ET7S2 vs ET6SE
The ET6SE matches the ET7S2 on power @ 8ω (20W), thd (0.150%), output voltage (20.0V RMS), and output impedance (100Ω).
AI-generated product photo — not official manufacturer imagery.
The Conrad-Johnson ET7S2 is a high-end single-ended tube line-stage preamplifier from conrad-johnson’s Enhanced Triode range. It uses a single 6922 double triode tube for voltage gain followed by a high-current MOSFET buffer to achieve very low output impedance and broad cable/amp compatibility. The ET7S2 retains microprocessor-controlled relay switching and metal-foil resistor volume/balance control, offers five line inputs plus two processor loops, and supports a theater/pass-through mode that switches the unit to unity gain. It is a line-stage only design with no built-in phono stage. The product was listed by conrad-johnson as available new for $15,500, while a review source listed a UK price of £13,495 for the ET7-S2 variant.
Amplification power output and characteristics
Analog signal output specifications
Input and output connections
Size, weight, and appearance
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Estimated price (community-sourced)
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The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The ET6SE matches the ET7S2 on power @ 8ω (20W), thd (0.150%), output voltage (20.0V RMS), and output impedance (100Ω).
The Marconi II's thd is 0.010% against the ET7S2's 0.150%, its output voltage 12.0V RMS against 20.0V RMS, its output impedance 0.1Ω against 100Ω, and its input impedance 20Ω against 100Ω.
The REX's power @ 8ω is 50W against the ET7S2's 20W, its thd 0.005% against 0.150%, and its output impedance 200Ω against 100Ω. Both share input impedance (100Ω).
The KRC-HR's thd is 0.010% against the ET7S2's 0.150%, its output voltage 14.0V RMS against 20.0V RMS, its output impedance 5Ω against 100Ω, and its input impedance 47000Ω against 100Ω.
GAT2
ART MkII
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