Teac CD-P1120 Compact Disc Player, 1999, made in Japan

Link: tnt-audio | hifiengine

Specifications
Disc format: CD
Digital converter: 16 bit
Frequency response: 20Hz to 18kHz
Signal to Noise Ratio: 70dB
Channel separation: 80dB
Total harmonic distortion: 0.09%
Dimensions: 435 x 104 x 290mm
Weight: 3.5kg
Accessories: remote control

The transport makes use of a triple beam laser, 1-bit DACs and 4X oversampling with 16 bit output filters.
Everything is plastic except the bottom and the top cover of the cabinet, the latter being of the oddly U-shaped kind, prone to sound like a gong each time you touch it. Total weight is 3.5 kgs approx.

Teac Esoteric D-700 Multi D/A Converter DAC [Serial# 120086], 1992, made in Japan

Link: audio-heritage

Собран на: 4 x AD1862
Serial number: 120086

D / A converter paired with CD Transport P-700.

ZDII is adopted as the D / A conversion circuit.
In the case of a D / A converter, especially when the signal level or the signal level is -60 dB or less, the conversion error occurs and the resulting distortion occurs.
Distortion shaper ZDII uses a dither method to disperse and drastically reduce the conversion error of the D / A converter, realizing a significant ultra-low distortion rate. In addition, an extremely high S / N ratio has been obtained by using a unique wide area centralized (high-pass) dither. This enhances the reproducibility of minute signals and the expressive power of overtone components superimposed on large volume signals.

The 20-bit 8 times oversampling digital filter is adopted as a digital filter.
This makes it possible to use a low-pass filter with a gentle cutoff characteristic, thus improving the group delay characteristic.

The 1/16 shift 20bit4DAC is carried in the D / A conversion part.
In this DAC, the small signal emphasis type DAC of the 1/16 (digital offset) system which eliminates the MSB error originally occurring near 0V is adopted. This is reducing the 0 cross distortion which occurs when an input code passes 0V to 1/8 of the conventional system by shifting the 0V operating point of DAC by 1/16 of full scale.
Thereby, the linearity of the signal area (-18dB or less) where the music signal is concentrated is dramatically improved.

The cut core balance winding transformer is adopted as a power supply part. In this transformer, a magnetic field is canceled by dividing a winding into two equal parts and making each phase the opposite phase, and the harmful electromagnetic noise is suppressed to the minimum. In addition, because the windings are in parallel, self-inductance and DC resistance are also reduced, and excellent regulation is obtained.
Furthermore, the positive / negative independent balance power supply part which made the winding of positive power supply and negative power supply independent is constituted, and the ground potential is clarified.

Including digital transmission and analog transmission, balanced transmission is adopted for the main part.
Simultaneous transmission of not only positive-phase signals but also negative-phase signals cancels the ingress of noise into the ground line.

Not only key devices, but also audio-only parts originally developed, including capacitors and resistors, are used.
The power supply unit is equipped with a bridge rectifier circuit and employs a power supply unit capacitor equivalent to Esoteric, a reference series at the time. Furthermore, the occurrence of high-frequency noise that adversely affects sound quality is suppressed by the PCB substrate that has been subjected to double-sided shielding.

The rear panel of copper plating is adopted in order to eliminate the potential difference of the input and output which occurs at the time of D / A conversion, and the S / N ratio is eliminated about 6dB outside an audible band, and about 1dB in a band.

Teac CD-Z500 CD Player [2 x Philips TDA1541A – PD0050 - KSS-150A], 1989, made in Japan

Link: audio-heritage

Этакий ритейл ¥ 49,800 на год выпуска 1989 года.

Цап 2 x Philips TDA1541A – PD0050 - KSS-150A 

Model	CD player
Number of audio channels	2 channels
Frequency characteristic	1 Hz to 20 kHz ± 0.5 dB
S / N ratio	110 dB or more
Dynamic range	100 dB or more (1 kHz)
Harmonic Distortion Ratio	0.002% or less (1 kHz)
Wow · flutter	Measurement limit value or less (Crystal oscillator accuracy)
Channel separation	100 dB or more (1 kHz)
Analog output	Fixed: 2.0 Vrms  Variable: 2.5 Vrms
Digital output	Optical: -15 to -21 dBm
Pickup method	Objective lens drive, optical 3 beam
Objective lens drive system	2D parallel drive
light source	Semiconductor laser
wavelength	780 nm
Sampling frequency	44.1 kHz
Number of quantization bits	16 bit linear / channel
Transmission rate	4.3218 Mb / sec
Modulation method	EFM
Error correction method	CIRC
D / A converter	16 bit · 4 DAC + ZD II circuit
Digital filter	18 bit 8 times oversampling digital filter
Analog filter	Secondary Bessel Active Filter
Power supply	AC 100 V, 50 Hz / 60 Hz
power consumption	17 W
Outer diameter dimension	Width 435 x Height 119 x Length 290 mm
weight	5.0 kg
Attached	Remote control RC-352