The conrad-johnson ET5 embodies the technology of the GAT enhance triode line-stage preamplifier at a more affordable price. 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 for a very low output impedance. 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 features input selection and level adjustment by microprocessor-controlled relays, with controls available both at the front panel and via a full-function remote. 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. 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. 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 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.
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: 6922. Dimensions: 15.375D x 19W x 4.94H inches.
Machined luminum emote ontrol included