Owner`s manual

Wadia 9 Series Decoding Computer System Owner’s Manual
17
Frequently Asked Questions
Should I use a Power Line Conditioner?
The Wadia 931 Digital Controller and 921 Mono Decoding Computer are designed to
be used without AC power line conditioners. Similarly, Wadia products are designed
to achieve outstanding performance with the AC Power cords included with the units.
If you wish to experiment, we recommend that you proceed with caution. Only
purchase an after-market AC power accessory if you are absolutely convinced that it
improves sound quality. If you have any question, we strongly recommend that you
consult your dealer, or contact Wadia directly. Most importantly, trust your own ears.
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 9 series Decoding Computer System.
All things being equal, properly implemented balanced (also called differential)
circuitry sounds better than unbalanced circuitry. The Wadia 9 Series 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 9 series is designed to maintain many of the advantages of true balanced
design when using the unbalanced outputs. In addition, the Wadia 9 series 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 9 Series Decoding computer
System. The 9 series provides all of the necessary control function 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 9 series output stage can drive any
power amplifier and any interconnects, even at very long lengths.
Can I connect an Analog Source to my 931 Digital Controller?
Analog sources are connected to the Wadia 931 Digital Controller by using an
analog-to-digital converter, such as the Wadia 17, Wadia 130, or Wadia 150, to
convert the signal to digital, and by connecting to any of the Wadia 931 Digital
Controller digital inputs.
Does the Wadia Volume Control compromise resolution?
Wadia’s patented digital filtering algorithm produces a 24 bit output rather than the
16 bits stored on a CD. This high-resolution signal is then used in the computations
which in turn reduce the volume level and is fed directly to the DAC chips. This
allows the Wadia to maintain high resolution at the lowest volume settings.
Can I bypass the Wadia Volume Control?
Because the Digital Volume Control does not include any analog circuitry, there is
technically none to be bypassed. If you would like to bypass the Wadia Volume
Control, set it to its maximum level of 100 on the display.