CY-5100dsd Ref Edition DAC

The Absolute Reference DAC, headphones amp

If only the very best will do!

The CY-5100dsd Reference Edition sets new standards for digital to analogue converters. Be stunned by the smooth, warm and natural sound stage. Totally redesigned from the ground up, this is the best DAC available, even for twice the budget.

The CY-5100dsd is also a digital pre-amp with advanced digital or optional analogue volume control. When desired, the CY-5100dsd can directly feed an end-amplifier.

With the newly designed, high precision headphone amplifier with independent volume control, the CY-5100dsd Reference Edition is the perfect combination for demanding headphones.

Unique is the extra headroom to avoid inter-sample clipping distortion, even with overly loud recordings.

Shipping now. Recommended Retail price: 1699 USD (ES-9028Pro) or 1899 USD (ES-9038Pro)


  • Supports up to 384kHz / 24bit digital audio over USB
  • Support for the ultra-resolution DXD format
  • Selectable digital filters
  • Automatic memory for all settings per sample rate and per input
  • Clear status display
  • IR Remote control
  • Outputs for amplifier and headphone
  • 48 bit calculated in-DAC volume control, retains the finest details
  • Compact design
  • 5 selectable digital inputs: Dual SPDIF, Dual Optical, USB
  • Precision machined sturdy metal case, no vibrations

Applications & Specifications

Detailed technical specification:

Core DAC specs

  • Supports up to DSD128 (DoP) and PCM 384 kHz
  • Dynamic range: better than 130 dB, non-weighted (24 bit, 1kHz, -60 dB)
  • Frequency range: DC to 75 kHz (-3 dB point, @ 192kHz sample rate), 20 Hz to 20 kHz within 0.09dB
  • Total harmonic distortion better than -115dB (1kHz, non-weighted, 0dB-2V RMS, 32 bit)
  • Jitter: jitter from source is eliminated by advanced ASRC DSP
  • Component technology: ESS 9028Pro DAC chip (9038Pro optional), Toroid transformer, 4 layer PCB board, PP capacitors, thin film precision resistors, Studio quality, high current audio op-amps, 9 power sources for analogue, CPU and digital parts
  • Headphone output: max 4V RMS, impedance 16 Ohm or higher
  • Digital filter selection:
    • Choice of seven (7) filter curves
    • Curves available with smooth or steep slope
    • Minimum Phase (no pre-ringing) or Linear Phase

SPDIF input

  • 2 inputs, RCA inch, gold plated, 75 Ohm impedance
  • Supports 44.1, 48, 88.2, 96, 176.4, 192 kHz sample rate in 16 and 24 bits and DSD64
  • Input 2 with galvanic isolation to support long cables, avoiding ground loops
  • Dedicated DSP for SPDIF processing, jitter eliminated


  • 2 Optical inputs for use with optical (TOSLINK) cable
  • Supports 44.1, 48, 88.2, 96 sample rate in 16 and 24 bit
  • Dedicated DSP for SPDIF processing, jitter eliminated

USB input

  • Supports  USB 2.0 and USB  3.0
  • PCM 44.1, 48, 88.2, 96, 176.4, 192, 352.8, 384 kHz sample rate in 16, 24 and 32 bit
  • Native DSD64 (2.8Mhz), DSD128 (5.4Mhz) support trough DoP (DSD256 option)
  • Audio class 2 async mode, compatible with Mac-OS, Linux, Windows driver automatically downloaded
  • Advanced DSP to process all digital signals to completely remove jitter from the source
  • Galvanic insulation from computer, no ground loop and leak current problems


  • IR remote control
  • Settings memory, memorizes volume, input and filter selection.
  • Cinch unbalanced and XLR balanced audio outputs
  • Separate (7) filter settings for PCM and (4) for DSD.
  • Control processor’s automatic sleep mode when playing music, combines the audio purity of manual designs with the comfort of processor control.
  • Environment: relative humidity 10 – 90% non-condensing, temperature limits:  10C– 40C operating, -20C to 80C storage.
  • Net weight: 3.2kg (DAC only), gross  weight: 4.0kg
  • Dimensions: 280 x 60 x 280 mm (excluding protrusions)
  • Power supply: maximum 20W, available in 115 VAC and 230 VAC models
  • Power cord, USB cable, user’s manual and remote control included
  • Designed in Europe


At reference quality level, the CY-5100dsd Reference Edition will take center stage.

Upgrade existing transport: connect using the SPDIF or TOSLINK input and instantly enjoy the obvious improved sound as jitter from the source is removed and the fully customized digital filter can set to match your personal music taste and existing equipment.

Replace old DAC:  especially when your old DAC is more than 3 years old, the difference in sound quality will be dramatic.

To ‘up-end’ your existing music server, player: if you own a media player (server) system, you can now enjoy improved quality sound. Simply connect your music system’s digital output to the DAC. Trough DoP, you can playback DSD files directly from most media players.

Works great with Raspberry PI based music players players: the CY-5100dsd works great with Raspberry PI based (MPD) music players such as MoOde Player in both PCM and DSD.

To use your computer as high quality music source:  the CY-5100dsd DAC’s supports up to 384kHz and DSD128 formats, so you have the option to do all digital filter processing inside the computer for superior sound or play the highest resolution files available today.

88.2 kHz, 176.4 kHz, 352.8 kHz (DXD) sample rates are also supported; use a player like the Foobar 2000 to play super resolution files in bit-perfect fidelity.

The CY-5100dsd Reference Edition supports DoP, so playing DSD music files in Apple MAC-OS is a breeze.