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| Dual monaural D/A converter configured with eight circuits per channel and "35-bit D/A processing" capability. | |
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The D/A converter ICs of the D-02 incorporate top-end 32-bit AKM devices AK4399 chipsets," manufactured by ASAHI KASEI Microdevices Corporation. Eight circuits per channel are provided to achieve phenomenal linearity and low noise. In addition to direct processing of DSD signals, the D-02 has newly adopted a "35-bit D/A processing" algorithm that converts PCM signals to analog signals, at a high resolution of 35 bits, so the D-02 achieves an improved level of delicate sound quality with ultra high resolution. |
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The D/A converter circuits are mounted on separate analog audio boards for each of the left and right channels. All components, including the power circuits and power transformers, are separated for right and left channels to implement a fully dual monaural configuration. This identical layout per channel, achieves ideal power supply performance and excellent channel separation, enabling high-quality playback with a rich localization and sonic depth. Fully discrete Class A buffer circuit |
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The D-02 is configured with a fully discrete Class A buffer amplifier with four circuits per channel, using twice the amount of high-grade components used in the K series all-in-one players. This Class A buffer amplifier is used for the analog audio output circuits at the final stage. A "double-parallel full-balance output," that combines two buffer amplifier circuits for each channel of the hot/cold signal lines is used for the XLR audio outputs. Also, a "quadruple-parallel unbalanced output," is used for RCA audio outputs. |
| The D-02 offers an exceedingly high drive capability and slew rate by means of a low-distortion and high linearity Class A buffer amplifier configuration and a high-voltage toroidal core power supply unit of +/-22V, (which is provided independently for each channel). As a result, the D-02 provides stress-free playback for various signals, from very low-level signals to demand for high-power outputs. Wide-ranging D/D conversion functions for handling many source types The D-02 is provided with wide variety of D/D conversion modes for the PCM format, including x2, x4, and x8 up-conversion, and PCM-to-DSD conversion, as well as a conversion mode from the original sampling frequency. Four types of digital filters and digital filter OFF mode The D-02 is equipped with four types of digital filters for PCM signal processing. Two types of short-delay digital filters are provided in addition to two types of Finite Impulse Response (FIR) digital filters. These short-delay digital filters eliminate the pre-echo effect in the impulse waveform to reproduce a more natural audio signal without any delay. A digital filter OFF mode is also available. Five digital input systems for high sampling rate support The D-02 is equipped with wide-ranging digital inputs of five types for eight channels (XLR x2, i.LINK 4p/6p x1, USB x1, coaxial x2, and optical x1). The D-02 can be used for high-sampling-rate sources of up to 24-bit/192kHz. XLR x2 provides support for high-sampling-rate/high-bit inputs of 48-bit/192kHz (ES-LINK3) and 24-bit/384kHz (Dual AES 8Fs). USB input with asynchronous transmission and 24-bit/192kHz source support The D-02 uses Esoteric-original PC driver software to provide support for fully asynchronous transmission and input of high-sampling-rate sources of 24-bit/192kHz. The D-02 is also equipped with a USB isolator that prevents interference from a personal computer and other external devices in order to achieve high-grade playback of music files including studio master-quality source files. A 32-bit high-precision digital attenuator function This function enables volume control with no degradation of sound quality caused by dropouts by taking the advantage of a phenomenal 35-bit range. The D-02 can therefore be directly connected to a power amplifier. Excellent usability The D-02 can switch the output voltage of XLR audio outputs in accordance with the input sensitivity of the amplifier (0dB/+6dB). Either Hot 2 or Hot 3 can be assigned for XLR audio outputs. |
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| Analog audio output | Terminals | XLR (2 channels) | x 1 |
| RCA (2 channels) | x 1 | ||
| Output impedance | XLR | 100 Ω | |
| RCA | 47 Ω | ||
| Maximum output level (1 kHz, full scale, 10 kΩ) | XLR (Gain: 0 dB) | 2.45Vrms | |
| RCA | 2.45Vrms | ||
| Frequency response(when 192kHz PCM signal input) | 5 Hz to 55 kHz (.3 dB) | ||
| Signal-to-noise ratio (S/N) | 115dB | ||
| Total harmonic distortion | 0.0008% (1 kHz) | ||
| Digital audio input | XLR terminal | x 2 (both XLR1 and XLR2 connectors are used for Dual input) | |
| Input level | 5.0 Vp-p | ||
| Input impedance | 110 Ω | ||
| Dual connection Input sampling frequencies | 32-384.8 kHz, 16-24 bit Linear PCM (Dual AES format) |
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| 32-192 kHz, 16-48 bit Linear PCM (ES-LINK3 format) |
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| DSD (ES-LINK1, ES-LINK2 format) | |||
| Single connection Input sampling frequencies | 32-192 kHz, 16-24 bit Linear PCM(AES/EBU format) |
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| DSD (ES-LINK1, ES-LINK2 format) | |||
| RCA terminal | x 2 | ||
| Input level | 0.5 Vp-p | ||
| Input impedance | 75 Ω | ||
| Input sampling frequencies | 32-192 kHz, 16-24 bit Linear PCM (IEC60958 format) |
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| Optical digital terminal | x 1 | ||
| Input level | 24.0 - .14.5 dBm peak | ||
| Input impedance | 75 Ω | ||
| Input sampling frequencies | 32-192 kHz, 16-24 bit Linear PCM (IEC60958 format) |
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| i.LINK (AUDIO) terminal | x 2 (6-pin, 4-pin) S400 | ||
| Input sampling frequencies | 32-192 kHz, 16-24 bit Linear PCM | ||
| DSD | |||
| USB port . B connector | x 1 | ||
| Input sampling frequencies | 32-192 kHz, 16-24 bit Linear PCM | ||
| PLL2 locking range | Lockable frequency range | ±5 ppm for each sampling frequency | |
| Clock output | BNC connector | x 1 | |
| Output level | equal to TTL level (into 75 Ω load) | ||
| Output frequency | 44.1, 88.2, 176.4, 48, 96, 192 kHz,22.5792, 24.576 MHz | ||
| same frequency as input (when output set to thru) | |||
| Output frequency precision | ±0.5 ppm (when shipped new) | ||
| Clock input | Terminal | BNC ×2 (WORD IN, 10MHz IN) | |
| Input impedance | WORD IN | 75 Ω | |
| 10MHz IN | 50 Ω | ||
| Input frequency compatibility | WORD IN | 44.1, 88.2, 176.4, 48, 96, 192 kHz 22.5792, 24.576 MHz (±5 ppm) |
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| 10MHz IN | 10 MHz (±5 ppm) | ||
| Input level | WORD IN | equal to TTL level | |
| 10MHz IN | 0.5.1.0 Vrms sine wave | ||
| General | Power supply | AC 230V 50Hz AC 120V 60Hz AC 220V 60Hz |
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| Power consumption | 14 W | ||
| Dimensions (W x H x D) | 445 x 162 x 438 mm (17 1/4” x 6” 3/8 x 13 1/4”) |
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| Weight | 27.4 kg (60 2/5 lbs) | ||
| Accessories | Power cord x 1 Felt pads x 4 Warranty card x 1 Owner's manual x 1 |
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