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Audiophile Line Stage Preamplifier
Price: $ 9,500.00 / each
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Warranty and considerations: |
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| Warranty Terms (Parts and Labor) |
3 years |
| Mail order? |
The ET5 is not available mail order if you have a local dealer. If there is no local dealer, please contact us. cj would love for you to own their equipment and we can usually get cj's approval for a mail order sale. |
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Introduced in 2009, the GAT Preamplifier continues conrad-johnson's dominant
position atop the rankings of reference preamplifiers. An important benefit of
pursuing state-of-the-art designs is that the circuits and techniques developed
in our flagship products are frequently directly applicable to out entire line
of products. In this instance, we have embodied the technology of the GAT
Preamplifier in the more cost effective ET5 enhance triode line-stage
preamplifier at a more affordable price.
The circuitry of the ET5 follows closely that of the GAT line-stage
preamplifier. The audio circuit is elegant in its simplicity. An audio amplifier
stage consisting of a single-ended triode amplifier provides the voltage gain.
This amplifier stage is connected to the preamplifier outputs through a
high-current MOSFET buffer, which achieves a very low output impedance, making
the ET5 extremely flexible in the choice of interconnect cables and amplifiers.
DC voltage is supplied to the circuit by our latest discrete voltage regulator
that isolates the audio circuit from the power line by maintaining negligible
impedance across the audio frequency band. Infra-sonic noise is minimized by
operating the tube filaments (heaters) on a dc voltage supplied by a separate
regulated power supply. The ET5 is also notable for convenience and ease of use.
The unit features input selection and level adjustment by
microprocessor-controlled relays, with controls available both at the front
panel and via a full-function remote. All control functions of the ET5 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 ET5 into a high quality home theater system
without compromising its two-channel performance.
Like its bigger brother, the GAT, the ET5 is constructed from the highest
quality, carefully selected parts for unrivaled sonic performance and
reliability. Tubes have been carefully hand selected for minimum noise and
microphonics. The same CJD Teflon capacitors that distinguish the GAT are used
in the ET5 for output coupling and post-regulator power supply storage. All
other capacitors in the audio circuits and related power supplies are
polypropylene or polystyrene – there are no electrolytic capacitors in the audio
related circuits. The resistors in these circuits (including the two dozen level
control resistors) 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.
For more than three decades, we at conrad-johnson have been dedicated to
creating audio 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, we have created
what we feel is a line-stage without rival in its class. We invite you to
arrange an audition of the ET5 with your conrad-johnson dealer to experience the
extraordinary musical performance of this remarkable preamplifier.
Specifications ET5
- Gain: 25 db
- Maximum output: 20 vrms
- Output impedance: 100 ohms Distortion: less than .15% THD at 1.0 Vrms
output
- Frequency response: 2 Hz to more than 100Khz
- Hum and noise: 100 db below 2.5 v
- Phase: phase inverting
- Tube complement: 2 x 6922
- Dimensions: 15.375D x 19W x 4.94H inches
- Total weight: 28 lbs.
Every conrad-johnson ET5 Line-Stage Preamplifier is patiently and
carefully hand assembled, then individually inspected and its performance
verified by an experienced audio technician. The owner is protected by cj's
three year limited warranty covering labor and parts except vacuum-tubes.
Service is a top priority at conrad-johnson. In the event that a product does
require service, it will be handled promptly and efficiently.
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