Feel The Sound by

Portable Mastering Quality Sound (MQS) Audio Player

High Definition & High-Resolution Audio Player

Feel the most Powerful and Dynamic sound

  • 24bit / 192kHz High Resolution Sound

  • Cirrus Logic CS43198 x 2EA Dual DAC

  • ARM Cortex-A9 1.4GHz, Quad-Core CPU DDR3 1GB

  • SNR 123dB, THD+N 0.0007%, Crosstalk – 140dB, Output 3.1Vmrs ( Unbalanced )

  • SNR 125dB, THD+N 0.0005%, Crosstalk – 142dB, Output 3.4Vmrs ( Balanced )

  • Low-clock-jitter sensitivity: 50ps(Typ)

  • 4inch TFT Wide Touch Display (480 x 800), IPS Panel

  • WAV, FLAC, ALAC, AIFF, DSD, WMA,

  • MP3, OGG, APE(Normal, High, Fast)

  • Internal Memory 32GB

  • External Micro SD Card Memory 256GB x 2EA

  • Enhanced ABS Solid Body and Tempered Glass

  • Ultra Power Saving Mode

thebit Opus#1

thebit Opus#1

한글소개 보기

New Cirrus Logic CS43198 X 2
Pure Dual DAC

Opus#1S has two CS43198 DACs released by Cirrus Logic in 2017. Each DAC manages the left and right channels separately to produce the best sound with the higher resolution and wider spacious feel.

Optimized sound through sophisticated tuning by audio expert

Opus#1s is based on Android operation systems compatible with the ARM Cortex-A9, up to 1.4GHz with the Quad-Core CPU DDR3 1GB to express the best possible sound, providing bit to bit decoding and supporting wide variety of audio formats.

Opus#1s maximizes the advantages of the CS43198 DAC performance while retaining the sound of the audio-opus series praised by users, enhancing ultra low range and high range sound compared to the existing Opus#1 .

You can enjoy more dynamic sound.

Powerful output of 3.4Vrms

The powerful output of 3.4Vrms, which is not comparable to other DAPs of the same grade, enables you to enjoy powerful sound anytime and anywhere. Unbalance output also has enough 3.1Vrms to enjoy perfect sound with any earphone / headphone.

Comparison of audio spec with Opus#1

Audio Specifications

Model Opus#1S Opus#1
DAC Cirrus Logic CS43198 x 2 Cirrus Logic CS4398 x 2
Output Bal. 3.4Vrms
Unbal. 3.1Vrms
Bal. 2.3Vrms
Unbal. 2.1Vrms
SNR Bal.  125dB @1KHz
Unbal. 123dB @1KHz 
Bal. 115dB @1kHz
Unbal. 114dB @1kHz
Crosstalk Bal. 142dB @1KHz
Unbal. 140dB @1KHz
Bal. 135dB @1kHz
Unbal. 130dB @1kHz
THD+N Bal. 0.0005%@1KHz
Unbal . 0.0007% @1KHz
Bal. 0.0007% @ 1kHz
Unbal. 0.0007% @ 1kHz

Ultra Power Saving Mode

Opus#1s has a saving power cunsumption function.
Display off: it will take 50~53 seconds + Suspend mode: it will take another 1 minutes.

※ Opus#1s supports ‘Ultra Power Saving Mode’ in suspend mode.
It means that opus#1s last almost 4weeks in Ultra Saving Mode, if it is fully charged.

Powerful and Refined Sound Building Algorithm with
Cirrus Logic CS43198 x 2EA 24 bit Pure Real Dual DAC


TAPI channel mixing
Selectable fast and slow roll off digital interpolation filters

Advanced multibit Delta-Sigma modulator & architectur
Mismatch shaping technology that eliminates distortion
Low-clock-jitter sensitivity: 50ps(Typ)
Differential analog outputs


Huge Memory Expandability to ensure the best Sound Quality

High-Res Audio Player requires a huge storage space in order to store and play not compressed studio files. Opus#1 equipped with a 32GB internal memory which can be additionally extended up to 544GB by adding two 256GB microSD cards to its slots.

Support Internal Memory 32GB +  External Micro SD Card Memory

256GB x 2EA

Up to Max. 544GB

Enhanced ABS Solid Body and Tempered Glass
Available in 2 colors Lapis Blue and Palatinate Purple

Compact Opus#1s is ideally designed to fit in your pocket, allowing you to enjoy the clearest sound on your way. Logical, simple and user friendly interface guarantees fast and intuitive control of device. You also can rip the best benefits within this compact body by navigating through Previous-Play/pause-Next and Volume +/- buttons, ideally located to get a full control in your hand.

Intuitive, Easy, User Friendly UI

Customized for portable audio devices based on Android 5, the Opus#1S’ UI is fast and responsive, and is optimized for easy understanding and use by anyone with experience using smart phones.

Support USB Audio out

Opus#1S supports USB Audio out function, so you can connect various external USB audio devices(USB DAC). Enjoy your own sound by connecting with various audio devices that support USB input.

Co-working with the Best Sound Designers
and Engineers from Korea

-Laying out audio layers and sound optimization
-Analyzing analog frequency response and tuning the sound
-Blind Testing & Comparing sound layers with competitors’ products
-Finalizing audio layers and Verification approaches for Tune A Sound System
-Testing and Verification approaches for Tune A Sound of Future Lineup.

Cham-Ggot(Azalea) Studio, Seoul, South Korea
Sonic Korea Mastering Studio, Seoul, South Korea

Audio Specification

  • DAC    : CS43198 x 2EA
  • SNR(Balanced) : 125dB @ 1KHz
  • SNR(Unbalanced) :  123dB @ 1KHz
  • Crosstalk(Balanced)  : 142dB @ 1KHz
  • Crosstalk(Unblanced)  : 140dB @ 1KHz
  • THD+N(Balanced)  : 0.0005% @ 1KHz
  • THD+N(Unbalanced)  : 0.0007% @ 1KHz
  • Output Level : 3.4 Vrms(Balanced, Condition no Load)
  • Output Level : 3.1 Vrms(Unbalanced, Condition no Load)

General Specifications

Model Opus#1s
Display 4″ TFT Touch Display(480*800), IPS Pannel
CPU & Memory ARM Cortex-A9 1.4GHz, Quad-Core Memory(RAM) : DDR3 1GB
Button Power, Play/Pause, FF, REW Vol+ / Vol-
Supported Audio Formats WAV, FLAC, ALAC, AIFF, WMA, DSD, MP3, OGG, APE(Normal, High, Fast)
EQ & Effect 10Band , NORMAL/USER1/2/3/4/5
Charge & Data Transfer USB Micro-B input (for charging & data transfer (PC & MAC))
Connection Mode : MTP (Media Device)
Outputs Phone (3.5mm) / Optical Out (3.5mm)
Balanced Out(2.5mm, 4-pole support)
Battery 4,000mAh/3.7V Li-Polymer
Battery Life(Play) Time & Charge Time Play: Approximately 11 hours(44.1KHz 16bit, Vol.70, 32ohm, LCD off),
Charge: 4 hours
Memory Built-in 32GB
External microSD(Max 256GB) x2 Supports SDXC exFAT, NTFS
Clock source/ Jitter 50ps(Typ)
OS Android
Supported OS Windows 7,8,10(32/64bit), MAC OS x 10.9 or higher
Dimensions 72mm(W) * 112mm(H) * 18mm(D)
Weight 190g

+ OVERVIEW

New Cirrus Logic CS43198 X 2
Pure Dual DAC

Opus#1S has two CS43198 DACs released by Cirrus Logic in 2017. Each DAC manages the left and right channels separately to produce the best sound with the higher resolution and wider spacious feel.

Optimized sound through sophisticated tuning by audio expert

Opus#1s is based on Android operation systems compatible with the ARM Cortex-A9, up to 1.4GHz with the Quad-Core CPU DDR3 1GB to express the best possible sound, providing bit to bit decoding and supporting wide variety of audio formats.

Opus#1s maximizes the advantages of the CS43198 DAC performance while retaining the sound of the audio-opus series praised by users, enhancing ultra low range and high range sound compared to the existing Opus#1 .

You can enjoy more dynamic sound.

Powerful output of 3.4Vrms

The powerful output of 3.4Vrms, which is not comparable to other DAPs of the same grade, enables you to enjoy powerful sound anytime and anywhere. Unbalance output also has enough 3.1Vrms to enjoy perfect sound with any earphone / headphone.

Comparison of audio spec with Opus#1

Audio Specifications

Model Opus#1S Opus#1
DAC Cirrus Logic CS43198 x 2 Cirrus Logic CS4398 x 2
Output Bal. 3.4Vrms
Unbal. 3.1Vrms
Bal. 2.3Vrms
Unbal. 2.1Vrms
SNR Bal.  125dB @1KHz
Unbal. 123dB @1KHz 
Bal. 115dB @1kHz
Unbal. 114dB @1kHz
Crosstalk Bal. 142dB @1KHz
Unbal. 140dB @1KHz
Bal. 135dB @1kHz
Unbal. 130dB @1kHz
THD+N Bal. 0.0005%@1KHz
Unbal . 0.0007% @1KHz
Bal. 0.0007% @ 1kHz
Unbal. 0.0007% @ 1kHz

Ultra Power Saving Mode

Opus#1s has a saving power cunsumption function.
Display off: it will take 50~53 seconds + Suspend mode: it will take another 1 minutes.

※ Opus#1s supports ‘Ultra Power Saving Mode’ in suspend mode.
It means that opus#1s last almost 4weeks in Ultra Saving Mode, if it is fully charged.

+ Logic & Algorithm

Powerful and Refined Sound Building Algorithm with
Cirrus Logic CS43198 x 2EA 24 bit Pure Real Dual DAC


TAPI channel mixing
Selectable fast and slow roll off digital interpolation filters

Advanced multibit Delta-Sigma modulator & architectur
Mismatch shaping technology that eliminates distortion
Low-clock-jitter sensitivity: 50ps(Typ)
Differential analog outputs


Huge Memory Expandability to ensure the best Sound Quality

High-Res Audio Player requires a huge storage space in order to store and play not compressed studio files. Opus#1 equipped with a 32GB internal memory which can be additionally extended up to 544GB by adding two 256GB microSD cards to its slots.

Support Internal Memory 32GB +  External Micro SD Card Memory

256GB x 2EA

Up to Max. 544GB

+ DESIGN

Enhanced ABS Solid Body and Tempered Glass
Available in 2 colors Lapis Blue and Palatinate Purple

Compact Opus#1s is ideally designed to fit in your pocket, allowing you to enjoy the clearest sound on your way. Logical, simple and user friendly interface guarantees fast and intuitive control of device. You also can rip the best benefits within this compact body by navigating through Previous-Play/pause-Next and Volume +/- buttons, ideally located to get a full control in your hand.

+ TECHNOLOGY

Intuitive, Easy, User Friendly UI

Customized for portable audio devices based on Android 5, the Opus#1S’ UI is fast and responsive, and is optimized for easy understanding and use by anyone with experience using smart phones.

Support USB Audio out

Opus#1S supports USB Audio out function, so you can connect various external USB audio devices(USB DAC). Enjoy your own sound by connecting with various audio devices that support USB input.

Co-working with the Best Sound Designers
and Engineers from Korea

-Laying out audio layers and sound optimization
-Analyzing analog frequency response and tuning the sound
-Blind Testing & Comparing sound layers with competitors’ products
-Finalizing audio layers and Verification approaches for Tune A Sound System
-Testing and Verification approaches for Tune A Sound of Future Lineup.

Cham-Ggot(Azalea) Studio, Seoul, South Korea
Sonic Korea Mastering Studio, Seoul, South Korea

+ SPECIFICATION

Audio Specification

  • DAC    : CS43198 x 2EA
  • SNR(Balanced) : 125dB @ 1KHz
  • SNR(Unbalanced) :  123dB @ 1KHz
  • Crosstalk(Balanced)  : 142dB @ 1KHz
  • Crosstalk(Unblanced)  : 140dB @ 1KHz
  • THD+N(Balanced)  : 0.0005% @ 1KHz
  • THD+N(Unbalanced)  : 0.0007% @ 1KHz
  • Output Level : 3.4 Vrms(Balanced, Condition no Load)
  • Output Level : 3.1 Vrms(Unbalanced, Condition no Load)

General Specifications

Model Opus#1s
Display 4″ TFT Touch Display(480*800), IPS Pannel
CPU & Memory ARM Cortex-A9 1.4GHz, Quad-Core Memory(RAM) : DDR3 1GB
Button Power, Play/Pause, FF, REW Vol+ / Vol-
Supported Audio Formats WAV, FLAC, ALAC, AIFF, WMA, DSD, MP3, OGG, APE(Normal, High, Fast)
EQ & Effect 10Band , NORMAL/USER1/2/3/4/5
Charge & Data Transfer USB Micro-B input (for charging & data transfer (PC & MAC))
Connection Mode : MTP (Media Device)
Outputs Phone (3.5mm) / Optical Out (3.5mm)
Balanced Out(2.5mm, 4-pole support)
Battery 4,000mAh/3.7V Li-Polymer
Battery Life(Play) Time & Charge Time Play: Approximately 11 hours(44.1KHz 16bit, Vol.70, 32ohm, LCD off),
Charge: 4 hours
Memory Built-in 32GB
External microSD(Max 256GB) x2 Supports SDXC exFAT, NTFS
Clock source/ Jitter 50ps(Typ)
OS Android
Supported OS Windows 7,8,10(32/64bit), MAC OS x 10.9 or higher
Dimensions 72mm(W) * 112mm(H) * 18mm(D)
Weight 190g