Astell & Kern A&norma SR25 Portable High-Resolution Music Player (Moon Silver)

BH #ASSR25S • MFR #3PPS217C-CMSIN1
Astell & Kern A&norma SR25 Portable High-Resolution Music Player (Moon Silver)
Key Features
  • Cirrus Logic CS43198 Dual DAC
  • 64GB of Built-In Storage & microSD Slot
  • 3.6" 720p HD Display
  • Native DSD256, 32-Bit/384 kHz Playback
Designed to reproduce audio as the creator's intended, the A&norma SR25 Portable High-Resolution Music Player from Astell&Kern delivers high-fidelity acoustics you can take with you. Wrapped inside a stylish aluminum body is a host of technological advances in audio engineering. You get a quad-core CPU that's paired with dual Cirrus Logic CS43198 DACs that support 32-bit/384 kHz bit-to-bit playback and native DSD256. With up to 21 hours of playback, you can enjoy rich and dynamic sound all day long.
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$699.00
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Astell & Kern SR25 Overview

  • 1Description
  • 2Performance Mode
  • 3Zero Noise
  • 4Open App Service
  • 5MQA Support
  • 6Additional Features

Designed to reproduce audio as the creator's intended, the A&norma SR25 Portable High-Resolution Music Player from Astell&Kern delivers high-fidelity acoustics you can take with you. Wrapped inside a stylish aluminum body is a host of technological advances in audio engineering. You get a quad-core CPU that's paired with dual Cirrus Logic CS43198 DACs that support 32-bit/384 kHz bit-to-bit playback and native DSD256. With up to 21 hours of playback, you can enjoy rich and dynamic sound all day long.

This kind of audio quality is provided regardless of how you listen, so with the SR25 you don't have to compromise when using wireless headphones or speakers. Aside from 3.5mm unbalanced and 2.5mm balanced headphone outputs, it supports 24-bit playback via aptX HD Bluetooth, as well as support for LDAC. All of this technology is at your fingertips and can be controlled via the 3.6" 720p TFT LCD and convenient external analog controls. For a smooth, user-friendly experience, Astell&Kern runs the SR25 on a customized Android 9.0 operating system.

Performance Mode

In Performance Mode, the memory mode of the system is optimized according to the data size of your source material. So when very high resolution audio is played, that large amount of data can be processed to help produce near perfect sound quality, letting you enjoy even the smallest detail of the recording.

Zero Noise

Astell&Kern developed a PCB design to allow for super-high-resolution sound without delay. They've also designed audio patterns and power circuits that result in an ultra-low noise filter for zero noise during playback.

Open App Service

Astell&Kern's Open App Service allows you to install specific streaming apps to the SR25's built-in storage. Simply download the APKs that you want to install, and copy them into the Open Service folder of the device and install.

MQA Support

MQA stands for Master Quality Authenticated, and is a technology that is designed to deliver the sound of the original master recording. MQA files are fully authenticated and small enough to either stream or download to your device.

Additional Features

64GB of built-in storage with a microSD slot for additional storage (up to 1TB)
3.5mm (unbalanced) and 2.5mm (balanced) headphone outputs
Support for 2.4 GHz Wi-Fi 4 (802.11n)
USB Type-C computer connection
OTA firmware updating
UPC: 821566017703

Astell & Kern SR25 Specs

Audio
DAC2 x Cirrus Logic CS43198 32-Bit
Audio ResolutionPCM: 8 ~ 384 kHz / 32-Bit
DSDNative: 2.8 MHz / 1-Bit
DSD128: 5.6 MHz / 1-Bit
DSD256: 11.2 MHz / 1-Bit
Frequency Response20 Hz to 20 kHz ±0.011 dB (Balanced Headphone Out)
20 Hz to 20 kHz ±0.014 dB (Unbalanced Headphone Out)
20 Hz to 70 kHz ±0.12 dB (Balanced Headphone Out)
20 Hz to 70 kHz ±0.1 dB (Unbalanced Headphone Out)
Impedance1.8 Ohms (Unbalanced Headphone Out)
1.6 Ohms (Balanced Headphone Out)
Volume ControlAnalog
THD + N0.0007% at 1 kHz (Unbalanced Headphone Out)
0.0008% at 1 kHz (Balanced Headphone Out)
Maximum Output Voltage2 Vrms (Unbalanced 3.5 mm)
4 Vrms (Balanced 2.5 mm)
Signal to Noise Ratio122 dB (Unbalanced Headphone Out)
123 dB (Balanced Headphone Out)
Clock Jitter25 ps
Crosstalk-138 dB at 1 kHz (Unbalanced Headphone Out, )
-144 dB at 1 kHz (Balanced Headphone Out, )
Performance
CPU Quad-Core
Operating SystemAndroid 9.0
Internal Storage64 GB
Media/Memory Card SlotSingle Slot: microSD/microSDHC/microSDXC [1 TB Maximum]
Display3.6" LCD (1280 x 720 Resolution)
Operation MethodPhysical Buttons, Touchscreen, Volume Wheel
Media Support
Video RecordingNo
Video PlaybackNo
Formats SupportedAudio: WAV, FLAC, WMA, MP3, OGG, APE, ALAC, AIFF, DFF, DSF, and MQA
Connectivity
WirelessBluetooth 4.2
Wi-Fi 4 (802.11n)
Bluetooth CodecsaptX, LDAC
Connections1 x 1/8" / 3.5 mm Headphone Output
1 x 2.5 mm Balanced Headphone Output
1 x USB Type-C USB 3.0 Input
Built-In MicNo
Power
Battery1 x Built-In Rechargeable Lithium-Polymer Battery 3150 mAh
Providing up to 21 Hours per Charge for Audio Playback (3.5 mm)
Charging TimeFull Charge: 2.5 Hours
General
System RequirementsOperating System
Windows 7, 8, 10
Mac OS X 10.7
Dimensions (W x H x D)2.5 x 4.3 x 0.6" / 6.3 x 10.9 x 1.5 cm
Weight6.28 oz / 178 g
Packaging Info
Package Weight0.85 lb
Box Dimensions (LxWxH)5.6 x 4 x 1.1"
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