198716 📃
Technology catalog for the updated SONY ES lineup, fall 1987. The amplifiers gained a Mark II designation: TA-F555ESX II and TA-F333ESX II feature a refined S.T.D. Circuit (Spontaneous Twin Drive Circuit) and the same G-Chassis zinc die-cast enclosure. TA-F222ESX stayed without the II suffix but held its spot in the lineup. Tuners ST-S333ESX II and ST-S222ESX carry the full Wave Optimizer package - SST, WOIS, WODD, and WODSD. The catalog newcomer is the SDP-777ES at ¥79,800: a digital surround processor with Pro Logic and Dolby Surround, replacing the SDP-505ES from the previous year’s catalog.
- Gシャーシ (Acoustically Tuned Gibraltar Chassis) - G-Chassis (Gibraltar Chassis) - zinc die-cast chassis with acoustic tuning: monolithic construction suppresses cabinet resonances and improves sound clarity
- S.T.D.回路 (Spontaneous Twin Drive Circuit) - S.T.D. Circuit (Spontaneous Twin Drive Circuit) - dual output stages working in tandem to expand dynamic range when reproducing CD sources
- シンプル&ストレート伝送 - Simple & Straight Transfer - shortest possible signal path: minimal switches and buffers in the circuit
- Wave Optimizer Technology - Wave Optimizer Technology - Sony's proprietary radio signal optimization for ES tuners, from antenna to stereo decoder
- SST (Super Sound Tracing Circuit) - SST (Super Sound Tracing Circuit) - front-end circuit that reduces intermodulation distortion from strong out-of-band signals
- WOIS (Wave Optimized IF System) - WOIS (Wave Optimized IF System) - optimized IF stage with precisely tuned filters to eliminate waveform envelope distortion
- WODD (Wave Optimized Direct Detector) - WODD (Wave Optimized Direct Detector) - direct detector bypassing the conventional discriminator, reducing phase distortion
- WODSD (Wave Optimized Digital Stereo Decoder) - WODSD (Wave Optimized Digital Stereo Decoder) - digital stereo decoder with waveform optimization using digital pilot tone processing
- PRO LOGIC (ドルビーサラウンド) - Pro Logic (Dolby Surround) - matrix surround decoding: the SDP-777ES extracts four-channel Dolby Surround from standard stereo recordings
| Model | Type | Price |
|---|---|---|
| SONY TA-F555ESX II | integrated amplifier, ES series, flagship | ¥128,000 |
| SONY TA-F333ESX II | integrated amplifier, ES series | ¥79,800 |
| SONY TA-F222ESX | integrated amplifier, ES series | ¥67,000 |
| SONY ST-S333ESX II | FM/AM tuner, ES series | ¥49,800 |
| SONY ST-S222ESX | FM/AM tuner, ES series | ¥37,000 |
| SONY SDP-777ES | digital surround processor, Pro Logic, Dolby Surround | ¥79,800 |
昭和62年10月（1987 October）
