Astell & Kern SR25

Digital Audio Player

Unbeatable in its price range
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Rated 5 out of 5

769.00€including VAT.

The SR25 is the new model from Astell & Kern, the SR25. Like a twin, it resembles the predecessor model, the SR15. However, the internals have been completely renewed; a new operating system, 4-core CPU, display in HD resolution, USB-C interface for fast charging & data transfer, Bluetooth with LDAC, and more.

  • Dual Cirrus Logic CS43198 D/A Converter
  • 32Bit/384kHz, DSD256 (Quad-DSD) and MQA (Master Quality Authenticated)
  • 64 GB internal storage, expandable by 1 TB via microSD card
  • 3.6″ touchscreen display with 720 x 1,280 pixels
  • Streams music libraries and online services via WLAN
  • Free Android and iOS app to control with your smartphone or tablet
  • Latest Bluetooth technology
    Bluetooth v4.2 Qualcomm aptX HD and LDAC for real HiFi sound without compromises.
  • USB Audio

Delivery time:7-14 days

Test results

very good

Long battery life; good operating system; responsive CPU; excellent sound; price for what is offered.

Recommended

Detailed, open, energetic, and convincing sound; good battery life; Android 9.0 operating system.

Technical specifications

General Specifications

ModelSR25
Body ColORMoon Silver, Onyx Black
Body MaterialAluminum
Display3.6inch WVGA (720 x 1,280) TFT LCD
SuppORted Audio FORmatsWAV, FLAC, WMA, MP3, OGG, APE, AAC, ALAC, AIFF, DFF, DSF, MQA
MQA PlaybackServices (Tidal Masters), Local files, External USB, MQA-CD (ripped)
Sample RatePCM: 8kHz ~ 384kHz (8/16/24/32 bits per Sample) / DSD Native: DSD64 (1 bit 2.8MHz), Stereo / DSD128 (1 bit 5.6MHz), Stereo / DSD256 (1 bit 11.2MHz), Stereo
Output LevelUnbalanced 2.0Vrms / Balanced 4.0Vrms (Condition No Load)
DACCirrus Logic CS43198 x2 (Dual DAC)
CPUQuad CORe
DecodingSuppORt up to 32bit / 384kHz Bit-to-Bit Playback
InputUSB Type-C Input (for PC & MAC)
OutputsUnbalanced Out (3.5mm) / Balanced Out (2.5mm, only 4-pole Supported)
Wi-Fi802.11 b/g/n (2.4GHz)
BluetoothV4.2 (A2DP, AVRCP, aptXTM HD, LDAC)
Dimensions2.5” (63.5 mm) [W] x 4.26” (108.3 mm) [H] x 0.63” (16.1 mm) [D]
Weightabout 6.27 oz (about 178 g)
Feature EnhancementsFirmware 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 Ratio122dB @ 1kHz, Unbalanced / 123dB @ 1kHz, Balanced
CrOSstalk-138dB @ 1kHz, Unbalanced / -144dB @ 1kHz, Balanced
THD+ N0.0007% @ 1kHz, Unbalanced / 0.0008% @ 1kHz, Balanced
IMD SMPTE0.0004% 800Hz 10kHz (4:1) Unbalanced / 0.0003% 800Hz 10kHz (4:1) Balanced
Output ImpedanceUnbalanced Out 3.5mm (1.8ohm) / Balanced out 2.5mm (1.6ohm)

Clock Source

Clock Jitter25ps (Typ)
Reference Clock Jitter200 Femto Seconds

Battery

Capacity3,150mAh 3.7V Li-Polymer Battery
Continuous Playback TimeAbout 21 hours (Standard - MUSIC: FLAC, 16-bit/44.1kHz, Unbalanced, Volume 50, EQ OFF, LCD OFF)
Charge TimerAbout 2.5 hours (Standard - 5V/2A Charging)

MemORy

Built-in Memory64GB [NAND]
External MemORymicrOSD (Max. 1TB) x1

OS

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

Description

Additional Information

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