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A&norma SR25 // Portable High-Resolution Audio Player

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Product Description

The A&norma SR25 is the latest answer to the never-ending question of "How do we get closer to the original sound the artist intended?" The SR25 supports native DSD256 and 32bit/384kHz audio for the first time in an Astell&Kern standard product and boasts performance that cannot be compared with other competitors' products.

The SR25, which is smaller than other players, has been developed to achieve stable, ultra-high resolution sound. It uses the new Performance Mode to adjust and optimize the system in order to produce near perfect sound quality when playing back high resolution audio.

With the SR25, the Astell&Kern team developed a completely different PCB design to process the high speed signals where required, resulting in audio path lengths that are the same, allowing for super-high resolution sound without any delay. The newly designed audio patterns and power circuits for distortion-free signal transmission and noise rejection are applied to each channel.

The aluminum body on the SR25 provides maximum sound quality, while suppressing noise as much as possible. In order to produce this unique style Astell&Kern is famous for, 5-axis machining is performed instead of traditional 3-axis machining used in general machining. The use of laser ground extension technology gives you the best sound possible, without interference or distortion.

Astell&Kern's vibration-free processing machines are the same ones used by expensive Swiss luxury watch manufacturers. This is reflected in the crafting of the volume wheel which is processed precisely like the crown of a luxury watch for the best operating feel.

The SR25 firmware is based on Android 9.0, which adds a number of behind the scene features and upgrades to provide more stable operation over previous versions of Android OS. The use of Android 9.0 ensures the most popular music streaming apps installed via Open APP will be fully compatible with your Astell&Kern player now and with future app updates.

Product Details
  • ColorsMoon Silver
  • Materials
  • Measurements
    4.26"L x 2.5"W x 0.63”D
  • OriginSouth Korea

— Warranty: Manufacturer's 1 Year Parts + Labor
— Portable Audio Player
— 3.6" LCD Screen
— Up To 21 Hours Of Continuous Playback
— Quad-Core CPU & Dual Cirrus Logic CS43198 Master Hi-Fi level DAC
— Native Playback Support For DSD256
— Bluetooth LDAC Codec For Higher Quality Wireless Sound
— Weight: 6.27 oz

Technical Details
— Display: 3.6" WVGA (720 x 1280) TFT LCD
— Battery Capacity: 3,150mAh 3.7V Li-Polymer Battery
— Continuous Playback Time: About 21 hours (Standard - MUSIC: FLAC, 16-bit/44.1kHz, Unbalance, Volume 50, EQ OFF, LCD OFF)
— Charge Time: About 2.5 hours (Standard - 5V/2A Charging)
— Clock Jitter: 25ps(Typ)
— Reference Clock Jitter: 200 Femtoseconds
— Built-in Memory: 64GB [NAND]
— External Memory: microSD (Max. 1TB) x1
— Supported OS: Windows 7,8,10 (32/64bit), MAC OS X 10.7 and up
— 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)
— 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 2.0Vrms / Balanced 4.0Vrms (Condition No Load)
— DAC: Cirrus Logic CS43198 x2 (Dual DAC)
— CPU: Quad-Core
— 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)
— Wi-Fi: 802.11 b/g/n (2.4GHz)
— Bluetooth: V4.2 (A2DP, AVRCP, aptXTM HD, LDAC)
— Feature Enhancements: Firmware 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 Ratio - 122dB @ 1kHz, Unbalanced / 123dB @ 1kHz, Balanced
— Crosstalk - -138dB @ 1kHz, Unbalanced / -144dB @ 1kHz, Balanced
— THD+N - 0.0007% @ 1kHz, Unbalanced / 0.0008% @ 1kHz, Balanced
— IMD SMPTE - 0.0004% 800Hz 10kHz(4:1) Unbalanced / 0.0003% 800Hz 10kHz(4:1) Balanced
— Output Impedance - Unbalanced Out 3.5mm (1.8ohm) / Balanced out 2.5mm (1.6ohm)

Does this work like an iPod?

The A&norma SR25 is capable of handling a larger variety of high-resolution file formats and processes them bit-to-bit for full resolution playback without compromise, downsampling, or colorization. The SR25 offers easy loading of your music by drag and drop file transfer as well as side loading of approved music streaming services such as Tidal, Amazon Music, Apple Music, Qobuz, Spotify, and many more! The hardware used for the SR25 is thoughtfully selected, dedicated and optimized to achieve an experience closest to the original recording the artist intended.

Shipping Information
*Continental US only. Surcharges apply to HI, AK and Canada
  • Shipping Availability
    United States
  • Shipping Policy
    FREE Standard Shipping
  • Ship In
    1-2 weeks
  • Return Policy
    Final sale, not eligible for return or cancellation

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