Audio Database

DCD-1630G
Commentary

A CD player with a real 20-bit Λ (lambda) S. L. C (super linear converter).

Real 20-bit Λ S. L. C is mounted on the D/A conversion part.
In this circuit, digital data is divided into two systems by LAMBDA (Ladder-form Multiple Bias D/A) method using newly developed LSI. Digital bias is applied in plus and minus directions near the 0 cross point to shift, and in principle, the 0 cross distortion is eliminated.
As a result, at a low level, the digital data is processed at the digital data stage and converted into data without 0 cross distortion, and then D/A converted. Therefore, 0 cross distortion does not occur, and even if there is bit distortion, the distortion is reduced to 1/2 by the average of the two signals. In addition, at a high level, distortion may occur because the signal crosses the 0 cross point, but it is removed by the MSB correction of the super linear converter. In addition, at a momentary peak level (approximately 99.6% or more of the maximum level) that is almost absent in one piece of music, LAMBDA eliminates shift operations and uses the converter's dynamic range to the maximum extent to ensure a wide dynamic range.

The digital filter uses a 20-bit 8-times oversampling digital filter improve resolution, reduce requantization noise, and improve phase characteristics.

The analog circuits are independent on the left and right sides to prevent channel interference.

The pick-up section is strongly supported by structured Mechanical Fix Bracket corresponding to the BMC Mechanical Chassis in the DCD-3500 series.
In addition, the center of gravity is reduced by adopting a double structure in which a special viscoelastic sheet is sandwiched between two upper and lower steel plates for the top cover and a thick chassis with a triple structure for the bottom chassis.
Also, the top cover, which is easily affected by external vibration, is fixed with 4-point stops.

You can adjust the brightness of the display in 4 levels.

It is equipped with a remote control electric volume that can be used for headphones.

Equipped with a digital output.

Equipped with auto-edit / auto-space functions convenient for tape recording.

It is equipped with functions such as random play and program play of up to 20 songs.

There are 2 color variations of gold and black.

Wireless remote control is included.

Model Rating
Type CD Player
D/A conversion part system Real 20-bit Λ Super Linear Converter (Double D/A converter type)
Filter 8 x oversampling digital filter
Active analog filter
Frequency characteristic 2 Hz to 20 kHz
Signal-to-noise ratio 113dB
Dynamic range 100dB
Total harmonic distortion factor 0.002%
Channel separation 105dB
Interchannel phase difference 3 degrees or less
Output voltage Fixed : 2 V / (at 10k Ω load)
Variable : 2 V (at 10k Ω load)
Headphone jack Maximum output 10 mw (at 32 Ω load), Line variable output combined with Volume
Power supply voltage 100 VAC, 50Hz/60Hz
Power consumption 14W
External dimensions Width 470x Height 122x Depth 320 mm
Weight 10kg
Attachment Wireless Remote Control RC-217