What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

Sony CDP 705ESD (1987-1989)

The ES Series:
The next step in digital audio, from the creator of the compact disc.
Sony has been the leader in both professional and home digital audio for over a decade. With such breakthroughs as PCM processors, Compact Disc Players and Digtal Audio Tape recorders. Now, the Sony ES engineerss, a dedicated group who are above the compromise between technology, convenience and price, have created the ES Series. Each component in the ES Series represents an ES engineer's dream. Once you.ve heard them, you'll want to own them.

The ES Series: Proof positive that Sony is still the leader in digital audio.
When the ES engineers created the ES Series, they had permanence in mind. These components will please their owners for years to come. All ES components, including our integrated amplifiers, tuners, cassette decks and digital processors, are designed with meticulous detail and built with extreme care. That's why Sony backs each ES component with a three-year parts and labor limited warranty.

The CDP-705ESD:
A new benchmark in a series of reference standard Compact Disc players.
like all the new Sony ES Series CD Players, the 705ESD offers 4X oversampling and full 16-bit dual D/A converters. But as an ES Digital component, the 705ESD must provide even more. Such as special waveform shift circuits that avoid crossover and notch distortion at low voltage levels for superb linearity. Or an advanced digital-to-analog converter deglitcher that improves music resolution at all listening levels. Most important of all , the 705ESD has a direct digital output stage for the digital needs of tomorrow.
Direct Digital Output: A Sony first that connects the present to the future.
In 1985, Sony pioneered the concept of processing data through an outboard D/A converter, to avoid the normal restrictions imposed by chassis size, signal path integration and heat degradation. Now, any digital music source can be reproduced with more depth, detail and imaging than ever before.
4X oversampling digital filter; 16-bit dual D/A converters; deglitcher stage; Unlinear Converter "master clock"; linear phase filters; Error Prediction Logic; aspheric optical lens; Linear Motor tracking; low-resonance G-Chassis; dual power transformwrs; Optical Transfer stage; digital output

System: Compact Disc digital audio system
Disc: Compact Disc
Laser: Semiconductor laser (λ = 780nm)
Laser output: Max. 0,4 mW
Spindle speed: 200 rpm to 500 rpm (CLV)
Scan velocity: 1,2 - 1,4 m/sec.
Error correction: Sony Super Strategy Cross Interleave Reed Solomon Code
Number of channel: Two
D/A conversion: 16-bit linear
Frequency response: 2 - 20,000 Hz ±0,3 dB
Signal to noise ratio: More than 106 dB
Dynamic range: More than 97 dB
Harmonic distortion: Less than 0,0025% (1 kHz)
Channel separation: More than 100 dB (1kHz)
Wow and flutter: Below measurable limit
Output jacks:
Max.output level: 2 V (50 kΩ)
Load impedence: More than 10 kΩ
Output impedance: 200 Ω
Max. output level: 0 - 2 Vrms (50 kΩ)
Load impedance: More than 30 kΩ
Output impedance: 200 - 2,5 kΩ
Max. output level: 0,5 Vp-p
Load impedance: 75 Ω
Output impedance: 75 Ω
Max. output level: 28 mW (variable, max)
Load impedance: 32 Ω
Track pitch: 1,6 μm
Sampling frequency: 44,1 kHz
Quantization: 16 bit linear quantizing/channel
Modulatio system: EFM
Transfer rate: 2,03 Mbit/sec. (before modulation)
Power requirements: 120 V AC, 60 Hz
Power consumption: 20 W
Power requirements: 220 - 240 V AC, 50 Hz
Dimensions: 430 x 125 x 395 mm, (17 x 5 x 15⁵⁄₈ inches)
Weight: 14,1 kg, (31 lb 1 oz) net

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