Monday, October 18, 2021
NEW! s88 Streaming DAC
exaSound Presents the s88 8-Channel Streaming DAC

Featuring a reference-grade 32-bit digital-to-analog converter and Roon-Ready streamer in stylish full-size mono-block enclosure, the s88 delights with its ergonomic simplicity and sonic perfection.

With refinements like autonomous balanced and unbalanced I/V stages and exaSound’s unique three-way galvanic isolation, ultimate resolution volume control and high-performance headphone amplifier, the s88 Eight-Channel Streaming DAC will uncover every detail in your high-resolution files, allowing you to hear the music just as it was recorded.

s88 features proprietary asynchronous USB streaming, ASIO and Core Audio drivers and FPGA core to achieve 32bit, low-jitter, bit-perfect signal path.

s88 will play natively DSD encoded files up to 8-channels DSD256, DXD 352.8 kHz and PCM up to 384 kHz.

In stereo mode s88 supports DSD playback of DSD512 files and streams.

With state-of-the-art performance, easy operation, remote diagnostics, online updates, upgradable output stages and exaSound’s acclaimed customer support, the s88 Streaming DAC will be the cornerstone of your music system for years to come.

Designed and hand-made entirely in Canada


30-Day Risk-Free Trial
We invite you to experience our products for 30 days in your own listening environment. We believe that you will be pleasantly surprised by the discovery of a new level of sonic realism, dynamics and detail.

If for any reason you are not fully satisfied, you can return the products within 30 days.

Order now.

exaSound’s in–house design delivers world recognized, award winning sonic purity 

  • World's highest performance Sabre ES9038PRO DAC chip increases 4 times the internal paralleled DAC channels to bring more presence in the mid-range
  • Sophisticated reference voltage sources and master clock power circuits deliver more precise 3D imaging and more natural portrayal of transients
  • Each channel has autonomous balanced and unbalanced analogue output stages that can be used simultaneously. Components with superb linearity and enhanced power lines offer lower noise and distortion levels, fine micro dynamics and natural base reproduction.
  • Octo-mono output stage topology offers reduced EM interference and reduced channel crosstalk resulting in better detail and resolution.
  • Future-proof design allows for upgrades of the output stages, the streamer module CPU, RAM and SSD storage.
  • ZeroJitter™ — a unique true asynchronous USB interface with error correction assures accurate data reception
  • ZeroResolutionLoss™ — an exclusive volume control with four–way volume synchronization brings convenience and dynamic range comparable to the best analogue volume controls
  • GalvanicInfinity™ — affords complete galvanic isolation for ultimate external noise reduction
  • FemtoMaster™ — our quad-clock architecture, with 82 femtosecond master clock and 3 auxiliary stream-control clocks, minimizes jitter for maximum timing accuracy, image development and bass extension
  • Balanced internal design - yields the lowest analog noise and lowest distortion


Roon offers engaging, enjoyable way to browse your music. Via intelligent automatic cloud service library management, Roon delivers metadata for the user’s library and frees the user from the complexities of music library management.

s88 is a Roon Ready streamer and Roon Tested DAC. It has been profiled and tested by both Roon Labs and exaSound for maximum compatibility with Roon. Roon identifies exaSound devices and sends them audio optimized for their capabilities. Together, Roon and exaSound deliver the power, flexibility, and performance benefits of digital audio, with the easiest setup and highest reliability available.

Streaming Options


The s88 Streaming DAC offers master-quality Tidal and Qobuz streaming with Roon and Airplay. It delivers seamless, top-quality sound over wired or wireless connections, accessing high-resolution streaming services and local files. s88 can be used with the Roon Nucleus and with PC and Mac-based audio servers.
exaSound-made Gamma and Delta servers offer tight integration and improved ergonomics when used with the s88 Streaming DAC. The exaSound Delta server offers the highest CPU performance available on the market for multichannel DSP processing with Roon.

    • Uncompromised fidelity — ENclusiv™ zero-configuration comprehensive sampling rate support, all the way up to native DSD512 and 32 bit PCM at 384 kHz/DXD
    • Simplicity — Play multichannel or stereo in one playlist without changing settings  
    • Forget guesswork — Zero-configuration automatic filter selection for every format and sampling rate
    • Love the convenience — Synchronized simultaneous operation from IR Remote, device controls and software dashboard
    • Unique ergonomics - acceleration-sensing volume knob delivers precise 0.5 dB volume changes when turned slowly and large volume correction when turned
    • Blackest blacks — Ultimate clean power, with 15 linear power conditioning stages, and an upgradable external power supply
    • Get lost in your music — Roon: the most engaging, enjoyable way to browse your music. RoonReady enables fast and highly reliable auto–discovery for instant setup


  • Sample Rates: ENclusiv™ comprehensive sample rate support
    • DSD64: 2.8224 and 3.072 MHz
    • DSD128: 5.6448 and 6.144 MHz
    • DSD256: 11.2896 and12.288 MHz
    • DSD512: 22.5792 and 24.576 MHz (Stereo Only)
    • PCM/DXD: 44.1kHz to 384kHz at 32 bits
  • Converter Core: ESS Technologies 9038Pro reference monolythic 8 channel DAC
  • USB Input: Proprietary ZeroJitter™ asynchronous USB interface with error correction on classic B–Type connector, USB cable included
  • USB Host Support: Custom, high performance Mac OS & Windows ASIO drivers; MAC Core Audio drivers with DoP256 support
  • LAN Input: Wired Gigabit Ethernet and wireless WiFi 802.11ac supporting Ronn Raat, Signalyst NAA, UPnP and Airplay audio streaming.
  • Server Support: Roon, HQPlayer, UPnP and Airplay. Built-in multichannel UPnP server with DSD512 support.
  • Clock: FemtoMaster™ super–low jitter quad-clock architecture, with 82 femtosecond master clock and 3 auxiliary stream-control clocks
  • Power Conditioning: 15 linear power filtering stages, optional dedicated linear power supply for the DAC sunsystem
  • Host Noise Rejection: GalvanicInfinity™ - Galvanic isolation between the USB subsystem, streamer module and the DAC circuitry eliminates ground loop noise and blocks computer–generated interference
  • Headphone Output: Third generation headphone amplifier, capable of driving low impedance and low sensitivity headphones
  • Additional Stereo Digital Inputs: Two SPDIF inputs provide jitter reduction and superb D/A conversion when used with CD transports
  • Analog Outputs: Simultaneously driven autonomous balanced and unbalanced output stages. Gold–plated balanced XLR and unbalanced RCA line outputs.
  • Power Management: 12V Trigger output
  • Remote Control: Included 7 button remote, s88 can be configured to work with most IR remotes
  • Remote Support, Remote Diagnostics, Remote Updates

Power Supply Options

The s88 Streaming DAC supports two power supply configurations.

Single Power Supply Configuration
the exaSound s88 Streaming DACs is offered with a desktop style 12V switching power supply. The s88 uses 15 internal linear power conditioning stages in cascaded configuration. Every subsystem is powered by dedicated power source. This sophisticated power conditioning makes the s88 very insensitive to the quality of the external power supply.

Using Additional Linear Power Supply for the DAC Analogue Stages
To achieve the lowest possible noise level, a third-party 12V linear power supply can be used for the DAC analogue circuits and IV stages. Customers interested in using additional premium-quality linear power source have the option to order the s88 DAC bundled with a Teddy Pardo power supply.

Teddy12/2 - 12V 2A Power Supply
The Teddy 12/2 power supply is based on a superior regulator called SuperTeddyReg.
Click here to read more about Teddy Prado’s power supply technology.

  • Power output: 12V, up to 2A
  • Mains Supply: 110-120V or 220-240V
  • Dimensions: 24x16x6 cm

exaSound s88 8-channel Streaming DAC Owner's Manual
exaSound s88 8-Channel Streaming DAC Owner’s Manual.pdf
Last updated on November 24, 2020


D/A Converter IC
 ESS Technology ES9038PRO 32-bit, 8-channel
PRO series
PCM Sampling Rates - USB, Network Streaming
44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz, 352.8kHz, 384kHz

DSD Sampling Rates:
• USB - Windows ASIO
• USB - Mac ASIO
• USB - Mac Core Audio
• LAN - Network streaming

• ASIO Compatible player like Roon,JRiver and HQplayer is requited on Windows.
• ASIO on Mac OS is supported only by Roon and HQPlayer 3  

DSD64:  2.8224MHz; 3.072MHz
DSD128: 5.6448MHz; 6.144MHz
DSD256: 11.2896MHz; 12.288MHz

DSD512 - Stereo Mode:
• USB - Windows ASIO
• USB - Mac ASIO
• LAN - Network Streaming

• DSD512 is not supported on USB - Mac Core Audio

DSD512: 22.5792MHz; 24.576MHz
PCM Sampling Rates-SPDIF Coaxial IN 1, Stereo
44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz  
PCM Sampling Rates-Optical (TOSLINK) IN 2, Stereo
44.1kHz, 48kHz, 88.2kHz, 96kHz 
Total Harmonic Distortion + Noise
0.00021% @ 1kHz, 0dBFS
Total Harmonic Distortion
0.00014% @ 1kHz, 0dBFS
Intermodulation Distortion
-128db 0.00004% @ 19kHz + 20kHz 0 dBFS
2nd order IMD
Signal-to-Noise Ratio
Balanced: 123.8 dB, A-weighted, 4.6 Vrms
Unbalanced: 123.5 dB, A-weighted, 2.0 Vrms
DAC Master Clock Jitter
0.082ps (82fsec) rms
Frequency Response
0Hz - 20kHz (-0.15dB) @ 44.1kHz / 48kHz sampling rates;
0Hz - 30kHz (-0.15dB) @ sampling rates  88.2kHz and higher
Channel Separation, typical
133dB @ 1kHz
Digital Inputs
LAN, USB, SPDIF Coaxial, SPDIF TOSLINK (optical), USB storage
 Line Outputs
 Balanced (XLR), Unbalanced (RCA), gold-plated contacts
Line Output Level
Balanced: 4.6 Vrms
Unbalanced: 2 Vrms
Line Output Impedance 
Balanced: 400 ohms
Unbalanced: 200 ohms
Line Output Offset
< 5mV 
 Headphone Amp Current Output  250mA peak
 Headphone Amp Output Impedance 1 Ohm, 20Hz-20kHz  
 Headphone Amp Output Voltage  0-6Vrms
 Headphone Amp THD+N, typical  0.0012% , 1Vrms into 60ohms
 Headphone Amp Intermodulation Distortion
1Vrms into 60ohms
19kHz + 20kHz 2nd order IMD, typical
 -120dB  0.0001%
 Headphone Jack 1/4" TRS, SE
 Volume Control Four-way volume synchronization,
Volume bypass
Channel trimming
ZeroResolutionLoss™ volume control provides all-time 0dB Full-Scale streaming
Acceleration-sensing volume knob
 Volume Control Step 0.5 dB 
 Volume Matching Between Channels Better than 0.1 dB 
Operating System Requirements: Windows 
Windows 10 x64, Windows 8 x86, Windows 8 x64, Windows 7, Windows XP
ASIO compatible player required for all Windows platforms 
 Operating System Requirements: Mac Mac OS Mavericks, Yosemite, El Captain, Sierra High Sierra, Mojave
USB Ports    Type A: 2x USB 3.0, 2xUSB 2.0
Type B: USB 2.0
Ethernet Interface
Gigabit Ethernet
Wi-Fi Interface
Intel® Dual Band Wireless-AC 7260
802.11 ac/n
2.4 GHz, 5 GHz
IP Setup
 IP4, DHCP, manual configuration
Wireless Security Mode
 External Main Power Supply Input: 10-240V AC, 1.4A, 50-60Hz
Output: 12V DC, 5.4A
 Optional Linear Power Supply for DAC Analogue Stages Teddy Pardo 12/2 Linear Power Supply
Input: 110V or 240V, factory selected
Output: 12V DC, 2A
Compliance CE, FCC
Over Current Protection
 Power Consumption   < 64W
Power Jack Diameter Internal: 2.5mm External : 5.5mm 
 Enclosure Premium machined and anodized aluminium mono-block
Finish: Silver, Black
(W x H x D)
17.5 x 2.625 x 9.64 inches (445 x 70 x 245 mm)  
Weight 13.66 lbs (6.2Kg)
Package dimensions (W x H x D) 20.75 x 8.25 x 16.5 inches (525 x 209 x 423 mm)
Package Weight
15.2 lbs (6.9Kg) 
 Teddy Pardo power supply dimensions (W x H x D) 6.5 x 2.2 x 9.25 inches (165 x 55 x 235 mm)  
Teddy Pardo power supply weight
5.5 lbs (2.5Kg)  
 Teddy Pardo power supply package dimensions (W x H x D) 12.75 x 8.25 x 4.25 inches (320 x 107 x 235 mm) 
 Teddy Pardo PS package weight  5.5 lbs (2.5Kg)

Firmware Updates
To check for updates go to http://s88.local, open Settings page and tap or click the "Check Updates" button.

Version 42 (2021-05-20)
  • Linux kernel update.
  • Performance and stability improvements.
Version 41 (2021-04-09)
  • Major update of the exaOS operating system.
  • Added Advanced Setting menu.
  • Added settings for DPLL control for SPDIF and Toslink inputs.
  • Updated Signalyst Network Audio Adapter.
  • Updated Roon RAAT.
  • Updated UPnP / Open Home Server.
  • Upgraded Samba sharing for better discovery with Windows 10.
  • Performance and stability improvements.
Version 31 (2020-09-03)
  • Support for e62, e68, e48 DACs.
  • Updated Signalyst Network Audio Adapter.
  • Updated Roon RAAT.
  • Updated CD ripping module.
  • Performance and stability improvements.

 ASIO is a registered trademark of Steinberg Media Technologies GmbH