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Astell&Kern

Astell&Kern’s striking ACRO BE100 Bluetooth wireless speaker delivers superior hi-fi grade stereo sound

Astell&Kern, the global leader in premium high-resolution audio devices debuts the ACRO BE100 Bluetooth wireless speaker. The result of Astell&Kern’s advances in audio technology evolved over decades, this speaker delivers superior room-filling, hi-fi calibre stereo sound that belies it compact profile. Boasting a dedicated 32-bit DAC and support for the latest 24-bit hi-res quality wireless streaming codecs, the ACRO BE100 is the Bluetooth speaker of choice for audiophiles and music enthusiasts alike.

Astell&Kern ACRO BE100 key features include:

  • Unique light and shadow effect design.
  • Dedicated 32-bit hi-fi grade DAC.
  • Support for 24-bit hi-res codecs aptX™HD and LDAC.
  • Superior stereo sound from a custom 4″ Kevlar woofer and 1.5″ silk dome tweeters.
  • Onboard Class-D amplifier with 55W of total power.
  • Ability to adjust treble and bass sound settings.
  • Arrives in stylish white or black finishes to fit into any interior space.

Design for life

Sporting Astell&Kern’s recognisable signature angled design, influenced by the reflective interplay of shadow and light, the ACRO BE100 makes a striking design statement that can seamlessly fit into any living space. The triangular shapes on front metal-grille mesh compliments the premium faux leather finish of main unit, while the top aluminium-hewn knurling-patterned knob allows accurate fine tuning of the volume, level-by-level, with a gentle touch.

The area below the volume control illuminates and acts as an indicator, flashing different colours for each mode or volume level, helping users to easily identify the speaker status and control it intuitively.

Dedicated DAC

Declaring its hi-fi sound credentials, the BE100 arrives with an onboard 32-bit high-quality DAC (digital-to-analogue converter). Where most common Bluetooth speakers rely on the limited DAC embedded into the Bluetooth chipset, the BE100’s dedicated DAC is based on the technology from Astell&Kern award-winning portable digital audio players. The separate internal circuitry ensures it has the capabilities to deliver a superior and detailed audio performance beyond its rivals.

Stereo sound

To help realise this class-leading sonic performance, the mid/bass driver and 2x tweeters have been custom-built. The 4-inch mid-bass cone is made from ultra-durable yet lightweight Kevlar fabric to improve response speed and timing and provide a more accurate bass sound. Furthermore, the rear port is installed to extend the speaker’s bass response. The two silk dome tweeters produce crystal clear high-frequencies, while sound-absorbing material inside the wooden cabinet reduces resonance by completely sealing the interior, enabling a full, rich fidelity.

Classy amp

Poorly designed amplifiers can produce clipping sounds at maximum volume. Employing its renowned expertise in amp design technology, Astell&Kern has developed a Class-D amplifier that guarantees consistent sound quality without distortion even at top volume.

The amp’s onboard digital crossover also ensures a clear and precisely timed sound by splitting the audio signal into different frequency range. In addition, dynamic range control (DRC) is used to protect the speaker unit as it hits maximum output power. To minimise jitter – the undesired deviation in time from the transmitted signal – the Bluetooth chipset is equipped with a 50ps clock to enable incredibly accurate sound.

High-definition connectivity

The latest high-definition wireless connectivity options are covered with the ACRO BE100 boasting Bluetooth® 5.0, providing greater range and a more stable wireless connection when streaming from a compatible device such as a smartphone, tablet or laptop. Support for 24-bit aptX™ HD (48khz) and LDAC (96khz) codecs, offers the best possible wireless sound quality.

Elsewhere, music fans can tweak the sound with the onboard five-level treble and bass settings, while a 3.5mm AUX input allows the connection of Astell&Kern’s portable digital audio players and similar devices.

Please note a version of the ACRO BE100 featuring FM radio is available in selected countries.

The Astell&Kern ACRO BE100 is priced £449 / €529 / $400 and will be available from December from www.astellkern.co.uk and local independent dealers.

TECHNICAL SPECIFICATIONS

Mid/Bass driver: 1x 4-inch

Tweeter: 2x 1.5-inch

Amplifier output: 55W (1x 25W + 2x 15W)

Frequency response: 50 – 20kHz

Maximum sound level: 94dB SPL@1m

Bluetooth version: 5.0

Bluetooth codecs: SBC, AAC, aptX™HD, LDAC

Power input: 19V / 3,43A

AUX: 3.5mm stereo

Dimensions: 261 x 164 x 171mm

Weight: about 3.2kg

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A&norma SR25 MKII: Astell&Kern unveils the second-generation model of its award-winning, ultra-portable hi-res audio player

Astell&Kern, the global leader in premium portable high-resolution audio devices, introduces the second generation model of its popular and award-winning entry-level player, the A&norma SR25 MKII. Every aspect admired about the original SR25 is retained with the new model improving on the audio performance, adding new features, such as a balanced 4.4mm headphone jack, and tweaking its already eye-catching and ultra-compact design. The A&norma SR25 MKII represents the perfect entry-point into Astell&Kern’s unrivalled world of high-resolution music playback on-the-move.

Astell&Kern A&norma SR25 MKII feature upgrades include:

  • Improved sound performance
  • 4.4mm headphone jack to deliver enhanced dynamic range, bass response, wider soundstage, clearer imaging and more detail in the audio source.
  • Replay Gain function to uniformly adjust volume playback from sound sources up to 24-bit/192 kHz.
  • AK File Drop for easier wireless file transfers.
  • BT Sink function for simpler connection of the SR25 MKII to an external Bluetooth device
  • Extra internal silver-plated shielding, first seen in the higher-end SP2000T, to protect from electromagnetic interference.
  • New, more defined volume wheel design.
  • New darker and stylish Mercury Dark Silver finish.

Even more balance and detail

This new pocket powerhouse may have a familiar look and feel but it delivers superior sound through Astell&Kern’s latest advanced audio design technology. Presenting more detail than its predecessor, the natural high-resolution sonics deliver clearly defined upper and lower ranges and a deeper, more rounded sound.

The addition of the balanced 4.4mm headphone jack, joining the 2.5mm (balanced) and 3.5mm (unbalanced) outputs, means music fans can connect an even wider variety of headphones, IEM’s and devices. The 4.4mm balanced output provides improved dynamic range and bass response, supports a wider soundstage, while capturing clear imaging and subtle details in the audio source.

As with the first-generation model, the SR25 MII handles an array of high-resolution music formats and sample rates. Support for native playback of DSD256 and 32-bit/384KHz PCM high-resolution audio, brings every music fan closer to hearing the artist’s original studio sound. Should you want to listen to your favourite hi-res music over a wireless connection, the SR25 MKII features the latest high-definition Bluetooth wireless codecs: LDAC and aptX™ HD.

Replay gain

The SR25 MKII 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.

Extra connectivity options

First introduced in the A&futura SE180 player, AK File Drop ensure 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. Secondly, the new BT Sink function connects the SR25 MKII to an external device, such as a smartphone, via Bluetooth, enabling music to be played back in high-quality on the Astell&Kern player.

Added internal protection

Astell&Kern players apply shield cans to eliminate electromagnetic interference caused when internal components are in operation. First introduced in the higher-end A&ultima SP2000T, the SR25MKII has taken further measures by applying highly conductive, hyper-pure silver plating on the existing shield cans for extra defence against these sound performance-effecting disturbances.

Refined design

The SR25 MKII inherits the overall design identity of the original SR25 model, sporting the recognisable angled top and bottom bezel edges to give the impression the smaller inner rectangle is floating freely from the main body. The new look pattern on the side volume wheel is also more defined and tactile, drawing more attention to this area of the player. Lastly, the new darker hue of silver (Mercury D. Silver) stands apart from the original’s Moon Silver livery.

Protect your A&K player

A protective case in a choice of three eye-catching finishes is available to compliment the SR25 MKII and safeguard this premium player from the vagaries of a life on the road. Made from a soft and durable LASKINA® polyurethane fabric from Italy, this memory material offers protection against external shocks and scratches, while providing excellent grip. The fabric also mimics the texture of classic, high-end leather, for a luxurious and vibrant look, including natural leather-style creases and shine. Finishes include Denim Blue, Orange and Black.

The Astell&Kern A&norma SR25 MKII is priced £699 / $749 / €799 and will be available early November from www.astellkern.co.uk and local independent dealers.

The Astell&Kern A&norma SR25 MKII case is priced £59 / $60 / €69 and will be available early November from www.astellkern.co.uk and local independent dealers.

TECHNICAL SPECIFICATIONS

General Specifications

Model: SR25 MKII

Body Colour: Mercury Dark Silver

Body Material: Aluminium

Display: 3.6-inch HD 720 x 1280 px touch screen

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

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), Stereo

Output Level: Unbalanced 2Vrms │ Balanced 4Vrms (Condition No Load)

CPU: Quad-core

DAC: Ciruss Logic CS43198 x2 (Dual-DAC)

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

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

Outputs: Unbalanced 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: V4.2 (A2DP, AVRCP, Qualcomm® aptX™ HD, LDAC)

Dimensions: 2.5” (63.5mm)[W] x 4.26” (108.3mm)[H] x 0.63” (16.1mm)[D]

Weight: about 178g (6.27oz)

Firmware upgrade supported (OTA)

Operating Temperature: 0℃ ~ + 40℃ (32℉~ 104℉)

Audio performance

Frequency Response

  • ±0.014dB (Condition : 20Hz~20kHz) Unbalanced │ ±0.011dB (Condition : 20Hz~20kHz) Balanced
  • ±0.010dB (Condition : 20Hz~70kHz) Unbalanced │ ±0.012dB (Condition : 20Hz~70kHz) Balanced

S/N

  • 122dB @ 1kHz, Unbalanced
  • 124dB @ 1kHz, Balanced

Crosstalk

  • -138dB @ 1kHz, Unbalanced
  • -144dB @ 1kHz, Balanced

THD+N

  • 0.0006% @ 1kHz, Unbalanced
  • 0.0005% @ 1kHz, Balanced

IMD SMPTE

  • 0.0004% 800Hz 10kHz (4:1) Unbalanced
  • 0.0003% 800Hz 10kHz (4:1) Balanced

Output Impedance

  • Unbalanced Out 3.5mm (1.2ohm)
  • Balanced Out 2.5mm (1.8ohm), 4.4mm (1.7ohm)

Clock Source

Clock Jitter: 25pS (Typ)

Reference Clock Jitter: 70ps

Storage Capacity

Built-in Memory: 64GB [NAND]

External Memory: microSD x1 (Max. 1TB)

Battery

Capacity: 3,150mAh 3.7V Li-Polymer

Charge Time: about 2.5hours (5V 2A General Charging)

Playback Time: about 20hours (Standard : FLAC, 16bit, 44.1kHz, Unbalanced, Vol.50, EQ Off, LCD Off)

Supported OS

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

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

August 27th 2021, UK 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 will be available from October 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:

  • 121dB @ 1kHz, Unbalanced
  • 123dB @ 1kHz, Balanced

Crosstalk:

  • -137dB @ 1kHz, Unbalanced
  • -142dB @ 1kHz, Balanced

THD+N:

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

IMD SMPTE:

  • 0.0004% 800Hz 10kHz (4:1), Unbalanced
  • 0.0003% 800Hz 10kHz (4:1), Balanced

Output Impedance:

  • Unbalanced Out 3.5mm (1ohm)
  • Balanced Out 2.5mm (1.5ohm), 4.4mm (1.5ohm)

Clock Source

Clock Jitter: 25ps (Typ)

Reference Clock Jitter: 70ps

*Audio specifications will be based on Operational (OP) AMP.

Storage Capacity

Built-in Memory: 256GB [NAND]

External Memory: microSD x1 (Max. 1TB)

Battery

Capacity: 4,200mAh 3.8V Li-Polymer

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

Playback Time: About 9hours (Standard: FLAC, 16bit, 44.1kHz, Unbalanced, Vol.50, LCD Off, LED On, OP AMP Mode)

Supported OS 

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

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Shape your sound with Astell&Kern’s A&futura SE180 modular DAC digital audio player

Astell&Kern, the global leader in premium portable high-resolution audio devices, introduces the SE180, the third model in its award-winning A&futura series and the audio specialist’s first player to feature interchangeable all-in-one DAC modules. Expanding on the multi-DAC innovation first introduced with the SE200, music fans can customise their sound with different audio-flavoured DACs to find the hi-fi-grade sonics that suit them.

The A&futura SE180 is the company’s most advance player yet and is the first model to boast Astell&Kern’s TERATON ALPHA Sound Solution technology for improved audio, an enhanced user-interface design, a full HD display and added advanced connectivity functionality.

Astell&Kern A&futura SE180 new audio design and feature innovations include:

  • Interchangeable all-in-one DAC modules
  • New TERATON ALPHA Sound Solution technology
  • Full HD display for improved image quality
  • Enhanced user interface more consistent with an Android smartphone experience
  • AK File Drop for easier wireless file transfers
  • BT Sink function for simpler connection of the SE180 to an external Bluetooth device

INTERCHANGEABLE DAC MODULES

The innovative interchangeable DAC design not only offers a new level of audio flexibility for the user but also improves the sound performance. By physically separating the main body from the all-in-one module, power and radio frequency (RF) noise generated by the main unit is completely blocked. This creates an independent structure that prevents noise from interfering with music playback.

The module slots easily into place from the top of the player and features an innovative double locking mechanism that securely connects each component. Expertly engineered, with flowing smooth lines between each part, there isn’t a noticeable trace of two separate elements in play.

The A&futura SE180 arrives with a default module featuring the SEM1 ESS ES9038PRO, an 8-channel DAC traditionally used for premium home audio equipment. This DAC provides a wider dynamic range and greater detail, while audio file support is extensive for high-resolution fans, with the SEM1 DAC capable of playing up to 32-bit/384kHz PCM and native DSD256 files.

The SEM2 Asahi Kasei AK4497EQ Dual DAC will be the first optional module available on launch with the ability to play files up to 32-bit/768kHz PCM and native DSD512. Both modules support 2.5mm, 3.5mm and 4.4mm headphones connections for accommodating a greater variety of headphones and in-ear monitors (IEM), while there is support for MQA playback via downloaded MQA audio files and through the Tidal music app. The next DAC module will be released later in the year with another model following in the first half of 2022.

INTRODUCING TERATON ALPHA SOUND SOLUTION 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. 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.

With the A&futura SE180 the first to harbour TERATON ALPHA technology, 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.

ENHANCED USER INTERFACE DESIGN

The A&futura SE180 user-interface has been enhanced to offer an experience consistent with an Android smartphone. A new navigation bar pinned at the bottom of the screen allows users to control playback and skip tracks from any screen, while a single swipe returns to the previous screen. Like the SE200, users can also discern the volume level, file type and bitrate being played thanks to the colour-coded LED light surrounding the player’s volume wheel.

FULL HD DISPLAY

Album artwork pops from the screen with the A&futura SE180 is the first Astell&Kern player to boast 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

The A&futura SE180 is also the first model to feature 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 newly introduced BT Sink function connects the A&futura SE180 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 the A&futura SE180 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&futura SE180 features 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.

To keep the A&futura SE180 in pristine condition but still stylish, a Black or Navy leather case is available. Using quality Badalassi Carlo Minerva leather, this material is made from a process called ‘full vegetable tanning’, a traditional method used in Italy for over 200 years, that brings out the special characteristic of leather while creating a natural tanning look. A variety of trees and plants are involved in this tanning process which takes about 40 days to complete, while containing oil that allows the leather to shine the more it is used.

The Astell&Kern A&futura SE180 (with SEM1 ESS ES9038PRO DAC module) is priced £1,399 / $1,499 / €1,599 and is available now from www.astellkern.co.uk

The optional Astell&Kern SEM2 DAC (Asahi Kasei AK4497EQ Dual DAC Module) is priced £319 / $349 / €379 and is available now from www.astellkern.co.uk

Technical Specifications

Astell&Kern A&futura SE180

Body Material: Aluminium

Colour: Moon Silver

Display: 5-inch, 1920×1080 FHD

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

Services: (Tidal Masters), Local files, External USB, MQA-CD (ripped)

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

Charging: 9V 1.67A / 5V 2A

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

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

Dimensions:

  • 3.03″(77mm)[W] x 5.09″(129.2mm)[H] x 0.78″(19.9mm)[D] (Only body)
  • 3.03″(77mm)[W] x 5.4″(137.2mm)[H] x 0.78″(19.9mm)[D] (Combined with a module)

Weight: 9.88oz (280g)

Feature Enhancements: Firmware upgrade supported (OTA)

SAR: Body 10g SAR (W/Kg) _ WLAN 2.4Ghz: 0.016

Clock Jitter: 25ps (Typ)

Reference Clock Jitter: 800 Femto Seconds

Wheel: LED Light (LED Indicator)

Built-In Memory: 256GB (NAND)

External Memory: microSD Card x1 (Max. 1TB)

Battery Capacity: 3,800mAh 3.8V Li-Polymer Battery

Charge Time: About 5hours (Standard: 5V / 2A Charging), about 3hours (Fast: 9V / 1.67A Charging)

Supported OS: Windows 8,10(32/64bit) Mac OS X 10.7 and up

Astell&Kern SEM1 DAC

Body Material: Aluminium, Stainless Steel, Polycarbonate

Body Colour: Moon Silver

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), Stereo

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

Output Level:

  • [Normal Gain] Unbalanced 2Vrms / Balanced 4Vrms (Condition No Load)
  • [High Gain] Unbalanced 3Vrms / Balanced 6Vrms (Condition No Load)

DAC: ESS ES9038PRO (Single DAC)

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

Dimensions: 3.03″(77mm)[W] x 2.99″(76mm)[H] x 0.78″(19.9mm)[D]

Weight: 3.53oz (100g)

Playback Time: About 10.5hours (FLAC, 16bit, 44.1kHz, Vol.50, LCD Off)

Frequency Response:

  • ±0.04dB (Condition : 20Hz~20kHz) Unbalanced /
  • ±0.04dB (Condition : 20Hz~20kHz) Balanced
  • ±0.07dB (Condition : 20Hz~70kHz) Unbalanced /
  • ±0.06dB (Condition : 20Hz~70kHz) Balanced

Signal-to-noise ratio:

  • [Normal Gain] 122dB @ 1kHz, Unbalanced / 126dB @ 1kHz, Balanced
  • [High Gain] 125dB @ 1kHz, Unbalanced / 129dB @ 1kHz, Balanced

Crosstalk:

  • [Normal Gain] -138dB @ 1kHz, Unbalanced / -145dB @ 1kHz, Balanced
  • [High Gain] -138dB @ 1kHz, Unbalanced / -147dB @ 1kHz, Balanced

THD+N:

  • [Normal Gain] 0.0005% @ 1kHz, Unbalanced / 0.0004% @ 1kHz, Balanced
  • [High Gain] 0.0007% @ 1kHz, Unbalanced / 0.0006% @ 1kHz, Balanced

IMD SMPTE: 0.0004%, 800Hz 10kHz (4:1), Unbalanced / 0.0004%, 800Hz 10kHz (4:1), Balanced

Output Impedance: 3.5mm (1ohm) / 2.5mm (1.5ohm) / 4.4mm (1.5ohm)

Astell&Kern SEM2 DAC

Body Material: Aluminium, Stainless Steel, Polycarbonate

Body Colour: Moon Silver

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), Stereo / DSD512(1bit 22.4MHz), Stereo

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

Output Level:

  • [Normal Gain] Unbalanced 2Vrms / Balanced 4Vrms (Condition No Load)
  • [High Gain] Unbalanced 3Vrms / Balanced 6Vrms (Condition No Load)

DAC: AKM AK4497EQ x2 (Dual DAC)

Decoding: Support up to 32bit / 768kHz Bit-to-Bit playback

Dimensions: 3.03″(77mm)[W] x 2.99″(76mm)[H] x 0.78″(19.9mm)[D]

Weight: 3.53oz (100g)

Playback Time: About 10.5hours (FLAC, 16bit, 44.1kHz, Vol.50, LCD Off)

Frequency Response:

  • ±0.07dB (Condition: 20Hz~20kHz) Unbalanced /
  • ±0.06dB (Condition: 20Hz~20kHz) Balanced
  • ±0.68dB (Condition: 20Hz~70kHz) Unbalanced /
  • ±0.67dB (Condition: 20Hz~70kHz) Balanced

Signal-to-noise ratio:

  • [Normal Gain] 122dB @ 1kHz, Unbalanced / 124dB @ 1kHz, Balanced
  • [High Gain] 125dB @ 1kHz, Unbalanced / 127dB @ 1kHz, Balanced

Crosstalk:

  • [Normal Gain] -138dB @ 1kHz, Unbalanced / -145dB @ 1kHz, Balanced
  • [High Gain] -138dB @ 1kHz, Unbalanced / -147dB @ 1kHz, Balanced

THD+N:

  • [Normal Gain] 0.0006% @ 1kHz, Unbalanced / 0.0005% @ 1kHz, Balanced
  • [High Gain] 0.0008% @ 1kHz, Unbalanced / 0.0006% @ 1kHz, Balanced

IMD SMPTE: 0.0002%, 800Hz 10kHz (4:1), Unbalanced / 0.0002%, 800Hz 10kHz (4:1), Balanced

Output Impedance: 3.5mm (1ohm) / 2.5mm (1.5ohm) / 4.4mm (1.5ohm)

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