Conrad-Johnson
Conrad Johnson ET7 S2 Enhanced-Triode Preamplifier
Best high-end preamplifier for audiophiles seeking flagship performance in their system.
Experience exceptional musical performance with the Conrad Johnson ET7 S2, an enhanced triode line-stage preamplifier. It brings advanced Series 2 technology from the flagship GAT model to a more accessible price point. The elegant circuit design features a single-ended triode amplifier and a MOSFET buffer, ensuring low output impedance for broad system compatibility. Effortlessly control inputs and volume via microprocessor-controlled relays, accessible from the front panel or remote. A dedicated Theater Mode allows seamless integration into your home theater setup, delivering outstanding sonic clarity and reliability.
$13500.00
Owner Satisfaction
4.8
/ 5
Category Rank
14
/ 111
#14 in Audio Amplifiers
Price vs Category Average
-13%
Below average
Who it's for
- Critical listeners desiring a deep, three-dimensional, and precise soundstage
- Audiophiles seeking a natural, liquid, and emotionally engaging musical performance
- Listeners prioritizing long-term reliability and premium, reference-grade internal components
Who should skip it
- Owners requiring balanced XLR connectivity for their modern audio chain
- Budget-conscious buyers seeking high-end performance at a moderate price
- Users preferring a low-maintenance, set-and-forget audio system
Performance breakdown
Sonic Transparency
Inherits flagship-level clarity for an incredibly lifelike musical presentation.
System Compatibility
Low output impedance ensures seamless pairing with a wide variety of amplifiers.
Volume Precision
The 100-step control allows for granular, perfect adjustments at any level.
Component Integrity
Premium Teflon and polypropylene capacitors ensure long-term sonic purity and reliability.
Theater Integration
Dedicated mode makes blending high-end stereo with home cinema effortless.
Build Refinement
Elegant circuit design prioritizes signal path purity over unnecessary complexity.
Key Specs
Circuitry based on GAT Series 2
Single-ended triode amplifier stage for voltage gain
High-current MOSFET buffer for low output impedance
Discrete voltage regulator for isolated power supply
DC voltage for tube filaments
Microprocessor-controlled relays for input selection and level adjustment
100 steps of loudness and balance control (~0.7dB per step)
CJD Teflon capacitors, polypropylene capacitors, no electrolytic capacitors in audio circuits or power supplies
Features
- Series 2 technology from flagship GAT model
- Elegant and simple audio circuit design
- Low output impedance for system flexibility
- Precise 100-step level control
- Front panel and remote control operation
- Integrated Theater Mode
- High-quality component selection
- Single-ended triode amplifier stage
What customers say
The Conrad Johnson ET7 S2 Preamplifier earns high praise for its exceptional sonic purity and musicality. Reviewers consistently highlight its rich, natural midrange and vast, three-dimensional soundstage. The design successfully balances desirable tube warmth with speed and micro-detail, offering superb resolution. Listeners upgrading note a significant improvement in dynamic punch and clarity when handling complex music. While positioned in the luxury segment, the consensus is that its profound performance justifies the investment. Users express deep satisfaction with the unit's ability to deliver emotional engagement through superb build quality and refined sound.
Know before you buy
The ET7 S2 incorporates the core Series 2 technology developed for the GAT, offering a similar sonic signature and circuit philosophy in a more streamlined, accessible chassis.
Yes, the ET7 S2 features a high-current MOSFET buffer that provides a low output impedance, ensuring it can drive a wide variety of power amplifiers without compatibility issues.
Absolutely. The unit includes a dedicated Theater Mode that allows you to bypass the volume control, enabling seamless integration with a home theater processor while maintaining high-fidelity performance for your main speakers.
The preamplifier uses microprocessor-controlled relays to provide 100 distinct steps of volume and balance adjustment, with each step representing approximately 0.7dB for highly granular control.
Conrad-Johnson utilizes high-quality CJD Teflon and polypropylene capacitors throughout the design. Notably, the unit contains no electrolytic capacitors in the audio circuits or power supplies to ensure long-term reliability and sonic purity.
As a tube-based preamplifier, the ET7 S2 will sound its best after the tubes have reached their operating temperature, which typically takes about 20 to 30 minutes of use.
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