Astell & Kern SR25 MKII hi-res portable music player

True to the core values of Astell&Kern, high fidelity sound lies at the heart of the SR25 MKII, delivering exceptional audio performance to a diverse range of music lovers. The most distinctive feature of the Astell&Kern A&norma product line is its compact form factor. However, the SR25 MKII offers more detailed sound than its predecessor, allowing the clear expression of each and every instrument and vocal note.

The SR25 MKII offers more versatile connectivity options with the addition of a 4.4mm balanced output for the first time in an A&norma player, LDAC, as well as Qualcomm® aptX™ HD, which support and deliver true audiophile sound quality.

The SR25 MKII keeps everything we love about the SR25 and adds new design features. It will produce the best sound quality anywhere, anytime.

• The SR25 MKII is a true mass premium product
• Improved audio quality compared to the SR25
• Versatile connectivity, with addition of 4.4mm balanced output support
• Energy-efficient design resulting in 20 hours of continuous playback
• Supports two-way Bluetooth and high-definition codecs (Qualcomm® aptX™ HD, LDAC)
• ReplayGain automatically maintains constant volume

Multiple Output Options

The SR25 MKII supports 4.4mm balanced output. With 2.5mm, 3.5mm and 4.4mm output options, you can connect an even wider variety of devices.

The 4.4mm balanced output provides improved dynamic range and bass response, supports a wide soundstage, offers clear imaging, and captures subtle details in the audio source.

Enjoy your music without worrying about adaptors.

Excellent Continuous Playback Time

No need to worry about battery life.
The SR25 MKII can play continuously for 20 hours with just one full charge, thanks to its optimized, energy-efficient circuitry.
Enjoy your own personal musical performance anytime, anywhere with the SR25 MKII’s extended playback time and its portability.

Wireless Hi-Fi Sound Through BT Sink

The newly introduced BT Sink function connects the SR25 MKII to an external device via Bluetooth,
similar to connecting a smartphone with a BT speaker.
Music from an external device, such as a smartphone can now be played back in high-quality on the SR25 MKII using the BT Sink function.

DESIGN

The A&norma SR25 MKII inherits the overall design identity of the A&norma SR25 model, highlighting the rhythmic freedom of music through the harmonious combination of design elements.

The top and bottom edges of the bezel are angled, giving the impression of a smaller rectangle floating freely inside the chassis. The pattern on the side is designed to draw attention to the volume wheel whilst conveying an impression of sound.

Specifications

• Model 

  SR25 MKII

• Body Color 

  Mercury D. Sliver

• Body Material 

  Aluminum

• Display 

  3.6inch HD (720 x 1,280) TFT LCD

• 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 

  Cirrus 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 | 4.4mm, only 5-pole supported)

• Wi-Fi 

  802.11 b/g/n (2.4GHz)

• Bluetooth 

  V4.2 (A2DP, AVRCP, Qualcomm®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)

• Operating Temperature 

  0℃ ~ + 40℃ (32℉~ 104℉

• 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 / 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), 4.4.mm (1.7ohm)

• Built-in Memory 

  64GB [NAND]

• External Memory 

  microSD (Max. 1TB) x1