The ET2 is a remote-controlled vacuum-tube preamplifier designed to serve as the control center for high-performance audio and audio/video systems. The ET2 features a sophisticated level control circuit designed to allow precisely repeatable level and balance settings with adjustments made in .5db increments. With seven inputs, the ET2 will accommodate elaborate audio systems. The ET2 includes a Theater Loop which provides a locked unity gain setting, making it the ideal component for listeners who’ve been wanting to integrate home theater into their stereos without compromising the performance of their primary music system.

The ET2 zero-feedback line-stage circuit consists of a single-ended triode amplifier using a high current vacuum tube. A direct coupled buffer stage provides a low output impedance to insure that the ET2 can comfortably drive virtually any combination of interconnect cable and power amplifier.  This circuit’s simplicity pays dividends in tonal integrity and seductive musicality while offering flexibility in system matching.

The ET2 is optionally available with a choice of two built-in phono equalization preamplifier stages (a high gain stage and a low gain stage) to provide the additional gain and RIAA equalization that phono cartridges require. The phono circuit uses two triode amplifier stages for voltage gain. A passive network of precision components accurately provides the required frequency compensation. A direct coupled buffer stage isolates the stage from external cables and components connected to the EPL and theater outputs. The circuit employs no negative feedback loop, eliminating feedback induced timing errors that compromise dynamics and imaging. The high gain phono stage is suited for use with low to medium output moving coil cartridges with rated output of 1.0 mV or less. The low gain stage is recommended for cartridges with output above 1.0 mV.

Specifications

ET2 line stage
Gain:  28.5 dB
Maximum Output:  5.5 vrms 
Distortion:  less than .1% THD
Freq. Response: 2 Hz to 100 KHz +0/-1 dB
Hum and Noise: 95 dB below 2.5 V
Phase: phase inverting
Dimensions: 13.75D x 19W x 3.315H inches
Weight: 15 lbs.

ET2 Optional High Gain Phono Stage
Gain: 54dB
RIAA Equalization: +/- .5 db 20 Hz to 20 kHz
Phase: phase correct

ET2 Optional Low Gain Phono Stage
Gain: 40dB
RIAA Equalization: +/- .5 db 20 Hz to 20 kHz
Phase: phase correct
       

All conrad-johnson products are carefully hand assembled and each is thoroughly tested to assure conformity to our exacting performance standards. Our confidence in these components is reflected in our three year limited warranty covering labor and parts. 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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conrad-johnson design, inc. 2733 Merrilee Drive Fairfax, VA 22031

phone: 703-698-8581, fax: 703-560-5360