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A&norma SR25

A&norma SR25
New hi-fi standard

  • Quad-Core CPU paired with the Dual Cirrus Logic CS43198
  • Native playback support for DSD256
  • Ultra-high quality playback without compromise
  • Newly designed circuitry to improve sound quality enhancements
  • Bluetooth LDAC codec to give users more options for higher quality
View full spec »
£449.00 NO STOCK
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The new hi-fi standard, A&norma SR25

Get the complete Astell&Kern experience from our most compact, affordable digital audio player yet - it has the power to keep you entertained all day long.

SR25

Uncompromised sound

Making the unique Astell&Kern experience available to as wide an audience as possible doesn’t leave room for compromise. So SR25 features native 32bit/384kHz and DSD256 playback, thanks to its outstanding Cirrus Logic CS43198 Master Hi-Fi DAC. This kind of performance is without equivalent at the price.

All day and all of the night

Despite its usefully compact dimensions, SR25 has the stamina you need for even the longest listening sessions. A playback time of up to 21 hours from a single charge is well within reach, without any compromise to the sound quality that makes Astell&Kern such a discerning choice in the first place.

Optimised options

As well as 24-bit aptX HD Bluetooth wireless playback, SR25 adds support for LDAC wireless connectivity too. Your options are increased - so you can enjoy thrilling high-resolution A&K sound quality using a huge range of wireless headphones and speakers.

Exclusive metalworking technology

Nobody else’s digital audio players perform like ours - and nobody else’s look like ours, either. That’s thanks to our incredible 5-axis machining, which processes solid aluminium billets in one uninterrupted process. So your SR25 looks and feels as good as it sounds.

The world’s music in your hand

The SR25 user interface is based on Android 9.0 - and then it’s customised to give a smooth, straightforward experience that’s unique to Astell&Kern. Integrate your favourite streaming services and internet radio stations - and then hear them at their absolute best.

DualDac AK4492ECB
Dual DAC
32bit 32bit 768kHz
bit to bit play
DSD Native DSD
QuadCore Quad-Core CPU
21 Hours 21hrs
Playback
A&norma SR25 - Gallery 3
A&norma SR25 - Gallery 2
A&norma SR25 - Gallery 1
A&norma SR25 - Gallery 0

Included in the box

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

General Specifications

Model
SR25
Body Color
Moon Silver
Body Material
Aluminum
Display
3.6inch WVGA (720 x 1,280) TFT LCD
Supported Audio Formats
WAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, MQA MQA playback
Services
(Tidal Masters), Local files, External USB, MQA-CD(ripped)
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 2.0Vrms / Balanced 4.0Vrms (Condition No Load)
DAC
Cirrus Logic CS43198 x2 (Dual DAC)
CPU
Quad-Core
Decoding
Support up to 32bit / 384kHz Bit-to-Bit Playback
Input
USB Type-C input (for PC & MAC)
Outputs
Unbalanced Out (3.5mm) / Balanced Out (2.5mm, only 4-pole supported)
Wi-Fi
802.11 b/g/n (2.4GHz)
Bluetooth
V4.2 (A2DP, AVRCP, aptXTM HD, LDAC)
Dimensions
2.5 ”(63.5 mm) [W] x 4.26 ”(108.3 mm) [H] x 0.63 ”(16.1 mm) [D]
Weight
about 6.27 oz (about 178 g)
Feature Enhancements
Firmware upgrades supported (OTA)

Audio Performance

Frequency Response
±0.014dB (Condition: 20Hz~20kHz) Unbalanced / ±0.011dB (Condition: 20Hz~20kHz) Balanced
±0.10dB (Condition: 20Hz~70kHz) Unbalanced / ±0.12dB (Condition: 20Hz~70kHz) Balanced
Signal to Noise Ratio
122dB @ 1kHz, Unbalanced / 123dB @ 1kHz, Balanced
Crosstalk
-138dB @ 1kHz, Unbalanced / -144dB @ 1kHz, Balanced
THD+N
0.0007% @ 1kHz, Unbalanced / 0.0008% @ 1kHz, Balanced
IMD SMPTE
0.0004% 800Hz 10kHz(4:1) Unbalanced / 0.0003% 800Hz 10kHz(4:1) Balanced
Output Impedance
Unbalanced Out 3.5mm (1.8ohm) / Balanced out 2.5mm (1.6ohm)

Clock source

Clock Jitter
25ps(Typ)
Reference Clock Jitter
200 Femto Seconds

Battery

Capacity
3,150mAh 3.7V Li-Polymer Battery
Continuous Playback Time
About 21 hours (Standard - MUSIC: FLAC, 16-bit/44.1kHz, Unbalance, Volume 50, EQ OFF, LCD OFF)
Charge Time
About 2.5 hours (Standard - 5V/2A Charging)

Memory

Built-in Memory
64GB [NAND]
External Memory
microSD (Max. 1TB) x1

OS

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