Wadia 781I User manual

581se/781i CD Player
Information & Operation Manual

581se/781i CD Player

581se/ 781i CD Player
2
Information & Operation Manual
Table of Contents
Preliminaries
Wadia Digital – A Bri f History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installati n and Set-up
Unpacking...........................................................................4
Acc ssori s .........................................................................4
Installing th Tip-To s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Conn cting to Your Syst m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Conn cting to AC Pow r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Conn cting Dir ctly to a Pow r Amplifi r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Using with a Pr amplifi r . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Optimizing th Output L v l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Conn cting Digital Sourc s (Wadia 581ise/781i only) .....................................6
Choosing a Digital Cabl (Wadia 581ise/781i only) ........................................6
Fr qu ntly Ask d Qu stions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General Operati n
Front Pan l Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Display F atur s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Display Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
R mot Control Op ration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Playback Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Th ory of Op ration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
M nu Scr n Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Digital Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Appendices
Troubl shooting .....................................................................18
Softwar Lic ns Agr m nt .........................................................18
Environm ntalCar ..................................................................18
T chnicalSp cifications..............................................................19
Saf tyPr cautions ..................................................................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 581s /781i
CD Play r. W sinc r ly b li v that your Wadia 581s /781i CD Play 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 581s /781i CD Play r.
If you are in a hurry to begin listening, please read the sections of this manual where the symbol at
right is shown.
Wadia Digita – 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:
• DigiMast r™ pat nt d algorithm (filt r optimiz d for r producing music)
• ClockLink™ propri tary jitt r r duction t chnology
• SwiftCurr nt™ curr nt to voltag conv rsion t chnology
• First outboard Digital-to-Analog conv rt r
• First to apply glass fib r-optics to hom audio
• First to r cogniz jitt r as a sourc of audibl distortion
• First to p rf ct digital volum control
• First high- nd CD play r comp titiv with xp nsiv s parat s
• First company to provid bit p rf ct digital audio output from th 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 581s /781i CD Play 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
Unpacking
Us car in unpacking your Wadia 581s /781i CD Play r. Insp ct it for any shipping damag and call your d al r
imm diat ly if any is found.
Do not plug your Wadia 581se/781i CD Player into an AC outlet 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 581s /781i CD Play r ar th following acc ssori s:
• AC pow r cord
• Four tip-to s with thr ad d studs
• Four st l coast rs
• RCA/BNC adapt r (only included with 581ise and 781i)
• R mot Control
• Two typ AAA batt ri s
Do not tip the unit onto the bac panel. This can damage input and/or output connectors.
Insta ing 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 581s /781i CD Play 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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Connecting to Your System
Chec to ma e sure your Wadia 581se/781i CD Player 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
Th b st p rformanc is obtain d wh n th Wadia 581s /781i CD Play r is plugg d dir ctly into th wall with
th pow r cord provid d. Th Wadia has pow r conditioning, surg suppr ssion and an xtr m ly sophisticat d
ov rall prot ction sch m . It should not b n c ssary to us surg prot ctors pow r condition rs or aft rmark t
pow r cords, som of which may 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 ears.
Connecting Direct y to a Power Amp ifier
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 581s /781i CD Play 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 581s /781i CD Play r circuitry to “lock-up”
(s Lock-Up und r Troubl Shooting).
Inputs and outputs can b saf ly conn ct d to th Wadia 581s /781i CD Play r
1 B for th unit is pow r d up
2 Wh n th unit is in R lay-Mut mod
W strongly r comm nd that you us your Wadia 581s /781i CD Play r conn ct d dir ctly to your pow r amplifi r.
Ev n if you purchas d your Wadia 581s /781i 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 581s /781i CD Play 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 581s /781i analog outputs to th amplifi r’s inputs.
Using with a Preamp ifier
Whil th Wadia 581s /781i CD Play 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 Wadia 581s /781i CD Play r volum control to its maximum l v l.
CHECK
VOLTAGE
HERE
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Optimizing the Output Leve
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 581s /781i CD Play 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 581s /781i CD Play r is adjustabl by m ans of a s t of int rnal
switch s. Th Wadia 581s /781i CD Play 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 Digita Sources (Wadia 581ise/781i only)
Th Wadia 581is /781i CD Play r is quipp d with digital inputs which can acc pt digital signals from
any of th stablish d digital formats. (Input 1: Glass-fib r optical, Input 2: Coaxial with BNC conn ctor,
Input 3: Plastic-optical TOSLINK, Input 4: AES/EBU with XLR conn ctor)
Th Wadia 581is /781i CD Play 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 Digita Cab e (Wadia 581ise/781i only)
Whil th Wadia 581is /781i CD Play r supports all curr ntly acc pt d transmission formats for digital audio,
w r comm nd using a high quality glass-fib r cabl such as th on availabl from Wadia. Wadia Digital was
th first company to us glass fib r-optic data transmission in digital audio. W hav continually improv d this
format and b li v that it off rs th b st, most consist nt p rformanc of all th availabl options.
Bas d on our xp ri nc , h r is a list of digital int rfac m thods in d sc nding ord r of p rformanc :
1 Glass optical (as implemented by Wadia)
2 AES/EBU using XLR conn ctor
3 Coaxial cabl using BNC conn ctor
4 Coaxial cabl using RCA conn ctor
5 TOSLINK plastic-optical cabl
Th quality of any of th s transmission m thods 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/EBU
cabl . 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 581is /781i 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 .
Again, w highly r comm nd that you tak advantag of your d al r’s xp ri nc and, most importantly,
trust your ears.
All XLR-typ inputs and outputs on th Wadia 581s /581is /781i CD Play r, both digital and analog, us th
standard audio pin configuration:
Pin 1 - Ground
Pin 2 - Positiv signal
Pin 3 - N gativ signal
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Frequent y Asked Questions
Should I use a Balanced or Unbalanced 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
581s /781i CD Play 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 581s /781i CD Play 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
581s /781i CD Play 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 581s /781i CD Play r output stag is capabl of driving both typ s
of outputs simultan ously.
Why should I bypass the Preamplifier?
A pr amplifi r is unn c ssary wh n using your Wadia 581s /781i CD Play r. Th Wadia 581s /781i CD Play 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 581s /781i CD Play 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 Volume Control compromise resolution?
Th Wadia 581s /781i CD Play 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 581s /781i
CD Play r maintains high r solution v n at th low st volum control s ttings.
Can I bypass the Wadia Volume Control?
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 Analog 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.
Should I leave the Wadia 581se/781i CD Player with the power on?
Th Wadia 581s /781i CD Play 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 display can b turn d off
(s Turning off th Display und r R mot Op ration). 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 581s /781i CD Play 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 581s /781i 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 Pane Contro s
Th front pan l of th Wadia 581s /781i CD Play r f atur s basic controls that allow you to op rat basic
functions without using th R mot Control.
Pr vious Track
This button will caus th unit
to mov to th pr vious track
and b gin playing.
Op n/Clos /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 playing, push the button once to
stop and once more to open.
Volum Down
D cr as s th volum by 1/2 dB.
Play/N xt Tract
This button will caus th unit
to advanc to th n xt track
and b gin playing.
Volum Up
Incr as th volum by 1/2 dB.
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Disp ay Features
Disp ay Functions
Th Wadia 581s /781i CD Play 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 Scr n
This scr n is display d ach tim th Wadia 581s /781i CD Play 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. (Th scr n on th 781i will r ad “781i CD Play r”)
Input Scr n
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 Tim Playback Options Format
Transport FunctionsVolum

581se/ 781i CD Player
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Status Scr n
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.
Volum Scr n
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 B tw n Display Scr ns
Anytim a button is pr ss d, th Wadia 581s /781i CD Play 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 581s /781i CD Play 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, as shown in th M nu Scr n
Map on pag 15.

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Remote Contro Operation
Th Wadia 581s /781i CD Play r r mot control r quir s two typ -AAA batt ri s, which you will find in th
acc ssori s kit. To install th batt ri s, r mov th batt ry cov r on th back of th r mot by sliding it towards
th bottom of th r mot . Ins rt th batt ri s as indicat d on th batt ry hold rs.
Adjusting th Volum
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 th Balanc
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 0.1 dB.
Program* / Transport Tim Mod
R p at / Singl Track R p at
Dir ct
0
Draw r Op n/Clos / S arch Back
Paus / Play
Stop / Track Back / Track Forward
Display On/Off
Balanc L ft/Right
Ent r
Mod
Input
+ 10** / Phas Inv rt
S arch Forward / Mut
Volum Up/Down
* Not Active
** Use before selecting any trac
greater than nine (see page 12)

S l cting an Input
Th Wadia 581is /781i CD Play 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.
Format S l ction
Th Wadia 581s /781i CD Play r has CD and SACD playback capabiliti s. You can toggl b tw n th CD and
SACD lay r on a hybrid disc by first pr ssing th Stop button and th n th Mod button.
Inv rting Absolut Phas
Th Wadia 581s /781i CD Play 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 581s /781i CD Play r to inv rt phas ;
pr ssing it again will switch th phas back to normal. If th Wadia 581s /781i CD Play r is in Phas Inv rt
mod , this will b indicat d on th Input Scr n of th display.
Turning Display On/Off
By pr ssing th Display On or Off button, th Wadia 581s /781i CD Play r display can b turn d off compl t ly.
Mut Mod s
Th Wadia 581s /781i CD Play r has two mut mod s that ar automatically impl m nt d und r diff r nt
circumstanc s.
DSP-Softwar Mut
Wh n th Mut button is pr ss d on th r mot control, th Wadia 581s /781i CD Play 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-R lay Mut
Th Wadia 581s /781i CD Play r has mut r lay conn ct d 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 581s /781i CD Play r d t cts AC input l v l b low its minimum op rating rang .
• Each tim th Wadia 581s /781i CD Play 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 581s /781i CD Play r is in ith r Mut Mod , th Volum Scr n will indicat this by displaying
th word, “MUTE.”
+10: Us b for s l cting any track gr at r than 9. For xampl ; to s l ct track 23 you should first pr ss th +10
button and th n pr ss th 2 button and th n th 3 button.
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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
P ayback Options
TIME : This button switch s b tw n th various tim mod s on th display. B for play, th total tim on
th CD is shown. Onc a CD starts to play th laps d tim of that track will b shown. Pr ssing th button on
th r mot control onc will caus th display to indicat th r maining tim in that track (r main). Pr ssing this
button on th r mot control again will caus th display to indicat th total tim laps d for th ntir CD.
Pr ssing th button anoth r tim will caus th display to show th total tim r maining for th ntir CD. Finally,
pr ssing th button again will cycl back to th original d fault s tting.
REPEAT : Pr ssing this button will caus th ntir CD to r p at continuously. Pr ssing this button a s cond
tim will tak th transport out of th r p at mod .
SINGLE REPEAT : Pr ssing this button will r p at a singl track continuously. Pr ssing th singl r p at
button a s cond tim will tak th transport out of singl r p at mod .

14
581se/ 781i CD Player
Theory of Operation
Using ClockLink with an Ext rnal Proc ssor
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 .
Th Wadia 581is /781i CD Play r with its 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 581is /781i CD Play 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 (Wadia 581ise/781i Only)
To utiliz ClockLink with an xt rnal proc ssor, th Wadia 581is /781i CD Play 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 Cloc Lin with a source other than the internal transport will result in unpredictable,
degraded performance.
ClockLink should only b us d wh n using an xt rnal proc ssor which is b ing f d by th 581is /781i CD
Play r int rnal transport. For all oth r applications, inputs should b configur d with ClockLink OFF.
Th Wadia 581is /781i CD Play 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 581is /781i CD
Play 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 581is /781i CD Play r will r v rt to r cov r d clock mod .
Note: All inputs on the Wadia 581ise/781i are factory configured for Cloc Lin OFF.
ClockLink Status Indication
Wh n th Wadia 581is /781i CD Play 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 581is /781i CD Play r’s int rnal
transport is turn d off, th n th display will not indicat ClockLink.
!
!

16
581se/ 781i CD Player
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
Digita A gorithms
In th Wadia 581s /781i CD Play 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 581s /781i CD Play 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, 96 kHz and DSD (SACD) 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 .
S l cting 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
581s /781i CD Play r will mut for 5-10 s conds whil th s l ct d algorithm is download d to th two
DSP comput rs.
P rforming 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 581s /781i CD Play 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
Enab ing/Disab ing Digita Outputs
Th Wadia 581s /781i CD Play r is d sign d in such a way that th unus d digital outputs can b disabl d. This
can r sult in slightly b tt r ov rall p rformanc . S your d al r for information about th s int rnal adjustm nts.
Troubl Shooting: Loc -up
If th Wadia 581s /781i CD Play 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 581s /781i CD Play 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.
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 581s /781i CD Play 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.
Environm ntal Car
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 .
581se/ 781i CD Player

19
Technica Specifications
D coding Softwar 3 us r s l ctabl upsampling algorithms including DigiMast r v2.5 with
propri tary DSD proc ssing
Digital Proc ssing Capability 1 - 24 Bits
Digital R solution 21 Bits
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),
(Wadia 581ise/781i only) 1 - Plastic Optical (Toslink)
Digital Inputs 1 - Glass Fib r-Optic (ST), 1 - AES/EBU (XLR), 1 - SP/DIF (BNC),
(Wadia 581ise/781i only) 1 - Plastic Optical (Toslink)
Output Imp danc 51 ohms
Pow r Consumption 58 watts
W ight 55 lb. (25kg) Unit its lf; 62 lb. (28kg) Shipping W ight
Dim nsions 17˝ Wid , 16.5˝ D p, 7˝ High (including spik d f t)