DAC Esoteric D-07

Convertidor digital / analogico. Entradas  USB,  2 digital coaxial y  2 optica, word sync. Salidas RCA/XLR. Excelente calidad de sonido.

El Esoteric D-07 dispone del convertidor D/A Asahi kasei microdevices AK4392 de ultimísima generación doble monofónico con 32 bits, empleado en el campo profesional, y de entradas USB compatible con grabaciones PCM a 24 bits 96 kHz descargadas directamente desde Internet. Dispone además de tomas digitales SP/DIF, AES/EBU y EIAJ-TosLink, todas ellas soportan señales PCM de 24 bits/ 192kHz procedentes de mecánicas de transporte, disco duro de ordenador etc y salidas analógicas balanceadas y no balanceadas. Su diseño, considerado como el tope en cuanto al tratamiento de las señales digitales de audio, permite también la conversión de formato, por ejemplo PCM a DSD, y remuestrear señales 2/4 veces la frecuencia de muestreo. Dispone también de filtros digitales (con reducción de pre-eco incorporada) y de una entrada “Word sync” para sincronizar con un reloj externo o cualquier otro dispositivo que permita la interconexión para sincronizar las señales musicales además del propio PLL (1 y 2) que permite ajustar la fase y reducir el jitter de aquellos dispositivos si no disponen de la citada Word sync. También permite la conexión directa a etapas de potencia al disponer de un atenuador de alta precisión que regula la salida analógica.

32bit D/A converter strives for the highest quality To achieve that perfect sound, the D-07 uses the Asahi Kasei Microdevices Corporation's AK4392 (*1) DAC device. It also comes equipped with an in-house developed high-speed and high-performance digital signal processing section, and an improved analog section for receiving processed data. The 32bit processing capacity is maintained throughout the unit, from the input I/F and the digital filter, to the Delta-Sigma modulator. The digital computing section provides high-precision computing, even if data below 24bit is input, helping to produce that high sound quality. In the analog section, the layout of channels is completely symmetrical, and a dedicated power supply is used for each circuit. This helps to prevent cross channel interference. The internal master clock is also equipped with a dedicated power supply, thus minimizing effects caused by jitter. Dual mono configuration from the DAC to the audio output This configuration follows ESOTERIC's proven dual mono configuration. It contains separate DAC devices and analog audio circuits on each L/R, and the same parts positioned on the same path. To reduce crosstalk between channels, the same parts are positioned in the same pattern for each L/R on the board. This minimizes differences in sound quality between L/R to ensure superior channel separation. This allows you to experience high-definition playback with a rich sense of localization and depth. XLR audio output is set up in fully balanced configuration, allowing you to select between HOT (pin=2) and HOT (pin=3). You can also select from the analog outputs (RCA/XLR/OFF). *For simultaneous output mode (RCA & XLR), output is fixed to HOT (pin=2). An abundance of digital inputs lets you connect to a variety of devices The D-07 comes with four types of inputs (USB, XLR, COAX and OPTICAL)/ five systems of digital input, enabling you to connect to a wide range of devices. The XLR (AES/EBU) input can connect with ESOTERIC P-05 to support Super Audio CD transports. Except for USB, all of these inputs systems support 24bit/192kHz PCM. USB input enables high-quality playback from your PC The USB input makes it possible to playback music stored on your PC with high-end quality. All 24bit/96kHz PCM high-resolution music files can be transmitted to the D-07, and played back in compressed or uncompressed formats. *Playable formats differ, depending on your PC's music player. USB isolator The built-in USB isolator isolates the power/signal line from the unit, and prevents external noise interference from other devices such as a PC. This enables clear playback without losing the benefits of high-resolution music files. Extensive up-conversion functions for a variety sources PCM digital audio signals can be converted in a number of ways, including PCM up-conversion at 2× (64/88.2/96 kHz), 4× (128/176.4/192 kHz), and even to the DSD high-res. conversion format. Two types of digital filters For processing PCM format signals, the D-07 offers two types of digital filters that you can freely select: the finite impulse response (FIR), digital filter, which has an established reputation for superb sound quality; and a newly developed, short delay digital filter, which removes the pre-echo effect in the impulse waveform, helping to reproduce the leading edge of the sound more naturally. WORD SYNC enables synchronized playback with external devices WORD SYNC effectively reduces jitter that occurs while transferring audio signals, delivering high-speed and high-quality sound that is delicate yet full of presence. This function also offers the word output mode, which enables WORD SYNC-capable source devices to connect with the word output generated by the D-07. Likewise, there is also a word input mode, which inputs a high-density word clock from an external master clock generator (such as an ESOTERIC G-03X). This incremental (and optional) hardware mode enables you to upgrade to a more sophisticated system at a later time. 2nd PLL mode helps to reduce jitter The D-07's 2nd PLL mode uses the built-in VCXO (Voltage Controlled Crystal Oscillator) to act as a high clarity master clock for the DAC device. The two types of PLL circuits, each with different characteristics, effectively remove transmission jitter. If a signal is input from a device without WORD SYNC, the jitter component that affects the sound quality is diminished, thus achieving more precise playback with rich musical expression. 32bit high density digital attenuator High-precision volume adjustment is made possible by our 32bit digital processing and the 32bit D/A device. Compared to a 24bit device, this attenuator has an additional 8bit of "headroom,” allowance, delivering volume control without a loss of sound quality caused by dropouts. It also enables you to directly connect the D-07 to power amplifiers and use it as a multi-source digital preamplifier. Solid enclosure that perfectly guards sound quality and provides anti-resonance barriers; an exquisite construction The D-07's slim enclosure that stands only 103.5 mm tall (4 inches), incorporates a short-scratch finished, thick aluminum front panel and sandblasted 5 mm aluminum top and side panels. Internal construction isolates all points of potential signal interference and resonance. The sculptured art generated by the screwless top panel and the rounded corners creates a sense of sophisticated integration that is consistent with ESOTERIC's high-end products. *1 "AK4392” is Asahi Kasei Microdevices Corporation's Audio4proTM and brand product. The AK4392 is designed for professional digital audio devices. "Super Audio CD” and "DSD” are registered trademarks.