Sony CDP-338ESD Compact Disc Player CD Player From Japan Used
Sony CDP-338ESD Compact Disc Player CD Player From Japan Used. Reading method Non-contact optical reading (using semiconductor laser). Laser GaAlAs double hetero diode. Rotation speed 200 to 500 rpm (CLV).
Playing speed 1.2m/s to 1.4m/s (constant). Error correction method Sony SuperStrategy. Number of channels 2 channels. Frequency Response 2Hz to 20kHz ±0.3dB. Total harmonic distortion ratio 0.0022% or less (EIAJ).S/N ratio 113dB or better (EIAJ). Dynamic range 100dB or more (EIAJ). Channel separation 110dB or better (EIAJ). Wah Flutter Less than ±0.001%W.
Digital output Coaxial:0.5Vp-p/75? Optical:-18dBm(emission wavelength 660nm).
Headphone output level 28mW(32? Dimensions: W470 x H125 x D375mm. Width 430mm when side wood is removed. Weight 12.5kg (including side wood).
This CD player inherits the design concept of the CDP-X7ESD. A digital sync IC is used to suppress jitter generated during digital signal transmission.
In the digital sync IC, the digital signal once generated by the signal processing LSI is timed to the precision of the master clock again just before the D/A converter. This means that the master clock, which determines the time axis accuracy of the signal, is directly connected to the D/A converter. By adjusting the timing to the accuracy of a clean master clock that contains no jitter, the digital signal is once again adjusted and output to the D/A converter.
Since the effects of jitter do not extend beyond the D/A converter, phase-accurate and faithful D/A conversion is possible. The digital filter is the CXD-1244, an 8fs 45-bit noise-shaping digital filter. This digital filter performs 8x oversampling, which increases the distance between the audio signal and unwanted high-frequency components by resampling the signal from 44.1kHz to 352.8kHz, eight times the sampling frequency. This allows the use of low-order low-pass filters with gentle cutoff characteristics in the analog section after D/A conversion, greatly improving group delay characteristics. In addition, the CXD-1244 achieves an in-band ripple response within ±0.00001dB and an echo level of -124dB or less by using 45 bits of high-order arithmetic capability. The CXD-1244 performs extremely high-precision operations with an arithmetic bit length of 45 bits. However, since a D/A converter can only have a finite number of bits, rounding errors occur and remain as quantization noise. To solve this problem, a high-resolution D/A converter with excellent characteristics is used, and noise shaping techniques are introduced and incorporated into the CXD-1244.Noise shaping incorporates the lower bits of information that would normally be lost due to rounding errors into the upper data by utilizing the time interval of oversampling. The digital de-emphasis function uses digital processing inside the digital filter to perform the de-emphasis processing that is conventionally performed in the analog circuitry, eliminating any degradation in sound quality caused by parts and circuits and achieving ideal gain and phase characteristics. The D/A converter IC is a high precision linear D/A converter.
This is a high-speed operation type corresponding to the data output speed of an 8fs digital filter, enabling more advanced D/A conversion. This improves the linearity of micro-level signals. The D/A converter is a single-chip IC with highly stable conversion operation and linear operation from the most significant bit to the least significant bit, so in principle there are no nonlinear elements in the input/output characteristics. This eliminates the need for additional circuits such as gain switching and simplifies the analog circuitry. Furthermore, the dual configuration with independent left and right channels eliminates phase shift between channels.
The audio circuitry after the D/A converter follows the signal flow in a twin mono configuration, eliminating phase shift and mutual interference between channels. The power supply section is equipped with two large, high-capacity transformers that independently palace the digital/servo and audio sections, thereby fundamentally eliminating interference via the power supply. International Buyers - Please Note. Thank you for your understanding.