Audio Database

Image of the PD 737
Commentary

This CD player was born by inheriting the high sound quality concept of the high-grade machine and polishing the multi-function.

Equipped with newly developed intelligent digital servo to realize accurate pickup.
This is a digital version of all the servo circuits required for the signal pickup. Even if the signal level drops due to the aging of the pickup, highly stable playback is achieved by automatically setting the appropriate servo for each disc.

In the D/A converter, a high-precision one chip real 18 bitLSI is adopted for both left and right sides. By this, it can be used simply and straight to bring out the unique taste.
Moreover, a linear envelope D/A converter is mounted, and in order to keep the error of D/A conversion low, the left and right MSB are adjusted independently to reduce the 0 cross distortion of each channel.
The digital filter uses an 8 fs LSI with an operation word length of 20x22-bit to enhance fidelity.

CD direct construction is used to minimize the signal path.
In addition to the simple and straight layout, the digital servo circuit reduces the number of parts to reduce interference between signals. The power supply circuit also minimizes the transmission path and balances the ± power supply to eliminate interference with the signal flow.

A bifilar winding is used to improve the balance accuracy between the ± voltage of the power supply and the output impedance of the power supply by simultaneously winding the + and - wires into the winding for the audio circuit of the power supply transformer, thereby enabling stable driving.
In addition, 4 independent windings, 4 independent power supplies and 7 regulators are adopted to prevent mutual interference.

The honeycomb chassis, which is highly effective against low-frequency external vibration, is covered with an ultra-fine pile of electrostatic bristles. This reduces reflection from high-frequency floors and fine vibration of the honeycomb chassis surface.
In addition, by adopting side wood, resonance elimination and high rigidity of the whole cabinet are enhanced.

It is equipped with an auto program edit function in which the microcomputer automatically programs according to the order of songs when the tape time is set, a computer program edit function in which the microcomputer automatically programs the order of songs according to the tape time, and a time fade edit function in which you can specify the desired time with the 10 key button and it automatically fades out at that time and becomes a pause.

It is equipped with a time location function, and by specifying the place you want to listen in the performance time, it automatically searches and starts the performance.

Equipped with a display on/off switch to suppress noise generation.

It is equipped with a program random play function in which the microcomputer randomly selects the order of all songs and plays them.
It also has a music window function that automatically plays your favorite phrases one after another.

Equipped with a deck sync function for one touch tape editing, it can be used with Pioneer's cassette deck with CD-DECK sync mark.

Model Rating
Type CD Player
Pick-up Three beam semiconductor laser system
Frequency Response (EIAJ) 2 Hz to 20 kHz ± 0.5 dB
Signal-to-noise ratio (EIAJ) 110 dB or more
Dynamic Range (EIAJ) 98 dB or more
Channel Separation (EIAJ) 106 dB or more
Wow & flutter (EIAJ) Measurement limit (± 0.001% W. PEAK) or less
Total Harmonic Distortion Factor (EIAJ) Not more than 0.0025%
Output voltage 2.0V
Number of channels 2 channels (stereo)
Digital output Coaxial Output : 0.5Vp-p/75 Ω
Optical output : -15dBm ~ -20dBm (wavelength 660 nm)
Pwer 100 VAC, 50Hz/60Hz
Power consumption 12W
External dimensions Width 459x Height 124x Depth 324 mm
Weight 7.4kg
Attachment Remote control