64bit Monaural-block D/A Converter

Grandioso D1

A separate type D/A converter

Grandioso D1
Grandioso D1

64bit Monaural-block D/A Converter

Grandioso D1

FEATURES

This model has been discontinued.

A monaural configuration for the ultimate evolutionary step toward the ideal stereo
Grandioso D1

The D1 follows the monaural configuration of the D-01, which we introduced in 2004 as the world's first monaural D/A converter. The D-01 was developed with the goal of attaining the highest level of channel separation and the ideal power supply to each channel. In the new D1, we have introduced the latest technology and further enhanced the design. The right and left channels can now be link-connected with a single HDMI cable (provided), and easy input from external source devices is possible. With the D1, you can enjoy a world of incredible stereo with the rich stereo image and sonic depth that is only possible with a monaural configuration.

Outstanding sound quality with 36-bit processing resolution
Grandioso D1
Aiming for the pinnacle of sound quality, we have incorporated the AK4495S, a state-of-the-art 32-bit DAC device developed by Asahi Kasei Microdevices Corporation. Sixteen circuits per channel are provided to achieve phenomenal linearity and low noise. In addition to direct processing of the DSD signal, a new 36-bit D/A processing algorithm has been adopted for analog conversion of the PCM signal at 36-bit resolution. The result is fine, smooth sound quality as along with high resolution.

 

Grandioso D1
Grandioso D1
ESOTERIC-HCLD*: ESOTERIC's own output buffer circuit featuring fortified current transmission
Grandioso D1

A high-speed current transmission capability is the most important factor of an analog output circuit for transmitting a wide dynamic range of music signals downstream without deficiencies. For the ultimate performance as a line driver, the output buffer amplifier circuit of the D1 makes extensive use of materials and is configured with its own board separate from the D/A converter. The current output capability is high, and the high-performance elements adopted for the slew rate, which indicates response speed, boast the incredibly high speed of 2000V/㎲. The ability to supply instant current is maximized with an extravagant buffer circuit configuration utilizing one circuit for RCA output and one circuit each for hot and cold connections for XLR output. With the ESOTERIC-HCLD, the D1 reproduces the dynamism of music with breathtaking reality.
*HCLD=High Current Line Driver

Large toroidal transformers boasting high speed and surplus power supply capacity

Two large toroidal power supply units are installed for the digital and analog circuits, enabling high-efficiency and high-power drive operation in addition to low noise and low distortion. Stable and clean power is supplied to each circuit block by strong power supply circuits incorporating multiple large capacitors.

Grandioso D1

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Grandioso D1

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High sound quality through the separation of digital and analog circuits

D All analog circuits (DAC circuit analog portion, HCLD buffer circuit, etc.) are electrically separate from the digital circuits. This further enhances the clarity of sound quality by preventing the intrusion of digital noise.

Wide-ranging D/D conversion functions to handle many source types

In addition to playback in the original sampling frequency, the D1 has functions for x2, x4, and x8 up-conversion of PCM digital signals. There are also various D/D conversion modes for PCM format (PCM-to-DSD conversion function, etc.).

Seven types and eight channels of digital input that support high sampling rates

To enable connection to an extensive range of devices, the D1 is equipped with wide-ranging digital inputs of seven types and eight channels (ES-LINK x 1, XLR x 1, i.LINK 4p/6p x 1, USB x 1, coaxial x 2, optical x1), and can be used for high-sampling-rate sources of up to 24-bit/192kHz. In addition, XLR x 2 supports high-sampling-rate/high-bit inputs of 48-bit/192kHz (ES-LINK3) and 24-bit/384kHz (Dual AES 8Fs).

New ES-LINK4 enables broadband transmission
Grandioso D1

SOTERIC has developed an original, state-of-the-art transmission format called ES-LINK4, which allows DSD and 352.8kHz/48bit PCM ultrawideband digital transmission using an HDMI cable. ES-LINK4 performs a large part of the digital signal processing on the sending side, greatly reducing the digital signal processing load on the D/A converter. In addition to ultra-wide bandwidth, we sought high sound quality through our "Pure D/A" concept, in which the D/A converter specializes in its original function of D/A conversion processing.

A new dimension of isolated clock technology

The clock circuit, which supplies highly accurate reference clock signals to a digital circuit, can be considered the core unit of a digital player. The clock circuit of the P1 and D1 is completely independent of other circuits, including its power source and ground, enabling pure clock signals to be supplied to the system. The voltage controlled crystal oscillator (VCXO) was developed especially for the P1 and D1 in a joint effort with Nihon Dempa Kogyo (NDK), a major manufacturer of crystal oscillators. For a high-precision custom clock device worthy of leading models, high sound quality playback is provided thanks to an extremely low level of phase noise and a crystal element that is even larger than before.

High-accuracy clock sync
Grandioso D1

Shown with the Grandioso D1 (a pair of Mono Block D/A Converters) on the left, and the Grandioso P1 (a combination of player unit and power unit) on the right.

Jitter is reduced by connecting the P1 and D1 with a BNC cable for clock sync (synchronized playback). ESOTERIC's original technology for direct master clock linkage without Phase-Locked Loop (PLL)* is also supported. This technology enables pure clock processing, achieving a clear and accurate stereo image and ultra-clear sound quality.
An even more sophisticated level of system operation is possible by connecting the high-precision G-01 rubidium master clock (sold separately). This master clock supports clock sync for a variety of frequencies to suit your sound-quality preferences, including master clocks (22MHz/10MHz) and WORD clocks (44.1kHz/88.2kHz/176.4kHz).
*This master clock is a digital audio output reference clock (22.5792MHz) generated within the high-accuracy clock module of the D1. The system also uses this master clock as the clock of the digital output circuit supplied directly to the P1 without passing through the P1's internal PLL circuit. It also supports the LINK 10MHz direct master clock using the 10MHz clock supplied from the G-01 (sold separately).

Seven types and eight channels of digital input that support high sampling rates
Grandioso D1

To enable connection to an extensive range of devices, the D1 is equipped with wide-ranging digital inputs of seven types and eight channels (ES-LINK x 1, XLR x 1, i.LINK 4p/6p x 1, USB x 1, coaxial x 2, optical x1), and can be used for high-sampling-rate sources of up to 24-bit/192kHz. In addition, XLR x 2 supports high-sampling-rate/high-bit inputs of 48-bit/192kHz (ES-LINK3) and 24-bit/384kHz (Dual AES 8Fs).

USB input supporting 32-bit/384kHz PCM, 2.8/5.6MHz DSD, and asynchronous transmission

The D1 comes with USB input supporting asynchronous transmission and rates up to 32-bit/384kHz PCM and 2.8/5.6MHz DSD. Using ESOTERIC's original PC driver software, the D1 achieves high-grade playback of even studio-master-quality source files. DoP and ASIO 2.1 are also supported.
*Mac is supported only by the standard driver DoP method.

Excellent usability

Either Hot 2 or Hot 3 can be selected for the pin assignment of the XLR audio output.

List of Awards

Grandioso D1 the absolute sound
Editors' Choice Awards 2019
Grandioso D1 the absolute sound
Editors' Choice Awards 2018
Grandioso D1 SoundStage! Network
Reviewers' Choice
Grandioso D1 Ongaku no Tomo Sha Corporation
STEREO Best Buy Component 2016
Digital Player category (over JPY700k) 1st place*
Grandioso D1 Ongaku no Tomo Sha Corporation
STEREO Best Buy Component 2015
Digital Player category (over JPY700k) 1st place*
Grandioso D1 Ongaku no Tomo Sha Corporation
STEREO Best Buy Component 2014
Digital Player category (over JPY700k) 1st place*
Grandioso D1 Ongaku no Tomo Sha Corporation
STEREO Best Buy Component 2014
D/A Converter category (over JPY300k) 1st place
Grandioso D1 Ongen Shuppan Publising Co., Ltd.
Visual Grand Prix 2016 SUMMER
DAC/DDC category (over JPY1,000k) Gold Prize
Grandioso D1 Ongen Shuppan Publising Co., Ltd.
Visual Grand Prix 2016
DAC/DDC category (over JPY1,000k) Gold Prize
Grandioso D1 Ongen Shuppan Publising Co., Ltd.
Visual Grand Prix 2015 SUMMER
DAC/DDC category (over JPY2,000k) Gold Prize
Grandioso D1 Ongen Shuppan Publising Co., Ltd.
Visual Grand Prix 2015
DAC/DDC category (over JPY1,000k) Gold Prize
Grandioso D1 Ongen Shuppan Publising Co., Ltd.
Visual Grand Prix 2014 SUMMER
DAC/DDC category (over JPY1,000k) Gold Prize
Grandioso D1 Ongen Shuppan Publising Co., Ltd.
Audio Excellence 2014
Extra Prize
Grandioso D1 Ongen Shuppan Publising Co., Ltd.
Audio Excellence 2014
Digital Disc Player category
Grandioso D1 Stereo Sound Publishing Inc.
Grand Prix 2013
Golden Sound award
Grandioso D1 Stereo Sound Publishing Inc.
Best Buy Component 2014-2015
D/A Converter category (over JPY700k) 1st place
Grandioso D1 Stereo Sound Publishing Inc.
Best Buy Component 2013-2014
D/A Converter category (over JPY700k) 1st place
Grandioso D1 Stereo Sound Publishing Inc.
Best Buy Component 2013-2014
Digital Disc Player category (over JPY1,000k) 2nd place
Grandioso D1 Stereo Sound Publishing Inc.
Best Buy Component 2017-2018
Digital Disc Player category (over JPY1,000k)*
Grandioso D1 Stereo Sound Publishing Inc.
Best Buy Component 2017-2018
D/A Converter category (over JPY700k)
Grandioso D1 Stereo Sound Publishing Inc.
Best Buy Component 2016-2017
Digital Disc Player category (over JPY1,000k)*
Grandioso D1 Stereo Sound Publishing Inc.
Best Buy Component 2016-2017
D/A Converter category (over JPY700k)
Grandioso D1 Stereo Sound Publishing Inc.
Best Buy Component 2015-2016
Digital Disc Player category (over JPY1,000k)*
Grandioso D1 Stereo Sound Publishing Inc.
Best Buy Component 2015-2016
D/A Converter category (over JPY700k)
Grandioso D1 Stereo Sound Publishing Inc.
Best Buy Component 2014-2015
Digital Disc Player category (over JPY1,000k)
Grandioso D1 Ongaku no Tomo Sha Corporation
STEREO Best Buy Component 2016
DA Converter category 2nd place
Grandioso D1 Ongen Shuppan Publising Co., Ltd.
Visual Grand Prix 2017
CD/SACD Player category
(over JPY1,000k/Separate)*
Audio Art
Best Performance of the Year 2015

* Awarded as a combination of the Grandioso P1 and D1.