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A&norma SR25 MKII

The Pocket Powerhouse

Delivers superior sound through Astell&Kern’s latest advanced audio design technology.
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.
Features 2.5mm, 3.5mm and 4.4mm output jacks to connect a wider variety of headphones.
Equipped with a Quad-Core processor paired with a top-quality Dual Cirrus Logic CS43198 DAC for balanced and ultra-detailed sound.
Boasts the latest high-definition 24-bit Bluetooth wireless codecs: LDAC and aptX™ HD.
Replay Gain function uniformly adjusts volume playback from sound sources up to 24-bit/192 kHz.

£699.00

Sold out

The Pocket Powerhouse

Introducing A&norma SR25 MKII - the second-generation model of our award-winning entry-level player. Taking the much-loved original to the next level, this latest player improves on the audio performance, adds new features, such as a balanced 4.4mm headphone jack, and tweaks 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.

Superior sound

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. At the helm is a Quad-Core processor paired with a top-quality Dual Cirrus Logic CS43198 DAC

Hi-res chops

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 24-bit Bluetooth wireless codecs: LDAC and aptX™ HD.

Seamless playback volume

The SR25 MKII 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.

The right balance

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.

Boosted connectivity

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. 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.

"Any negatives? Really, no…for this money, the A&norma SR25 MKII cannot be beaten sonically."

Techradar, 5 Stars, Editor's Choice Award

"The quality almost glows. As good as it gets for the money."

Hi-Fi Choice, 5 Stars, Editor's Choice Award, June 2022 issue

Included in the box

1x Astell&Kern A&norma SR25 MKII player
1x USB-C to USB-A cable (1 metre)
3x screen protectors
1x Quick start guide

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

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

MD 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

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