Astell & Kern SR25 MKII

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 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

• General Specifications

  Product Name	SR25 MKII
  Model	PPS22
  Body Material	Aluminum
  Display	3.6inch 720x1280 touch display
  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)
  Sampling 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
  CPU	Quad-core
  DAC	CIRRUS LOGIC CS43198 x2 (Dual DAC)
  Output Level	Unbalanced 2.0Vrms / Balanced 4.0Vrms (Condition No Load)
  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 / 4.4mm, 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 6.27oz (178g)
  Feature Enhancements	Firmware update supported (OTA)
  SAR	Body 10g SAR (W/Kg) _ WLAN 2.4Ghz : 0.173

  Audio Specifications

  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
  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
  IMD SMPTE	0.0004% 800Hz 10kHz(4:1) Unbalanced /0.0003% 800Hz 10kHz(4:1) Balanced
  Output Impedance	3.5mm (1.2ohm), 2.5mm (1.8ohm), 4.4mm (1.7ohm)
  Clock Jitter	25ps (Typ)
  Reference Clock Jitter	70ps

  Memory

  Built-in Memory  64GB [NAND]

  External Memory  microSD (Max. 1TB) x1