Astell & Kern SR25 MKII Mobile Hi-Res. Player, silver

Astell & Kern SR25 MKII Mobile Hi-Res. Player, silver

A powerhouse for your pocket

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

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

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

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

Performance mode for ultra-high-resolution sound

Not all DACs sound the same.

The SR25 MKII offers improved performance in all areas compared to the SR25, including bass response, dynamic range, soundstage, imaging and more.

The SR25 MKII utilizes Astell&Kern's latest audio design technology for clear and natural high-resolution sound with more clearly defined upper and lower ranges, providing the listener with a deeper, more rounded sound.

Bit-to-bit playback is possible on models up to SR25 MKII at 32 bit and 384 kHz. Native DSD audio is available up to 11.2 MHz, ensuring uncompressed sound quality that remains true to the artist's original intent, in high resolution and with minimal distortion.

Enjoy your music even more with seamless playback performance that supports native DSD256 up to 32bit/384kHz.

32-bit bit-to-bit playback with the SR25 MKII

Multiple output options

The SR25 MKII supports a balanced 4.4mm output. 2.5mm, 3.5mm and 4.4mm output options allow you to connect an even wider variety of devices.
The balanced 4.4mm output provides improved dynamic range and bass response, supporting a wide soundstage, providing clear imaging and capturing subtle details of the audio source.

Enjoy your music without worrying about adapters.

Excellent uninterrupted playback time

Don't worry about battery life.
Thanks to its optimized, energy-efficient circuitry, the SR25 MKII can play for up to 20 hours continuously on a full charge.
Enjoy your personal musical performance anytime, anywhere - thanks to the SR25 MKII's long playback time and portability.

* Music in FLAC format, 16 bit, 44.1 kHz, unbalanced, volume at 50, EQ off, LCD off
* Playback time may vary depending on user environment.

Wireless Hi-Fi sound via BT Sink

The newly introduced BT Sink feature connects the SR25 MKII to an external device via Bluetooth, similar to connecting a smartphone to 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.

ReplayGain automatically and evenly adjusts the playback volume

ReplayGain, which adjusts sound sources with different volumes to an identical level, was introduced. Now enjoy your own playlists seamlessly with the
ReplayGain function of the SR25 MKII.

•     ReplayGain supports audio sources up to 24bit/192 kHz.

AK File Drop for wireless transfers

The SR25 MKII's new AK File Drop feature makes transferring files easier and more convenient. AK File Drop allows you to transfer files wirelessly via a PC, smartphone or FTP program located on the same network. Managing music files is now possible with a wireless, wireless solution.

DESIGN

The A&norma SR25 MKII adopts the general design identity of the A&norma SR25 model and emphasizes 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 within the case. The pattern on the side is intended to draw attention to the volume wheel while giving an impression of sound.

Specifications

• Body color Mercury D. Sliver
• Housing material aluminum
• Display 3.6-inch 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 (no-load condition)
• CPU quad core
• DAC Cirrus Logic CS43198 x2 (double DAC)
• Decoding support up to 32bit/384kHz bit-to-bit playback
• Input USB Type-C input (for charging PC & MAC)
• Outputs Unbalanced output (3.5 mm), balanced output (2.5 mm, 4-pin supported only | 4.4 mm, 5-pin supported only)
• Wi-Fi 802.11 b/g/n (2.4GHz)
• Bluetooth V4.2 (A2DP, AVRCP, Qualcomm®aptXTM HD, LDAC)
• Dimensions 2.5" (63.5mm) [W] x 4.26" (108.3mm) [H] x 0.63" (16.1mm) [D]
• Weight approx. 178 g (6.27 oz)
• Functional improvements Firmware upgrades supported (OTA)
• Operating temperature 0℃ ~ + 40℃ (32℉ ~ 104℉)

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 / 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 output 3.5 mm (1.2 ohms) / Balanced output 2.5 mm (1.8 ohms), 4.4 mm (1.7 ohms)

Clock Source

• Clock jitter 25ps(type)
• Reference clock jitter 70ps

Battery

• Capacity 3,150mAh 3.7V Li-polymer battery
• Continuous playback time approx. 20 hours (standard: FLAC, 16bit, 44.1kHz, unbalanced, Vol.50, EQ off, LCD off)
• Charging time approx. 2.5 hours (5V 2A general charging)

Memory

• Built-in memory 64GB [NAND]
• External memory microSD (max. 1TB) x1

O.S

• Supported operating systems Windows 8, 10 (32/64bit), MAC OS X 10.7 and higher