DENON DCD-1650AR

Commentary

A CD player with ALPHA processor and real 20-bit Λ S. L. C.

It is equipped with ALPHA processor which is a unique waveform reproduction technology.
This circuit reproduces 16-bit data with 20-bit quality by interpolating digital CD data to approximate the analog waveform that existed in the natural world. In addition, when a CD with a different recording method such as music data with unnecessary bands cut off during recording or pulse data of a test CD is applied, the cutoff band is automatically adjusted based on the input signal. This reduces quantization distortion and realizes more realistic sound.

The D/A converter is equipped with Λ S. L. C.
This D/A converter is equipped with DENON's unique Λ processor inside the chip to improve sound quality by further increasing precision.

A hybrid configuration loader is used for the tray part.
In this system, the disc tray is coated with a protein-containing paint, which reduces unnecessary vibration of the reduces unnecessary vibration of the disc tray. In addition, a lightweight and highly rigid aluminum die-cast shaft receiver is used for vibration suppression, and a plate is attached to the lower part of the lower part of the tray to improve the deformation of the disc due to the rotation of the disc.
This ensures stable rotation and absorption of vibration, enabling more accurate signal reading.

A bearing is used in the main body of the tray rail to realize smooth tray drive. This not only provides accurate tray storage but also ensures that the tray is held securely to minimize the effect of vibration on sound.

The servo circuit is equipped with a digital servo.
By digitizing, it is possible to set the optimum servo according to the disc to be reproduced.

The power supply has a dual transformer configuration, and the digital and audio transformers are mounted independently to suppress signal degradation due to mutual signal interference.
In addition, an extra-thick power cord of the inlet type is used to lower the impedance of the power supply.

Two digital output systems are mounted : optical and coaxial.
Two analog outputs, fixed and variable, are installed.

Wireless remote control is included.

Model Rating

Type	CD Player
D/A conversion part system	Real 20-bit Lambda Super Linear Converter
Filter	20-bit 8 x oversampling digital filter + GIC 3rd-order analog filter
Frequency characteristic	2 Hz to 20 kHz
Signal-to-noise ratio	118dB
Dynamic range	100dB
Total harmonic distortion factor	0.0018%(1kHz)
Channel separation	110dB(1kHz)
Digital output	Optical output : 1 system Coaxial output : 1 system
Analog output voltage	Fixed : 2V/10k Ω Variable : 0.2 ~ 2V/10k Ω
Pwer	100 VAC, 50Hz/60Hz
Power consumption	20W
External dimensions	Width 434x Height 135x Depth 340 mm
Weight	11.9kg
Attachment	Wireless Remote Control