTH TERMS AND CONDITIONS FOR THE DigiMast r SOFTWARE.
Th DigiMast r softwar is copyright d and pat nt d. It is th prop rty of Wadia Digital.
Titl to Lic ns d Softwar is not transf rr d to th custom r. Th custom r is grant d a non xclusiv lic ns to
us th Lic ns d Softwar only on this Wadia S7i Int grat d CD Play r / D coding Comput r.
At Wadia’s sol Discr tion, Wadia may provid custom r with updat s of th Lic ns d Softwar . Wadia r tains
th right to provid th Lic ns d Softwar updat s for a f . Th custom r may r fus to acc pt such Lic ns d
Softwar updat s.
Environmental Care
Wadia mak s v ry ffort to b an nvironm ntally cons rvativ company. W appr ciat it if our custom rs
join our fforts. Pl as dispos of batt ri s in a mann r that is nvironm ntally r sponsibl .
S7i Integrated CD Player / Decoding Computer

19
Technical Specifications
Decoding Software 3 us r s l ctabl upsampling algorithms including DigiMast r v2.5
Digital Processing Capability 1 - 24 Bits
Digital Resolution 21 Bits
Compatible Formats R d Book CD, CD-R, CD-RW, MP3, FLAC (up to 24/96) and WMA
(will not pla WMA lossless)
Analog Outputs On pair of Balanc d (XLR); On pair of Unbalanc d (RCA). Both can b
us d simultan ously
Digital Outputs 1 - Glass Fib r-Optic (ST), 1 - AES/EBU (XLR), 1 - SP/DIF (BNC),
1 - Plastic Optical (Toslink)
Digital Inputs 1 - USB (B1), 1 - AES/EBU (XLR), 1 - SP/DIF (BNC),
1 - Plastic Optical (Toslink)
Output Impedance 51 ohms
Power Consumption 58 watts
Weight 55 lb. (25kg) Unit its lf; 62 lb. (28kg) Shipping W ight
Dimensions 17˝ Wid , 16.5˝ D p, 7˝ High (including spik d f t)