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A1 PRO CD
INSTALLATION
Issue 4: 6
th
May 2008
Page 7 of 16
INTRODUCTION
Congratulations on the purchase of your new A1 CD
player.
The A1 CD has extremely low jitter, vanishingly low
distortion, exemplary linearity and ultra low noise. Its
case design complements the A1 series components
which include an integrated amplifier all in the same
convenient size.
Great attention has been paid to internal layout,
isolating each circuit section to prevent possible
interaction.
For added convenience the front panel display and
controls are duplicated on the top next to the mechanism.
This allows easier track selection and control.
The CD digital data streams are first up-sampled to
192kHz, which moves noise, jitter and distortion
artefacts well above the audio band. They are then
passed through a new, low noise, low distortion 24-bit
dual-differential digital-to-analogue converter, which
allows simpler filtering of the analogue output. This in
turn gives an improved audio response without the need
for sharp filters that degrade sound quality. The result is
a CD player which has a smoother response than
previously possible with none of the “hardness” of other
units.
The resultant performance achieved by this unit is
among the best in the world. It has excellent signal to
noise ratio, low distortion, wide bandwidth, huge
dynamic range, extraordinary resolution and fine detail.
NOTES ON USING COMPACT DISCS
Always hold discs by the edges and make sure they
remain clean - do not touch the surface. Keep discs away
from direct sunlight and heat sources, such as radiators.
Clean discs with a cloth before playing them, but do not
use solvents such as benzene, thinners, or antistatic spray
intended for analogue records.
After playing, always return the disc to its case for
storage.
INSTALLATION
Position the A1 CD on a stable, horizontal surface
where there is no risk of it being knocked, or subjected
to vibration such as from loudspeakers.
Protect your A1 CD from humidity - if the unit is
moved from a cold place to a warm room, or in generally
humid conditions, moisture can form on the pickup lens
inside the player, preventing the laser beam from reading
the disc. If this happens, remove the CD, close the arm,
and leave the unit switched on for an hour or so to allow
sufficient time for the moisture to evaporate.
AUDIO CONNECTIONS
Outputs: Connect your amplifier inputs to the RCA
sockets on the back panel marked as LEFT and RIGHT
outputs.
If desired, the unit can also be attached to an external
DAC of your choice. The unit outputs COAX and
OPTICAL digital signal stream at 44.1kHz.
POWER CONNECTIONS
The unit plugs into mains supply using IEC mains lead.
The connector should fit comfortably when properly
seated.
Do not force the connector.
SWITCHING ON
Press the front panel button. The display should light on
the front panel, indicating the unit is ready to use.
CLEANING
Before cleaning the unit, switch off power at the mains
switch and remove the mains plug from the wall socket.
Clean the cabinet and remote control unit using a moist
cloth. We do not advise using solvents, white spirit or
thinners as they could damage the surface finish.