The Electro-Voice A20C is a vintage 20-watt mono high-fidelity integrated tube amplifier introduced around 1956, famous for utilizing Electro-Voice's patented Circlotron (push-pull parallel) output circuit topology. This is ONLY ONE MONOBLOCK for sale. It has been fully restored with no part modifications or tweaks and is completely ready for use.

Key Specifications & Features

  • Output Power: 20 watts rated (higher peak capability).
  • Circuit Design: Uses the Wiggins Circlotron design which removes direct current (DC) from the output transformer, enabling class-A/B operation, lower distortion, and cooler running tubes.
  • Tube Complement (typical for A20/A20C variants): Includes vacuum tubes such as 12AX7, 12BH7, 6V6GT, and rectifier/driver tubes like 5Y3GT.
  • Inputs & Controls: Features multi-source inputs (phono with multiple equalization curves, microphone, tape, tuner/TV) along with tone controls, a brilliance control, and a variable damping control.

This item is sold As-Described

This item is sold As-Described and cannot be returned unless it arrives in a condition different from how it was described or photographed. Items must be returned in original, as-shipped condition with all original packaging.Learn More.

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Listeda day ago
ConditionVery Good (Used)
Very Good items may show a few slight marks or scratches but are fully functional and in overall great shape.Learn more
Brand
Model
  • A20C
Categories
Year
  • mid 50s
Made In
  • United States

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Marx Presents:

Saint Paul, MN, United States
Joined Reverb:2022

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