GRANDIOSO D1X Monoblock D/A Converter

    The Overview

    The Master Sound Discrete DAC features
    a totally original design that represents the
    culmination of Esoteric’s quest for an original
    master sound. Its high 64-bit resolution
    provides vast improvements over our earlier
    DAC’s 36-bit resolution, and enables support
    for the latest technologies such as playback of
    22.5MHz DSD and 768kHz PCM audio. All
    processing is handled by Esoteric’s own FPGA
    algorithm, and a discrete circuit design forgoes
    the use of generic DAC ICs in order to actualize
    Esoteric’s vision down to the finest detail.

The Features

High 64-Bit Resolution

 How close can digital come to analog? With Esoteric's Master Sound Discrete DAC, this question becomes a thing of the past. The Master Sound Discrete DAC's 64-bit resolution is the highest in Esoteric history, reducing digital rounding error to an absolute minimum in order to enable the faithful reproduction of the subtlest of textures.

Support for DSD 22.5 MHz DSD and 768 kHz PCM

 The Master Sound Discrete DAC easily supports a broad range of formats, and can provide native playback of the highest resolution DSD master files. This impressive performance is merely one of its superlative attractions.

Our Aim Was to Faithfully Reproduce All the Vibrancy and Energy of Music.

 64-bit resolution and overwhelming performance. However, the true essence of This DAC cannot be discussed merely in terms of its specifications. The fundamental goal in the development of the Master Sound Discrete DAC was to achieve an accurate, full-bodied reproduction of all the vibrancy and energy of music. Music is infused with all the passion that a performer brings to a passage, with instantaneous and explosive energy. We wondered if it was possible to use higher-grade parts than integrated chips, as well as more luxurious materials, to create a more powerful DAC that could deliver a superlative analog signal. This idea led us to the discrete DAC. Esoteric's top engineering team painstakingly invested their very pride into realizing this complete, full-bodied sound.

Equipped with ES-LINK Analog for Current Transmission of the Highest Audio Quality

 In addition to its XLR and RCA line connections to the amplifier, the D1X has also been newly equipped with Esoteric's own ES-LINK Analog transmission system. Current-mode signal transmission is less susceptible to the effects of signal route impedance, thus enabling more powerful signal transmission. When connected to supported devices, ES-LINK Analog offers an ideal transmission system for maximizing system potential.

Luxurious Materials and Powerful Electrical Current Output

 Featuring four DAC circuits per channel, their eight circuit elements are arranged in a semi-circle for equidistant signal transmission within each DAC. This total of 32 circuit elements are arranged in two circles that present a luxurious structure with all constituent components, including resistors, logic ICs, and power supplies, separated for all 32 of the circuits. Since each of these 32 circuits utilizes an independent power supply circuit, the music's full burst of energy can be output in its purest form. Furthermore, by selecting the same sort of ultra-high precision resistors used in measuring instruments, the DAC can perform high-speed digital arithmetic processing with greater accuracy.

Advanced Quality Control

 With a discrete DAC, where component tolerances are directly linked to arithmetic precision, highly advanced quality control is also required for the manufacture of electronic circuit boards. Esoteric's own in-house factory boasts some of the world's leading board mounting technologies, such as soldering performed in an oxygen-free furnace, which is located in a clean room featuring the same level of cleanliness found in a hospital operating room. Technologies cultivated in the production of electronic circuit boards for audio, medical, aerospace, and defense industries support the high production quality of the Master Sound Discrete DAC.

Monoblock DAC

 Setting its sights on achieving the highest levels of D/A conversion capability, Esoteric created the world's first monoblock D/A converter in 2004 with the D-01. The latest in this lineage of flagship D/A converters is the Grandioso D1X. Brushed up and liberally infused with new technologies, the D1X lets you fully enjoy the excellent channel separation of a dual monaural configuration coupled with truly stereophonic sound.

Esoteric-HCLD Output Buffer*

 A fundamental element of audio quality, the Esoteric-HCLD output buffer amp is mounted on a separate board from the D/A converter, and its circuits have been upgraded to double the scale of the previous model. As an indicator of its response speed, the buffer amp's main components boast an astoundingly high slew rate of 2,000V/μs. This buffer amp also features a four circuit parallel configuration for RCA output, and an extravagant configuration of two hot and cold circuits each for balanced XLR output. This enables the D1X to approach the very limits of powerful current-mode transmission and speed, which are the most important elements of an analog output circuit, and help reproduce the full reality of music with breathtaking dynamic range and clarity.

The Specs

Analog Audio Outputs
XLR/ESL-A x 1 (mono) each for left and right channels
RCA x 1 (mono) each for left and right channels
Output impedance XLR 100Ω
Maximum output level
(1 kHz, full scale PCM signal input, 10kΩ load)
XLR 5.0Vrms
RCA 2.5Vrms
Frequency response (192kHz PCM signal input) 5Hz – 75kHz (-30dB)
S/N ratio 113dB
Distortion 0.0007% (when 1kHz, D/A converter operation mode set to M3)
Digital Audio Inputs
Input signal formats 44.1 – 768kHz, 48-bit linear PCM (ES-LINK5)
2.8/5.6/11.2/22.5MHz DSD (ES-LINK5)
XLR x 1
Input level 5.0Vp-p
Input impedance 110Ω
Input signal formats
(Dual connection)
88.2 – 384kHz, 16/24-bit linear PCM (Dual AES)
88.2 – 192 kHz, 48-bit linear PCM (ES-LINK3)
Input signal formats (Single connection) 32 – 192kHz, 16/24-bit linear PCM (AES/EBU)
RCA x 2
Input level 0.5Vp-p
Input impedance 75Ω
Input signal formats 32 – 192kHz, 16/24-bit linear PCM (IEC 60958)
2.8MHz DSD (DoP)
Digital optical x 1
Input level -24.0 – -14.5 dBm peak
Input signal formats 32 – 192kHz, 16/24 -bit linear PCM (IEC 60958)
2.8MHz DSD (DoP)
(USB 2.0 supported)
x 1 (Type B)
Input signal formats 44.1 – 768kHz, 16/24/32-bit linear PCM
2.8MHz, 5.6MHz, DSD
Clock input
BNC x 1 each for left and right channels
Input impedance 50Ω
Frequency that can be input 10MHz (±10ppm)
Input level Sine wave, 0.5 – 1.0Vrms
Power supply AC 220-240V, 50/60Hz
AC 120V, 60Hz
AC 220V, 60Hz
AC 230V, 50Hz
Power consumption 20W
External dimensions (W x H x D, Including protrusions) 445 x 132 x 448 mm
(17 5/8 x 5 1/4 x 17 3/4″)
Weight Left channel 23.1 kg (51 lb)
Right channel 23.0 kg (50 3/4 lb)
Included Accessories Power cords x 2, HDMI cables x 2, Felt pads x 8, Owner's manual x 1, Warranty card x 1
- This product is available in three different power supply variations shown in the specification section above. Make sure that the voltage shown on the rear panel matches the AC line voltage in your area.
- The shape of the AC inlet and plug of the supplied power cord depends on the voltage rating and destination country.