The JVC A-S3 is a classic entry-level vintage stereo integrated amplifier manufactured in Japan by the Victor Company of Japan (JVC) between 1979 and 1982.
 
Historical Context
During the late 1970s and early 1980s, the global high-fidelity audio market was expanding rapidly. JVC introduced the A-S3 as a budget-friendly option targeted at consumers looking to build their first serious component-based Hi-Fi system. It was frequently sold as part of a matching stack alongside components like the JVC T-V3 AM/FM tuner (presented here as set).
 
Design and Aesthetics
The amplifier embraced the era's signature look with a brushed aluminum silver faceplate and matching aluminum knobs. Instead of a traditional rotary dial for switching inputs, JVC opted for a distinct mechanical push-button layout to toggle between the Phono, Line, and Tape Monitor sources.
 
Technical Specifications
The A-S3 relied on a solid-state transistorized circuit designed to drive efficient bookshelf speakers of the era.
 
Power Output: 22 watts per channel into 8Ω (stereo)
Frequency Response: 20Hz to 40kHz
Total Harmonic Distortion (THD): 0.08%
Damping Factor: 50
Inputs: Phono (MM) for turntables, Tape, and Aux/Line
Outputs: Raw wire terminals for two speaker pairs (A, B, or A+B) and a front headphone jack
Weight: 5.1 kg
 
Legacy and Modern Collectibility
Today, the JVC A-S3 is well-regarded in the vintage audio community as a highly reliable, low-maintenance entry point into analog audio. Because of its straightforward internal layout, it is highly favored by hobbyists.