Tag: hi-res audio

Astell&Kern and Campfire Audio PATHFINDER collaboration redefines the hybrid in-ear monitor with the world’s first dual-chamber driver technology

Post author By armourpress
Post date 13 May 2022

Astell&Kern, the global leader in premium portable high-resolution audio devices, has teamed up with Campfire Audio, a U.S. designer and manufacturer of premium hand-built earphones, to introduce the PATHFINDER in-ear monitor (IEM). Following the successful SOLARIS X collaboration, the all-new jointly developed PATHFINDER takes hybrid IEM design to another level. These sophisticated earphones feature advanced Dual-Chamber Balanced Armature (BA) Driver technology to reach new heights in audio realism.

Astell&Kern PATHFINDER key features at a glance:

The world’s first Dual-Diaphragm Mid-Focused Balanced Armature (BA) Driver from Knowles results in a more natural reproduction in the key mid-range area.
Dual Balanced Armature drivers deliver extended and smoother high-frequency sounds
Custom-designed dual dynamic drivers with a hybrid diaphragm focus on low-end and mid-range frequencies
The first earphones to employ Campfire Audio’s new Radial Venting Technology for dynamic drivers to deliver more powerful bass and a larger soundstage.
Boasts all-new ribbon design; Silver-Plated OFC copper Litz cables minimize signal distortion
Features robust custom Beryllium Copper MMCX connectors for superior connection

World’s First Dual-Diaphragm Mid-Focused Balanced Armature (BA) Driver

A radical new driver design was needed to achieve a wider frequency range, realistic reproduction, and a more balanced sound. At the heart of this innovative new driver assembly is the all-new Dual-Diaphragm Balance Armature Driver from Knowles. By employing a single-coil operating two individual diaphragms, the design is akin to the twin-cylinder engine – delivering more horsepower and smoother operation than one with a single, larger piston.

Compared to a traditional BA model with a single, larger diaphragm, this all-new design incorporates two chambers, each housing its own diaphragm and drive rod actuated by a single coil. The result is a higher, more powerful output for its size than any other BA driver design while expressing a warmer and more natural mid-range in key areas of the music.

Dual BA drivers featuring T.A.E.C. technology

Further custom-dual BA drivers focus on delivering clearer and more precise high-frequency reproduction. Benefitting from Campfire Audio’s patented Tuned Acoustic Expansion Chamber technology (T.A.E.C.) technology, this design optimizes the performance by adjusting the volume of space available in front of the driver and provides a direct passage from the driver to your ear. This clever design extends high frequencies without sibilance or fatigue, delivering unsurpassed clarity and a smooth top end.

Dual custom dynamic drivers featuring Radial Venting Technology

Delivery of the rich and visceral bass sounds, while bringing greater definition to the lower midrange, arrives courtesy of dual-custom dynamic 10mm drivers. Boasting hybrid diaphragms and housed in a Radial Venting Acoustic Chamber 3D printed acoustic chamber, this all-new design by Campfire Audio, creates a faster and more powerful low-frequency response without unnecessary pressure or bass bloat. Each dynamic driver is vented through a specially designed opening located at the face of the driver. This acoustic chamber dramatically improves the expression of the drivers, and creates a larger soundstage, while preserving the unique sound of the dynamic driver.

3D-printed acoustic optimised construction

Campfire Audio’s high-end earphones are highly acclaimed by audiophiles around the globe, so it’s no wonder the attention to detail is key to delivering superior musical experience from the PATHFINDER. Each earphone integrates a 3D-printed, acoustically optimised interior chamber to enable the drivers to deliver the highest audio quality possible and create a natural and accurate sound.

Silver-Plated Copper Litz Cable design

PATHFINDER comes with three different flavoured cables to cover all unbalanced and balanced headphones connections (2.5mm, 3.5mm and 4.4mm.) The all-new Silver-Plated Copper Litz Cable consists of four conductors arranged side by side, designed to provide the most transparent and extended sounds possible. The soft-touch molded jacket that wraps around each conductor ensures both flexibility and durability. At the same time, a flat cable design prevents tangling, can be wound for easy storage and offers minimal cable distortion. The cable terminates with a robust metal connector housing.

Elsewhere, the custom beryllium/copper MMCX connectors provide more resilience against wear and tear, compared to regular brass connectors, while also offering a more robust mating mechanism. This harder material selection extends the life of the component and the earphone.

Comprehensive eartip selection

Along with the three types of headphone cables, PATHFINDER arrives with an array of eartip types and sizes so finding a secure and comfortable fit is simple. Included are five pairs of Final Audio E-Type tips (XS/S/M/L/XL), three pairs of Campfire Audio Marshmallow Tips (S/M/L), and three pairs of silicone tips (S/M/L). To keep your IEMs and accessories in pristine condition while in transit, a leather zip case, earphone protection sleeve, and a tip and cable storage pouch are also supplied.

Premium design philosophies

The brushed stainless steel-hewn inlay on PATHFINDER combines the two design philosophies of each company. Astell&Kern’s ‘light and shadow’ recognisable motif is present and correct, while Campfire Audio’s connection with nature is represented by this six-sided ‘Mountain Peak’ contour. Precision engineered, this design motif displays the value of the premium craftsmanship and innovation that Campfire Audio and Astell&Kern are renowned.

The Astell&Kern Pathfinder is priced £1,899 / $1,900 / €2,199 and available from mid-July 2022 from www.astellkern.co.uk

Technical Specifications

Transducer type:

[High] Custom Dual Balanced Armature Drivers + T.A.E.C.
[Mid] All-New ‘Dual Chamber’ Balanced Armature Driver Technology from Knowles
[Mid-Low to Sub-Bass] All-New Dual Custom 10mm Dynamic Drivers paired with Radial Venting Technology

Cable:

2.5mm Silver Plated Copper Cable
3.5mm Silver Plated Copper Cable
4.4mm Silver Plated Copper Cable

Material / Design:

Aluminum shell
Hand polished stainless steel threaded spout
Stainless steel Inlay and Parts

Frequency response: 5Hz-20kHz

SPL: 94dB @ 1kHz 13.49mVrms

Impedance: 6.2 Ohm @ 1kHz

Total harmonic distortion: Less than 1%

IMAGE DOWNLOADS

Tags astell&kern, earphones, headphones, hi-res audio, hi-res music, IEM, in-ear monitors, portable audio

Astell&Kern

Astell&Kern’s new KANN MAX high-resolution digital audio player achieves a higher power output in a more compact design

Post author By armourpress
Post date 13 May 2022

Astell&Kern, the global leader in premium portable high-resolution audio devices, reveals the KANN MAX portable digital audio player (DAP), the 4th model in its acclaimed KANN series. Adored by audiophiles all over the world for its performance focused on high output and ultra-clear sound, the KANN MAX achieves a higher power output (15Vrms) than its award-winning predecessor, theKANN ALPHA.

By applying advanced design and audio technology, this newfound power is also housed in a more compact and lightweight chassis. The result is an even wider variety of headphones, including sophisticated high impedance models, can be optimally driven without the need for additional amplification. Music fans can experience the original studio-quality sound without compromise – anywhere, anytime.

Astell&Kern KANN MAX key features at a glance:

Features 4-step gain level with maximum 15Vrms output to support a wider variety of headphones without distortion
Innovative circuit design with ultra-high output and low noise in an even smaller-sized player
Equipped with ESS ES9038Q2M Quad-DAC for exceptionally clear and balanced sound
Features proprietary TERATON ALPHA Sound Solution technology
Supports playback of high-resolution digital audio files up to 32-bit 768 kHz/Native DSD512
Bluetooth 5.0 and 24-bit wireless codec (aptX™ HD, LDAC) support
Replay Gain function uniformly adjusts volume playback from sound sources up to 24-bit/192 kHz.

Innovative circuit design = low noise levels

As the power output increases, so does the noise level that adversely effects the audio performance. Through innovative integrated circuit design, Astell&Kern is able to achieve a low noise-level while hitting the new 15Vrms ‘Super’ output setting.

First, an analogue volume controller is applied to deliver a rich dynamic range without any loss. Next, the power supply integrated circuit for each audio section (divided into DAC, volume, and amp) is separately configured so the interference ripple noise caused by the DC-DC power supply (the shaking noise phenomenon that occurs when power is supplied) is removed. Audio noise that can be heard amplified like audio sound in the operational amp is also minimised. Lastly, by dividing a printed circuit board (PCB) the same size as the larger KANN ALPHA into 12 layers, the smaller physical size of the KANN MAX is achieved.

Quad DAC and playback

The KANN MAX is the first player in the KANN series to be equipped with four ES9038Q2M DACs for a high-output performance. By employing Quad DACs – one DAC can each be fully allocated to four individual amp channels – the depth and realism of the sound source can be expressed to the fullest.

Combined with Astell&Kern’s amplifier circuit technology that naturally and delicately raises the strengths of the DAC, its precise decoding capabilities delivers the original studio-quality sound without distortion.

The KANN MAX also plays files up to 32-bit/768kHz PCM and native DSD512, while supporting 2.5mm, 3.5mm and 4.4mm headphones connections for accommodating a greater variety of headphones and in-ear monitors (IEM). In order to minimise contact noise from the output jacks, a gold PVD coating method is applied to the headphone connector instead of the typical rings employed by other products. This improves both design and function.

The KANN MAX also adds Replay Gain functionality to the mix. This automatically and uniformly adjusts volume playback from sound sources up to 24-bit/192 kHz so playlists can be enjoyed throughout without reaching for the volume.

KANN MAX featuring TERATON ALPHA technology

The result of extensive research and development, Astell&Kern’s patented TERATON ALPHA Sound Solution is designed to deliver audio playback close to the original sound. It effectively removes power noise and provides efficient power consumption and amplification right through to the audio output interface stage where the digital-to-analogue signal conversion (DAC) takes place – audio technology Astell&Kern has consistently developed and perfected over the years.

Connectivity

A BT Sink function connects the KANN MAX to an external device, such as a smartphone, via Bluetooth, enabling music to be played back in high-quality on the player. Elsewhere the KANN MAX boasts Bluetooth® 5.0, providing greater range and a more stable wireless connection to headphones and, along with support for 24-bit aptX™ HD and LDAC codecs, offers the best possible wireless sound quality.

Alongside Wi-Fi support, the KANN MAX features AK File Drop for easier wireless file transfers. Users can wirelessly transfer files through a PC, smartphone, or FTP program located on the same network to make music management even more convenient.

Battery and storage

Although smaller in size, all power-related components and the power circuit been developed to achieve 13 hours of continuous playback. The KANN MAX harbours 64GB on-board memory that can be expanded up to 1TB via a microSD card slot, meaning users can carry thousands of hi-res albums with them at all times.

Powerful streamlined design

Continuing the bold design concept of the KANN series, this player boasts a more streamline profile, emphasised by the hexagonal top line that narrows sharply from the bottom up, and the hairline treatment on the back that expresses both a sense of speed and power.

The Astell&Kern KANN MAX is priced £1,199 / $1,300 / €1,499 and is available mid-June 2022 from www.astellkern.co.uk

The Astell&Kern KANN MAX cases come in three colours: black, blue and beige, priced £109 / $110 / €129 and are mid-June 2022 from www.astellkern.co.uk

General Specifications

Body Colour: Anthracite Gray

Body Material: Aluminium

Display: 4.1-inch, 720 x 1280 touch screen

Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF

Sample Rate:

PCM: 8kHz ~ 768kHz (8/16/24/32bits per Sample)
DSD Native: DSD64 (1bit 2.8MHz), Stereo / DSD128 (1bit 5.6MHz), Stereo / DSD256 (1bit 11.2MHz)
DSD512(1bit, 22.4MHz) Stereo

Output Level:

[Low] Unbalanced 2Vrms / Balanced 4Vrms (Condition No Load),
[Mid] Unbalanced 4Vrms / Balanced 8Vrms (Condition No Load),
[High] Unbalanced 6Vrms / Balanced 12Vrms (Condition No Load),
[Super] Unbalanced 8Vrms / Balanced 15Vrms (Condition No Load)

CPU: Quad-core

DAC: ESS ES9038Q2M x4 (Quad-DAC)

Decoding: Supports up to 32-bit/768kHz Bit-to-Bit Playback

Input: USB Type-C input (for charging & PC & MAC)

Outputs:

Unbalanced Out (3.5mm), Optical Out (3.5mm)
Balanced Out (2.5mm, only 4-pole supported | 4.4m, only 5-pole supported)

Wi-Fi: 802.11 b/g/n (2.4GHz)

Bluetooth: V5.0 (A2DP, AVRCP, Qualcomm® aptX™ HD, LDAC)

Dimensions: 2.68-inches (68.3mm)[W] x 4.6-inches (117mm)[H] x 0.92-inches (23.6mm)[D]

Weight: about 10.76oz (305g)

Feature Enhancements: Firmware upgrade supported (OTA)

Audio specifications*

Frequency Response:

±0.023dB (Condition: 20Hz~20kHz) Unbalanced / ±0.026dB (Condition: 20Hz~20kHz) –
Balanced ±0.035dB (Condition:20Hz~70kHz) Unbalanced / ±0.072dB (Condition: 20Hz~70kHz) Balanced

S/N:

114dB @ 1kHz, Unbalanced
115dB @ 1kHz, Balanced

Crosstalk:

-124dB @ 1kHz, Unbalanced
-135dB @ 1kHz, Balanced

THD+N:

0.0003% @ 1kHz, Unbalanced
0.0004% @ 1kHz, Balanced

IMD SMPTE:

0.0007% 800Hz 10kHz (4:1) Unbalanced
0.0007% 800Hz 10kHz (4:1) Balanced

Output Impedance:

Unbalanced Out 3.5mm (1ohm)
Balanced Out 2.5mm (1.6ohm), 4.4mm (1.6ohm)

Clock Jitter: 25ps (Typ)

Reference Clock Jitter: 70ps

*Audio specifications based on Low Gain.

Storage capacity

Built-in Memory: 64GB [NAND]

External Memory: microSD x1 (Max. 1TB)

Battery

Capacity: 5,600mAh 3.8V Li-Polymer

Charge Time: about 3.5 hours (9V 1.67A Fast Charging) | 5.5hours (5V 2A General Charging)

Playback Time: about 13 hours (Standard: FLAC, 16bit, 44.1kHz, Unbalanced, Vol.40, LCD Off, LED On, Low Gain)

Supported OS: Windows 7,8,10(32/64bit) MAC OS X 10.7

IMAGE DOWNLOADS

Tags amplifier, astell&kern, audio, DAC, DAP, earphones, headphones, hi-res audio, hi-res music, high resolution audio, music, portbale music player, Wireless

Astell&Kern

Astell&Kern’s latest IEM, the AK ZERO1, features three different types of drivers for a new hybrid sound

Post author By armourpress
Post date 15 October 2021

Astell&Kern, the global leader in premium portable high-resolution audio devices, introduces its latest in-ear monitor (IEM), the AK ZERO1, featuring three different types of drivers to deliver a ground-breaking hybrid sound. Composed of a micro planar dynamic driver, dual balanced armature (BA) drivers and a dynamic driver, this unique design combines the sonic characteristics of each driver to produce an unprecedented natural audio. Astell&Kern has set new standards in IEM engineering to get the music fan closer to the original studio sound.

Astell&Kern AK ZERO1 features and innovations include:

Three different types of drivers: Planar, balance armature and dynamic
Perfectly harmonised driver structure
Precision crossover network design
Acoustic chamber created using 3D printed technology
Precise CNC-machined metal housing
Hi-fi-grade pure silver-coated OFC cable for improved transparency of the audio signal

Micro planar dynamic driver

The Micro Rectangular Planar Dynamic Driver is a specially developed, highly advanced driver that allows a planar driver design, normally difficult to scale down for headphones, to be applied to in-ear monitors. Adopting a sturdy and lightweight planar membrane to minimise frequency loss, this is combined with a vibration panel boasting a high-polymer and thin metal film to create crystal clear and dynamic high frequencies.

Dual balanced armature and dynamic drivers

The AK ZERO1’s driver system also features dual BA drivers, using custom-designed coils to deliver transparent vocals with super-low distortion. Couple this with the single 5.6 mm dynamic driver to ensure rich, controlled and deep low frequencies and the AK ZERO1 is poised to deliver its pioneering hybrid sound.

Crossover design

To realise this new sound through the ideal frequency response, a Crossover Network design was generated based on a thorough understanding of each driver’s parameters. Once established, each driver is carefully placed in the optimal position, enclosed in specifically designed acoustic chambers manufactured with 3D printing technology. These precision enclosures cleverly eliminate unnecessary movement and resonance from the drivers to ensure a stable performance. Lastly, the main precision-tooled housing reduces internal and external vibrations to deliver the most focused and accurate sound possible.

Hi-fi grade pure silver-coated cables

To further maximise the audio performance the AK ZERO1 arrives equipped with a pure silver-coated OFC cables. Exquisitely crafted with high-purity silver plating and copper, alongside aluminum plugs, this design strives to maintain transparency of the audio signal. Elsewhere, the MMCX connectors ensure a prime-quality connection between the ear housing and cable, offering a long-lasting and stable performance.

NEW 4.4mm MMCX Cable accessory

For discerning audiophiles looking to experience the highest quality audio possible from their AK ZERO1 IEMs or any other MMCX-connector compatible headphones, Astell&Kern is launching an optional 4.4mm cable. The PEP11 sports larger aluminium-machined 4.4mm plugs and features the same top-quality high-purity silver plating and copper cable.

Signature Astell&Kern design

Astell&Kern’s recognisable bold diagonal design language continues on the AK ZERO1, with the premium cut metal surface brilliantly reflecting the light. The shape of the housing and the slender ear nozzles have been carefully designed and refined to not only provide a secure and comfortable fit, but to deliver the sound efficiently and accurately through your ears. To further provide a snug fit, five different-sized pairs of silicone ear tip and one set of foam tips are supplied, along with a carry case to keep your IEMs pristine during transit.

The Astell&Kern AK ZERO1 is priced £649 / $699 / €749 and is available now from www.astellkern.co.uk and local independent dealers.

The Astell&Kern PEP11 is priced £119 / $130 / €139 and is available from www.astellkern.co.uk and local independent dealers.

Technical specifications

AK ZERO1

Drivers: Hybrid Drivers

Special Micro Rectangular Planar Dynamic Driver x1
Custom Balanced Armature Driver x2
5.6mm Micro Dynamic Driver x1

Connector type: MMCX

Housing material: Aluminum

Frequency Response: 25Hz–30KHz*

SPL: 96dB@1KHz (1mW)*

Impedance: 16Ω@1KHz*

Total Harmonic Distortion: 0.7%@1KHz

PEP11

Connector type: MMCX

Cable core: 4

Cable material: Silver, Copper

Plug: 4.4mm

IMAGE DOWNLOADS

Tags astell&kern, earphones, headphones, hi-res audio, hi-res music, IEM, in-ear monitors, portable audio

Astell&Kern

Astell&Kern’s latest A&ultima SP2000T portable digital audio player packs a next gen triple amp system

Post author By armourpress
Post date 27 August 2021

Astell&Kern, the global leader in premium portable high-resolution audio devices, introduces its newest member of its A&ultima series, the SP2000T. Building on the class-leading sound of the A&ultima SP2000, this latest player is the first to feature a Quad-DAC, a Replay Gain function and a new Triple Amp System allowing music fans to switch between the different sonic characteristics of a normal OP-AMP (operational amp) mode, a vacuum TUBE AMP and a HYBRID AMP mode that combines the tube amp’s warm analog performance and Op-Amp’s high-resolution clarity.

Astell&Kern A&ultima SP2000T new audio design and feature innovations include:

Triple Amp System takes portable music listening to a new acoustic level.
Vacuum tube amplifier compatible with 2.5mm, 3.5mm and 4.4mm output jacks.
Equipped with an ESS ES9068AS QUAD-DAC for balanced and ultra-detailed sound.
New TERATON ALPHA Sound Solution technology.
Replay Gain function uniformly adjusts volume playback from sound sources up to 24-bit/192 kHz.
Dual-Band Wi-Fi Support for improved wireless connection.
Internal mechanical design to minimise noise.

NEXT GENERATION AMPLIFIER TECHNOLOGY

Boasting the most advanced amp technology of any portable player, SP2000T owners can toggle between three-amp modes to find the optimal sound to suit the music they are listening to. Based on the set-up from the original SP2000, the OP-AMP configuration offers ultra-clarity and a dynamic playback. Switch to the TUBE AMP mode and the uniquely warm and musical audio associated with vacuum tube amplifiers will be revealed.

To realise the sonic flavour of a vacuum tube amp, the SP2000T is equipped with the portable-friendly dual-triode KORG Nutube. Featuring an anode grid filament structure that operates the same as a triode vacuum tube, this smaller component, consumes far less power, yet delivers the same audio with rich overtones. The Nutube also offers a reliable continuous playback time of approximately 30,000 hours with support for the player’s onboard 2.5mm, 3.5mm and 4.4mm headphone output jacks.

BEST OF BOTH AMP WORLDS

The culmination of Astell&Kern’s rich amp design heritage and expertise, the new innovative HYBRID MODE brings together the distinctive sonic DNA of the detailed OP-AMP and expressive TUBE AMP modes, while providing five options with different mix ratios of each amp’s sound characteristics to best serve the music being played.

SPECIAL INTERNAL DESIGN

To overcome internal microphonic resonances generated by the vacuum tubes that can seriously impact sound quality, Astell&Kern’s audio engineers painstakingly designed a clever modular structure physically separate from the PCB (Printed Circuit Board). Firstly, the vacuum tubes are fixed with flexible silicone covers to minimize any mechanical vibration, while the design uses magnetic forces to float the amp in the air to reduce internal noise.

Further steps are taken to eliminate electromagnetic interference caused when internal components are in operation by applying highly conductive, hyper-pure silver plating on the existing shield cans for extra defence against these sound performance-effecting disturbances.

QUAD-DAC FOR SUPERIOR SOUND

The SP2000T comes equipped with four ES9068AS DACs, with two DACs per channel dedicated for decoding. The result is a more detailed and balanced sound with great depth and spatial realism.

This latest model is also the first to feature Replay Gain functionality that automatically and uniformly adjusts volume playback from sound sources up to 24-bit/192 kHz so playlists can be enjoyed throughout without reaching for the volume.

INTRODUCING TERATON ALPHA SOUND SOLUTION TECHNOLOGY

Following on from the A&futura SE180 player, the SP2000T is the second model to adopt Astell&Kern’s patented TERATON ALPHA Sound Solution. The result of extensive research and development, it is designed to deliver audio playback close to the original sound. The onboard DAC is not the only factor that determines the quality of sound from a DAP: Power, noise, signal conversion, circuit structure all effect the sound signature. Only when each and every one of these elements are optimised, can a player produce sound as close as the music artist and producer intended.

TERATON ALPHA technology, effectively removes power noise and provides efficient power consumption and amplification right through to the audio output interface stage where the digital-to-analogue signal conversion (DAC) takes place – audio technology Astell&Kern has consistently developed and perfected over the years.

FULL HD DISPLAY

Album artwork pops from the screen with the A&ultima SP2000T boasting a full HD display. This 5-inch touchscreen packs a 1920×1080 pixel resolution, 16.7 million colours and 441 PPI, resulting in a clean and sharp user-interface design.

CONNECTIVITY

Alongside with improved dual-band Wi-Fi support, the SP2000T features AK File Drop for easier wireless file transfers. Users can wirelessly transfer files through a PC, smartphone, or FTP program located on the same network to make music management even more convenient.

The new BT Sink function connects the A&ultima SP2000T to an external device, such as a smartphone, via Bluetooth, enabling music to be played back in high-quality on the Astell&Kern player.

Elsewhere A&ultima SP2000T boasts Bluetooth® 5.0, providing greater range and a more stable wireless connection to headphones and, along with support for 24-bit aptX™ HD and LDAC codecs, offers the best possible wireless sound quality.

The A&ultima SP2000T harbours 256GB on-board memory that can be expanded up to 1TB via a microSD card slot, meaning users can carry thousands of hi-res albums with them at all times.

The Astell&Kern A&ultima SP2000T is priced £1,999 / $2,399 / €2,299 and is available now from www.astellkern.co.uk and local independent dealers.

Technical specifications*

Body Colour: Onyx Black

Body Material: Aluminum

Display: 5.0-inch touchscreen, FHD 1920 x 1080 pixels

Supported Audio Formats: WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF

Sample rate:

PCM: 8kHz ~ 384kHz (8/16/24/32bits per Sample)
DSD Native: DSD64(1bit 2.8MHz), Stereo / DSD128(1bit 5.6MHz), Stereo / DSD256(1bit 11.2MHz), DSD512(1bit, 22.4MHz) Stereo

Output Level: Unbalanced 3Vrms │ Balanced 6Vrms (Condition No Load)

CPU: Quad-core

DAC: ESS ES9068AS x4 (Quad-DAC)

Vacuum Tube: KORG Nutube 6P1

Decoding: Support up to 32bit / 384kHz Bit to Bit playback

Input: USB Type-C input (for charging & PC & MAC)

Outputs:

Unbalanced Out (3.5mm), Optical Out (3.5mm)
Balanced Out (2.5mm, only 4-pole supported / 4.4m, only 5-pole supported)

Wi-Fi: 802.11 a/b/g/n/ac (2.4/5GHz)

Bluetooth®: V5.0 (A2DP, AVRCP, Qualcomm® aptX™ HD, LDAC)

Dimensions: 3.07″ (78.1mm)[W] x 5.55″ (141.1mm)[H] x 0.68″ (17.5mm)[D]

Weight: about 10.89oz (309g)

Feature Enhancements: Firmware upgrade supported (OTA)

Frequency Response:

±0.024dB (Condition: 20Hz~20kHz) Unbalanced / ±0.038dB (Condition: 20Hz~20kHz) Balanced
±0.027dB (Condition: 20Hz~70kHz) Unbalanced / ±0.052dB (Condition: 20Hz~70kHz) Balanced

S/N: