Classe Audio CP-700 ユーザーズマニュアル
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extensive listening tests Excellent measured performance is to be expected in world-class products, and
Classé products deliver that performance. However, experience has shown that
technical excellence alone is insufficient to guarantee subjectively musical results.
technical excellence alone is insufficient to guarantee subjectively musical results.
For this reason, all Classé products are laboriously fine-tuned during the
development process by carefully controlled listening tests. Our ears are still
some of the finest laboratory test instruments available, and nicely complement
more traditional engineering test equipment. In the course of optimizing the
circuitry for a product, hundreds of decisions are made based on the subjective
impression given by substituting one high quality part for another.
development process by carefully controlled listening tests. Our ears are still
some of the finest laboratory test instruments available, and nicely complement
more traditional engineering test equipment. In the course of optimizing the
circuitry for a product, hundreds of decisions are made based on the subjective
impression given by substituting one high quality part for another.
As an example, we may listen to half a dozen 0.1% tolerance film resistor
components of the same value, from several different companies. Standard tests
may show them all to provide identical results in terms of noise, distortion, and
so forth. Yet, almost invariably, one selection yields some small improvement in
the subjective reaction to the performance of the product under development.
Less often, even a single such change can result in a surprisingly large
improvement.
components of the same value, from several different companies. Standard tests
may show them all to provide identical results in terms of noise, distortion, and
so forth. Yet, almost invariably, one selection yields some small improvement in
the subjective reaction to the performance of the product under development.
Less often, even a single such change can result in a surprisingly large
improvement.
Multiply those various improvements by the dozens or even hundreds of such
decisions that must be made before the product can be finalized for production,
and you have a remarkable improvement, indeed – all based on careful listening
tests, which we view as a necessary complement to the solid engineering you
might rightly expect from Classé.
decisions that must be made before the product can be finalized for production,
and you have a remarkable improvement, indeed – all based on careful listening
tests, which we view as a necessary complement to the solid engineering you
might rightly expect from Classé.
extraordinary longevity Another benefit of having worked with highly refined circuit designs so
extensively over many years is that we have vast experience in what works well
over the long term.
over the long term.
By using only the highest quality parts to begin with, and then using them in an
informed way as a result of both accelerated aging experiments and actual long-
term experience, we are able to design and manufacture products which we are
confident will stand the test of time.
informed way as a result of both accelerated aging experiments and actual long-
term experience, we are able to design and manufacture products which we are
confident will stand the test of time.
We are confident that your new Classé preamplifier will give you many years of
trouble-free reliability and musical enjoyment, just as previous Classé products
have given their owners.
trouble-free reliability and musical enjoyment, just as previous Classé products
have given their owners.
robust, isolated
power supplies
The CP-700 employs an outboard power supply to provide the ultimate in
performance. This unit includes a massive 135 VA toroidal transformer with
five secondary windings to provide maximum isolation for both the positive
and negative voltages required by each channel, as well as the voltage used by the
control circuitry within the preamplifier itself.
performance. This unit includes a massive 135 VA toroidal transformer with
five secondary windings to provide maximum isolation for both the positive
and negative voltages required by each channel, as well as the voltage used by the
control circuitry within the preamplifier itself.
This design approach ensures that the preamplifier itself sees only the pure,
highly-regulated DC power it needs for handling the music signals, while the
high-voltage AC mains is kept safely away from your music. In short, it creates
an ideal environment in which the refined circuitry of the CP-700 can operate
to its full potential in service of your musical enjoyment.
highly-regulated DC power it needs for handling the music signals, while the
high-voltage AC mains is kept safely away from your music. In short, it creates
an ideal environment in which the refined circuitry of the CP-700 can operate
to its full potential in service of your musical enjoyment.