D2 Key Features

32-bit DAC

At the center of the Anedio D2 is the ES9018 Sabre Reference 32-bit DAC from ESS Technologies. Its oversampling modulator, optimized for accurate reproduction of music, excels at maintaining superb linearity at all levels, tracking fast transients. and resolving lowermost signals. You will be able to hear minute details, accurate rendition of instrumental timbres, and spatial cues from reverberations.

Multi-Stage Jitter Reduction

The D2 DAC incorporates multi-stage jitter reduction circuits to tame jitter as far as possible, well below the threshold of audibility. As the digital signal goes through each stage, the jitter level is progressively reduced until the critical final stage, which is driven by an ultra-low jitter oscillator with 0.5 ps rms jitter. Whether you listen to music through USB or SPDIF, the multi-stage jitter reduction is highly effective, delivering consistently natural, musical, and relaxed sound. Read "Multi-Stage Jitter Reduction"

Bit-Accurate Jitter Reduction

Conventional jitter reduction schemes modify every sample based on a constantly-changing estimate of the input sample rate, inevitably introducing audible artifacts. By contrast, the Anedio D2 preserves the original samples in their pristine condition through the jitter reduction stages. Only at the final stage of the ES9018 DAC, time-domain interpolation is performed at a much higher frequency, which suppresses interpolation errors to below -175 dB.

Built-in Volume Control

The built-in volume control allows power amplifiers to be connected directly to the D2 DAC, eliminating the preamp in the signal path when playing from a digital source. Bypassing the preamp is one of the most significant steps toward a higher level of transparency. To ensure highest signal-to-noise ratios at realistic listening levels, our design uses an optimal combination of 32-bit digital attenuators and thin-film resistor dividers.

High-Resolution 24-bit/192 KHz USB

From the Red Book CD to the 24-bit/192 KHz format, the USB interface of the D2 will transform the computer into a pristine, jitter-free source of music. The USB interface controls its own timing (the asynchronous mode) using low-jitter crystal oscillators, and the real-time XMOS processor ensures the fine control of timing required for asynchronous streaming.

Balanced and Unbalanced Outputs

The D2 DAC offers both balanced and unbalanced line outputs. The balanced output is as pristine as it can get, fully preserving the differential path from the DAC chip to the output with minimal circuitry. Both balanced and unbalanced outputs are carefully optimized to bring out the dynamic impact, immediacy, and natural timbre of music

High-Performance Headphone Amplifier

Equipped with a high-current buffer, the headphone amplifier can drive just about any headphones easily and accurately. Our ultra-linear design achieves lower than 0.0004% THD+N and 0.0002% IMD2 (19K+20KHz) driving 30 ohm loads. Its low-impedance output guarantees that the distortion will be kept absolutely minimal regardless of the nonlinearity of the headphone impedance.

IR Remote Control

The D2 DAC comes with a Sony universal IR remote control for setting the volume level and channel. With extra large buttons and comfortable ergonomic design, the IR remote is simple and easy to use. As with most people, we do not like to pile up remote controls in our living rooms. In case you want to use another universal remote to control the Anedio D2 DAC, we've made it easy to do so by using a common IR protocol that is readily recognized by most universal remote controls.

Galvanic Isolation

The four digital inputs (USB, SPDIF 75-ohm BNC, RCA, and optical) are completely isolated from the DAC ground to ensure that the noise from other digital sources does not propagate into the DAC ground. Ultra-high-frequency digital transformers used in the D2 DAC excel at isolating the ground while passing on the digital signal with high fidelity.

Read more . . .

Channel Separation

Through extensive optimization of the PCB layout and judicious use of separate voltage regulators, the D2 DAC achieves near perfect channel separation, -140dB at 1KHz and -135dB at 20KHz. With good recordings, the sense of space can really blossom, and the music becomes more alive with the clarity of focus, the stability of imaging, and the depth and width of soundstage.

Premium-Quality Components

Every part of the D2 DAC is touched by our joy of building a quality product. You will find premium-quality components used abundantly throughout the D2 DAC -- 4-layer PCBs, ultra-high-frequency digital transformers, gold-plated connectors, toroidal power transformers with magnetic shields, low-noise voltage regulators, fast-settling op amps, 0.5% precision film resistors, SiC Schottky diodes, and high-reliability supply capacitors.

Solid Non-Ferromagnetic Chassis

All of this is packaged in a non-ferromagnetic enclosure for enhanced immunity to electromagnetic interference and high-frequency noise, which contributes to an extremely low noise floor. The faceplate is machined from a 0.32 inch thick aluminum block, which forms a mechanically rigid structure with the rest of the enclosure and makes the DAC impervious to acoustically-induced vibrations.

What's New in the D2 DAC

New Features

  • 24-bit/192KHz USB interface
  • Balanced outputs

Other Changes

  • Enclosure redesigned
  • Lower sampling jitter
  • Channel separation increased from 130 to 140 dB
  • Toroidal transformers with higher VA
  • SiC Schottky diodes in bridge rectifiers
  • Supply capacitors with lower ESR
  • Headphone amp output impedance decreased from 0.25 to 0.03 ohms
  • Headphone amp gain adjustable through internal jumpers (2 settings)
  • Power supply for the headphone amp improved
  • Power supplies for the DAC IC improved
  • Power supplies for the I/V stage and line output improved
  • Turn on/off transients reduced
  • SPDIF inputs with better impedance matching