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ET3 Valve Line Preamplifier w/Remote

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At conrad-johnson, development of their flagship products has traditionally led to important enhancements of our entry-level offerings.  The ET3 preamplifier is a case in point.  The ET3 line-stage is a “baby” version of their flagship line-stage preamplifier, the GAT.  The family resemblance is much more than skin deep.  With voltage gain provided by a triode vacuum-tube, the zero-feedback line-stage circuit of the ET3, along with its DC voltage regulators, closely replicates the circuit of the GAT.  Finally, and especially noteworthy, the ET3 features a relay operated discrete stepped attenuator level-control circuit of the type found in the GAT and CT5, absent only the balance control function found in those more costly models.

Functionally, the ET3 provides highly flexible I/O facilities with six separate line-level inputs (including one “tape” loop), plus a theater loop that facilitates use in a home theater system.  In addition, the ET3 offers the convenience of infrared remote control of all functions.

It would be fair to say that the only thing “entry-level” about the ET3 is its price.  You’ll be surprised at just how affordable true high-end performance can be.


ET3 line stage
Gain:  25 dB
Maximum Output:  20 Vrms  
Distortion:  less than .15% THD
Impedance: 100 Ohms 
Freq. Response: 2 Hz to more than 100 KHz 
Hum and Noise: 98 dB below 2.5 V 
Phase: phase inverting
Tube Compliment: 1x 6922 


Dimensions: 13.125D x 19W x 3.315H inches

Weight: 13 lbs.


HiFi +


October 2010 Awards (Review)


HiFi +


October 2010 Awards (Award Winner)