Audio Database

SL-PS770D
Commentary

A compact disc player with Virtual Battery Operation and S-Advanced Mash Class A DAC.

The D/A converter is equipped with an S-advanced Mash Class A DAC.
This circuit consists of S-Advanced Mash and 3 LSI using two PWM outputs ICs. In the Mash section, fourth order noise-shaping circuit and digital de-emphasis circuit are built into the conventional Advanced Mash.
The 3-chip configuration separates the Mash LSI from the L/R channel PWM ICs to avoid digital noise and improve crosstalk between channels.
In addition, a Class A DAC is adopted for the D/A converter and the PWM output section is changed from conventional C-MOS to bipolar. This reduces the occurrence of through current due to sharp changes in current at the change point of pulse waveform, and suppresses the occurrence of overshoot and undershoot on the PWM waveform. This stabilizes the peak value of pulse and realizes an ideal PWM waveform.
In addition, clock jitter is reduced by placing the crystal oscillator close to the D/A converter.

A virtual battery operation power circuit is installed to prevent noise from the power supply and digital circuit.
During music playback, this circuit uses only the voltage charged in the capacitor as the reference potential and controls the gate of the FET to block noise from the power supply, thereby preventing noise from mixing with the audio signal.

It uses THCB (Technics Hybrid Construction Base) to reduce the adverse effect of vibration. Excellent vibration damping characteristics are obtained by the effective combination of steel plate and viscoelastic body. In addition, vibration from the floor is cut off by 4 insulators.
In addition, the optical deck mechanism is placed in the center of the system to control the vibration of the mechanism.

The electrolytic capacitor uses a mixed bamboo and fiber separator, enabling regeneration with less unwanted incidental sounds.

Digital servo is used in the servo circuit to adjust the amount of servo according to the different conditions of each disk, enabling stable drive and improving sound quality.

The disk tray uses a center mechanism with good weight balance and stability.

Equipped with digital optical terminal.

A gold-plated line output terminal is used.

Equipped with a peak search function.

It is equipped with an auto-queue function that automatically detects the position where the music actually starts and stands by and can start instantly.

Equipped with an A-B repeat that enables repeat performance in any section.

It is the length of the tape to be recorded, and it is equipped with a CD recording editing function capable of editing without sound interruption.

The output level can be adjusted in increments of 2 dB from 0 dB to -12dB.

Equipped with time fade and random play functions.

Equipped with a headphone level volume.

Wireless remote control is included.

Model Rating
Type CD Player
Frequency characteristic 2 Hz to 20 kHz ± 0.3 dB
Dynamic range 100 dB or more (EIAJ)
Signal-to-noise ratio 120 dB or more (EIAJ)
Total harmonic distortion factor 0.0023% or less (EIAJ)
Channel separation 110 dB or more (EIAJ)
Wow flutter Below Measurement Limit (EIAJ)
Headphone output level Max. 15mW/32 Ω (variable)
Pwer 100 VAC, 50Hz/60Hz
Power consumption 14W
External dimensions Width 430x Height 114x Depth 290 mm
Weight 4.0kg
Attachment Wireless Remote Control