QUAD 99 Series - Manual (Page 9)

9
In many countries FM radio still has the
potential to provide the highest fidelity
programme quality. The Quad 99 FM Tuner
has been designed to make the best use of
that potential.
The UK has gained a world-wide reputation
for the high-quality music broadcasts
transmitted by the BBC, and as a result
British manufacturers such as Quad have
considerable experience in designing tuners
that receive and reproduce music
realistically. The Quad 99 FM Tuner
incorporates that experience in full.
The 99 FM Tuner and 99 CD Player are both
connected to the rest of the system via our
‘Quad Link’ bus system, which combines
complete system control with balanced line
audio transmission. Not only does this
make the entire system remarkably easy to
control, but provides the cleanest audio
signal possible.
FM Tuner
State of the art performance combined with
unique operating features sets the Quad 99
Pre-Amplifier apart from competing products.
The combination of universal phono-socket
connectors and Quad Link inputs gives the
ability to connect an almost unlimited
number of sources, each with optimal
matching. All inputs, including those for
moving-coil and moving-magnet cartridges,
have adjustable sensitivity.
This flexibility also extends to the wide
range of precise tone-control adjustments
that can be made. In addition to the usual
high-frequency filter, there are adjustments
for the bass response, and the unique Quad
‘Tilt’ control which skews the entire
frequency response to give a preferred tonal
balance.
The Quad 99 Pre-Amplifier is packed with
technical innovation including noiseless
solid state signal switching and digitally
addressed analogue volume and balance
controls. These track both left and right
channels with a previously unattainable
accuracy of better than 0.1dB.
Pre-Amplifier
The 909 Stereo Power Amplifier
incorporates Quad’s patented current
dumping technology and is one of the finest
audio amplifiers available today.
The current dumping technique eliminates
many of the problems associated with
transistor amplifiers giving a consistent and
predictable performance without a need for
the fine tuning adjustments on the
production line.
In current dumping amplifiers there is a
very high quality low power output
amplifier and a very high power output
amplifier whose performance is not critical.
This high power output amplifier controls
the loudspeaker at all times and provides
the current or ‘muscle’ to generate the
sound. The low power output amplifier is
arranged to generate a signal that
compensates for errors between the input
signal, and the signal fed to the
loudspeakers. The result is that the quality
and accuracy of the output signal depends
only upon the performance of the low
power amplifier. In the Quad 909 this low
power output amplifier has been
engineered to the highest standards.
The problems of crossover distortion;
quiescent current adjustment; thermal
tracking and transistor matching all
disappear. If such a thing as a perfect
amplifier were to exist, then the Quad 909
would be very close to that perfection.
909 Stereo Power Amplifier
-effacing Quad lets
plenty of poke, can
detail, and has taut
d a smooth treble.”
Sound & Vision