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 861 Compact Disc Player.
All things being equal, properly implemented balanced (also called differential) circuitry sounds better
than unbalanced circuitry. The Wadia 861 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 861 is designed to maintain many of the advantages of true balanced design when using
the unbalanced outputs. In addition, the Wadia 861 output stage is capable of driving both types of out-
puts simultaneously.
Why should I bypass the Preamplifier?
A preamplifier is unnecessary when using your Wadia 861 Compact Disc Player. The Wadia 861
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 861
output stage can drive any power amplifier and any interconnects, even very long lengths.
Does the Wadia Volume Control compromise resolution?
The Wadia 861 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 861 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 861 with the power on?
The Wadia 861 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 display 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 861 will improve steadily after the unit is powered-up. A new unit will undergo more dra-
matic changes when power is applied for the first time. If you turn off your Wadia 861 for more than an
hour, you will find that the unit will undergo similar, but less dramatic improvement once power is reap-
plied.
Wadia 861
COMPACT DISC PLAYER
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