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 TA-E77ESD (1987-1989)

The ES Series:

The next step in digital audio, fromthe 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 TA-E77ESD:

The future of digital signal processing.

The TA-E77ESD preamplifier provides three digital inputs for direct interfacing with both current and future digital components, plus decoding at three different sampling rates. It also has a digital processing loop for high-quality recording. The 4X oversampling, 16 -bit, dual D/A converters are totally shielded in a copper subchassis that prevents spurious noise from affecting the analog circuits. Direct coupling of the D/A converter simplifies the signal path and minimizes internal interference.

The TA-E77ESD includes many features that are difficult to find on other preamplifiers at any price. Even a programmable infrared Remote Commander that controls any brand of audio and video component with infrared operation.


Decodes 32kHz/44,1kHz/48kHz sampling rates; 3 digital inputs;digital output stage; digital processing loop; 4X oversampling digital filter; 16-bit dual D/A converters; copper-shielded subchassis;direct-coupled D/A stage; low-resonance G-Chassis; separate audio/video signal paths; high-resolution (S-video) input/output terminals; REC OUT selector


Total harmonic distortion: 0,001% (at rated 20-20,000 Hz output)

Intermodulation distortion (60 Hz : 7 kHz = 4:1): 0,001% (at rated output)

Residual noise: Less than 10μV (network A)

Requency response:

PHONO MM: RIAA equalization curve ±0,2 dB

TUNER, CD, TAPE, VIDEO, ADAPTOR IN: 3 Hz - 300 kHz +0 -3 dB

Input sensitivity:

PHONO MC 3 ohms: 0,17 mV, 100 ohms,

PHONO MC 40 ohms: 0,17 mV, 1 kohm

PHONO MM: 2,5 mV, 50 kohms


Max. Input capability (1 kHz):

PHONO (1 kHz, THD 0,003%): 9 mV (MC); 150 mV (MM)

S/N (network):

PHONO MC (0,5 mV): 83 dB

PHONO MM (5 mV): 95 dB


Output voltage impedance:

REC, VIDEO, DAT, ADAPTOR: 150 mV 1 kohm

HEADPHONES: 45 milliwatts at 8 ohms (accepts low and high impedance headphones)

PRE OUT: 1,5 V, 47 ohms G-AEP model : 1,5 V 200 ohms

Tone controls:

BASS at 100 Hz: -4 +3,5 dB (turnover freq. 200 Hz); -6 +7 dB (turnover freq. 400 Hz)

TREBLE at 10 kHz: -7,5 +7 dB (turnover freq 3 kHz); ±3,5 dB (turnover freq. 5 kHz)

Subsonic filter: 6 dB/octave attenuation below 15 Hz


Input: Voltage 1 Vp-p, impedance 75 ohms

Output: Voltage 1 Vp-p, impedance 75 ohms

S-Video IN, VIDEO 1, 2:

Luminance signal: Voltage 1 Vp-p, impedance 75 ohms

Chroma signal: Voltage 0,286 Vp-p, impedance 75 ohms


Luminance signal: Voltage 1 Vp-p, impedance 75 ohms

Chroma signal: Voltage 0,286 Vp-p, impedance 75 ohms


Digital input (phono jacks): Impedance 75 ohms, input level (sensitivity) 0,5 Vp-p ±20%

Digital output: Impedance 75 ohms, output level (voltage) 0,5 Vp-p ±20%


System: low-noise FET high gain NFB type equalizer amplifier, low noise FET, Double-stage differential, push-pull output, flat amplifier passive type direct tone control

Number of channels: 2 (stereo)

Demodulation (D/A conversion): 16-bit linear

Frequency response: 5 Hz - 20 kHz ±0,5 dB (input digital signal sampling freq. 44,1 kHz, 16-bit operation)

Harmonic distortion: Less than 0,004% at 1 kHz (input digital signal sampling freq. 44,1 kHz, 16-bit operation)

Dynamic range: More than 95 dB ( input digital signal sampling freq. 44,1 kHz, 16-bit operation)

Channel separation: More than 90 dB

Power requirements: 120, 220-240 V AC, 50/60 Hz

AC outlets: 400 W max.

Dimensions: (W x H x D) 470 x 130 x 370 mm, (18½ x 5¼ x 14½ inches)

Weight: 13 kg, (28 lb 11 oz)

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