Description
This device is a used product. The CD is recognized well. Some buttons are erased. The only component is the body in the photo. The newly developed IC is a high-speed type that corresponds to the signal processing speed of the digital filter. It reduces the 0 cross distortion at the minute signal level and strictly eliminates the jitter component from the converter output. This eliminates not only the L/R switching circuit but also the sample-and-hold circuit, which was indispensable in the past, and makes the audio circuit extremely simple. The low-pass filter uses a third active filter that reduces sound quality degradation, and the all-stage L/R twin-mono configuration eliminates channel interference. The parts used have been carefully examined for sound quality. In addition to high-sound operational amplifiers, copper-heat sinks, and screws, high-sound condensers, gold-plated terminals, and oxygen-free copper power cords with polarity display are used. The power supply circuit uses 9 independent stabilized power supplies. In addition to separating the digital and analog circuits, the power supply for the digital filter and the D/A converter has been dedicated, and the display and other devices have been separated Route 3 to eliminate voltage drops caused by disturbance of the servo power supply and interference with analog circuits such as harmonics of the digital signal. In addition, the capacitors used in power transformers and rectifier circuits are large and have a large capacity that far exceeds the required capacity. The base unit, which is the base of the optical system mechanism, uses a black cemented base unit. This is a composite molding of metal and special resin containing ceramic powder with extremely high internal loss. The resonance sharpness is greatly reduced and the rigidity is also increased to completely suppress the generation of vibration. The entire base unit has a floating structure to block the transmission of vibration from the outside. In addition, the chucking arm that secures the disk to the spindle has a double structure of resin and metal, and aerodynamic measures are also taken to prevent surface wobbling when the disk rotates. The chassis consists of an external chassis and an internal chassis to ensure high strength and rigidity. In addition, the mechanical block part, digital, analog part and control system are separately arranged to eliminate interference and resonance of each part as much as possible. In addition, a special large insulator made of non-resilient rubber and resin is used for the leg part to eliminate vibration transmission from the outside. The servo circuit is equipped with S servo, a newly developed predictive control method. The operating principle of S servo is that when a newly developed RFIC detects signal dropouts caused by scratches or dirt, a microcomputer calculates from the disk rotation cycle to predict when the next dropout will occur, and controls the servo amount of both tracking and focus servo circuits just before the dropout occurs to minimize the occurrence of errors. The predicted time accuracy of the S servo is as high as 1/8,000 second. In addition, it is compatible with CLV (constant linear velocity) and maintains this accuracy at any position inside or around the disk. This improves the tracing capability compared to the conventional method in which the servo amount is controlled after the drop-out occurs. In addition, since the disturbance of the servo current is greatly reduced, the influence on the analog system generated through the power supply is also reduced. High-speed linear motor tracking mechanism is adopted for the mechanism part. In this mechanism, a linear motor is integrated into the optical block, enabling high-speed access with less than one second in the selection time from the first song to the start of the final song. In addition, reliability and durability are greatly improved because there is no transmission mechanism such as gears. A latched digital output is used for the digital output section. In addition to the use of an isolation pulse transformer, the analog output is cut during digital output and the digital output is cut during analog output to prevent mutual interference. The output terminal of CDP 333 esd is designed to output subcode information as well. Equipped with a centralized display, you can check the time and performance information in various ways. In addition, it is equipped with Sony original music calendar, and the track number of the recorded music can be directly displayed up to 20 songs. One touch direct music selection with 20 keys is possible. It is equipped with an RMS function that can program up to 20 songs. This RMS function can add or change programs while playing. Equipped with 5-mode repeat function of 1 track / ALL/A-B (between parts) / program / shuffle. In 4 modes except A-B, the repeat count can be specified up to 9 times. Features such as shuffle play, index search, AMS (, AMS (automatic music sensor) and music search. Equipped with an auto-pause function that automatically enters a pause state at the end of each song. Equipped with an auto space function that automatically sets the interval between songs to 3 seconds. The auto space function is always activated when the program is played back. Equipped with timer switch, alarm clock playback is also possible by using separately sold timer. Equipped with a headphone port with volume. Wireless remote control is included. Model Rating TypeCD PlayerReading systemNon-contact optical reading (using semiconductor laser)LaserGaAlAs double hetero diodeNumber of revolutions200 ~ 500 rpm (CLV)Error correction methodSony Super Strategy Cross Interleaved Read-Solomon CodeNumber of channels2 ChannelCompound16-bit straight lineFrequency characteristic2 Hz to 20 kHz 0.3 dBTotal harmonic distortion factor0.0025% or less (EIAJ)Signal-to-noise ratio106 dB or more (EIAJ)Dynamic range97 dB or More (EIAJ)Wow and flutterBelow the measurement limit ( 0.001% W. peak) (EIAJ)Output level2Vrms(MSB)Headphone output level28 mw (32 )Digital output level0.5Vp-pPower consumption15WExternal dimensionsWidth 430x Height 110x Depth 340 mmWeight8.2kg
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