Sony ST-SA5ES (1996)
A high-end FM/AM stereo tuner from Sony's ES series, built for precision reception and low noise.
Overview
The Sony ST-SA5ES is a stereo FM/AM tuner released in 1996 as part of Sony's ES (Elevated Standard) series, known for high-fidelity audio equipment. It features a 40-station random preset memory, station name display, and RDS capability for receiving radio data. Designed with attention to signal purity, it includes a pure circuit mode that disables the microcomputer after tuning to reduce noise interference. The tuner comes with a wireless remote control (RM-J301) and a shielded AM loop antenna for improved reception in weak-signal areas.
Specifications
| Practical sensitivity | 0.9 μV (10.3 dBf) |
| Frequency characteristic | 15 Hz to 15 kHz ± 0.2 dB |
| Signal-to-noise ratio | mono:100dB stereo:92dB |
| Total harmonic distortion rate (1 kHz) | mono:0.004% stereo:0.0075% |
| Stereo separation | wide:70dB |
| Accessory function | FM/AM 40 station random preset |
| Station name display function | Yes |
| Multiprocess memory | Yes |
| Cartone Power | 100 VAC, 50Hz/60Hz |
| Power consumption | 20W |
| External dimensions | Width 430 x Height 100 x Depth 360 mm |
| Weight | 6.3 kg |
| Attachment | Wireless Remote Control RM-J301 |
Design
The ST-SA5ES uses a radial power supply layout, routing power from the source to each circuit block via the shortest possible path to minimize interference. Wiring between circuit blocks is kept short to preserve signal integrity, and fluorine processing is applied to the heat sink to reduce vibration. An eccentric insulator is used to further isolate mechanical resonance. The tuner also features temperature compensation across all tuned circuits and includes a shielded AM loop antenna for enhanced reception in low-signal environments.
Context
The ST-SA5ES was introduced as part of Sony’s ES series, positioned as a high-performance stereo tuner. It was considered one of Sony’s top-tier analog tuners, noted for its robust build and advanced reception capabilities. The model supports RDS and offers precise tuning with minimal noise impact thanks to its pure circuit design.
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