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| conrad-johnson CT-5 Blemished |
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Analog surround sound preamplifier
| Regular Price: | $ 8,500.00 / Each |  | | Your Price: | $ 6,000.00 / Each | | You Save: | $ 2,500.00 / Each |
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Warranty and considerations: |
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| Warranty Terms (Parts and Labor) |
3 years |
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With the 1996 introduction of the Anniversary Reference Triode (ART),
conrad-johnson established a benchmark for line-stage preamplifier performance
that reigned supreme for most of a decade. Reviewers were unanimous in their
praise, proclaiming it the finest sounding preamplifier ever manufactured. In
2004, the ACT2 line stage brought new materials technology and refined power
supply design to the composite triode circuit pioneered by the ART, once again
elevating the state of the art. As has been our tradition at conrad-johnson,
these technological advances are now offered in a more cost effective near state
of the art design, the CT5 composite triode preamplifier.
The composite triode circuit is a conceptually simple design—based on
creating a single “super” triode by paralleling sections of individual tubes. In
this way, the entire amplification circuit can be reduced to a single active
stage, without buffers or feedback. Any active circuit element will color the
sound, whether the element is an amplifier or a buffer stage. By designing a
line stage consisting of a single composite triode, cj is able to reduce the
circuit to the absolute minimum of a single active element. The result is an
astonishing improvement in dynamics and dynamic shadings, as well as focus.
In the CT5, the composite triode is comprised of two paralleled sections of
ultra-high transconductance miniature twin-triode tubes. This circuit achieves a
sufficiently low output impedance to drive most interconnect/amplifier
combinations while eliminating any circuit element that might compromise its
sonic purity. To realize the full potential of this amplifier stage, it is
powered by a sophisticated discrete voltage regulator designed to completely
isolate the audio signal from the power line.
All control functions of the CT5 operate through microprocessor-controlled
relays. For the level control, the relays select combinations from a network of
precision, low-noise metal foil resistors to effect loudness and balance changes
in 100 steps of approximately .7dB per step. All switching and adjustment can be
controlled by the unit’s remote control. A Theater mode, which passes the input
signal through at unity gain, makes it simple to incorporate the CT5 into a high
quality home theater system without compromising its two-channel
performance.
Like its bigger brother, the ACT2, the CT5 is constructed from the highest
quality, carefully selected parts for unrivaled sonic performance and
reliability. The same CJD Teflon capacitors that distinguish the ACT2 are used
in the CT5 for output coupling and post-regulator power supply storage. All
other capacitors in the audio circuits and related power supplies are
polypropylene or polystyrene, and the resistors in these circuits (including the
level control) are special low inductance, high-precision laser-trimmed metal
foil resistors. Switches are sealed relays with gold-plated silver contacts.
Input and output connectors are premium quality custom machined parts.
In cj's quest to recreate the glory of music without compromise,
conrad-johnson are dedicated to bridging the gulf between craft and art to
create audio amplification components that do credit to music performances.
Through meticulous engineering, careful specification of only the finest
available component parts, and a painstaking attention to construction, cj has
created what we feel is a line-stage without rival in its class. We invite you
to arrange an audition of the CT5 to experience the extraordinary musical
performance of this remarkable preamplifier.
Specifications
CT5
Gain: 20 db
Maximum output: 10 vrms
Output impedance: 800
ohms
Distortion: less than .1% THD at 1.0 Vrms output
Frequency response:
2 Hz to more than 10OKhz
Hum and noise: 100 db below 2.5 v
Phase:phase
inverting
Tube complement: 2 x 6N30P
Dimensions: 15.5D x 19W x 5H
inches
Total weight: 31 lbs.
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