CEC DA53
¥ 89,250 (tax included, sold in December 2004)
Commentary
D/A converter equipped with original LEF circuit and new technology current injection.
Current injection has a structure that can convert the current output signal into voltage without returning the voltage change to the output side of the previous stage in the conversion from the current output source to voltage.
By using this current injection in combination with a LEF circuit, it is possible to convert a current signal into a voltage signal and amplify and transmit it while suppressing sound quality degradation due to signal feedback.
In addition, since there is no unnecessary amplification stage or negative feedback, this method brings out the capabilities of the DAC chip, improves measurement specifications such as signal degradation and distortion, and also improves the power of musical expression.
Equipped with a LEF (Load Effect Free) circuit unique to CEC, it realizes sound quality improvement and high efficiency.
The DAC chip uses PCM1796 manufactured by Bar Brown.
By using two PCM1796 s for both L and R signals in mono mode, ultra-low distortion rate, high dynamic range and excellent channel separation can be obtained.
The PCM1796 features such as selection of frequency characteristics (flat / soft), reduction of distortion of an ultra-fine level signal by switching on / off dither, and fine adjustment of jitter and noise reduction by switching ⊿ Σ FS can be changed at the user's discretion.
Digital signal input is available up to 48 kHz for USB, 96 kHz for optical, and 192 kHz for coaxial balance.
All of these input terminals are converted to 24bit/195kHz and up-sampling prevents interference with the input signal and reduces noise.
There are two types of analog output jacks : unbalanced (RCA) and balanced (XLR).
Microphone input and headphone output are available only when using with USB.
It can be used for voice communication on a PC because voice signals can be exchanged between the PC and the USB.
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Model Rating
| Type | D/A converter |
| Digital input | Coaxial, Optical, USB AES/EBU (XLR, 1 = GND, 2 = HOT, 3 = COLD) |
| Audio Out | Balanced (XLR), unbalanced (RCA) |
| DAC | For RCA and XLR output : 2 x Bar Brown PCM 1796 Headphone output : PCM2906 manufactured by Bar Brown |
| ADC | Microphone input : PCM2906 manufactured by Bar Brown |
| Frequency characteristic | 10 Hz to 20 kHz ± 0.2 dB (sampling frequency 44.1 kHz) |
| Signal-to-noise ratio | 115 dB (44.1 kHz, 32 Fs) |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 5W |
| External dimensions | Width 217.5x Height 57x Depth 257 mm (excluding terminals and buttons) |
| Weight | 1.8kg |
| Attachment | AC cord |