at Payment Page
Join Club Audiophile to begin your pursuit of great sound. Earn points and save on every purchase.
Designed in
Korea
Bluetooth with
LDAC & aptX HD
2.5mm
Balanced Output
Upto 4.0Vrms
Power Output
Cirrus Logic CS43198
Dual DAC Chip
Upto 1TB
of Storage
Battery Capacity of
3150mAh
Headphone Zone Certified Demo Headphones
Our careful selection of demo headphones gives you the experience of pre-burned in headphones - at drop dead prices. We do this sale every year to clear up our existing demos and to make way for new units instead. These demo headphones have been used at our Experience Studio in Mumbai. The pictures above depict the condition of the product and also indicate the accessories available with the headphone. For any specific questions about the condition please get in touch with us! While the product itself is fully tested by our Headphone Gurus and the outer packaging may have suffered some damage.
GET THE BEST DEAL
You may or may not get the original packaging or some accessories may be missing & because of the fact that they've been extensively used as a demo at the Experience Studio, we give a good discount compared to a new gear.
UNCHANGED REPLACEMENT POLICY
Received a defective Demo unit? Return it under our 7 Day Replacement Guarantee Policy.
P.S. If you do not like your gear, unfortunately we will not be able to accept the return.
PRE-BURNED IN
Demo headphones save you the time of burning in new headphones. Typically, brand new headphones take up to weeks to fully break in and sound as good as they should. With demo headphones, you get to enjoy the best sound out of the box.
UNBIASED CUSTOMER SERVICE
We have the same Headphone Zone customer support experience for Demo Units or any products.
CONSIDER IT VINTAGE
Vintage products have a certain charm that cannot be put into words. Think of old, discontinued demo headphones as vintage. They have a story; they have, how-to-say, character.
PROFESSIONALLY INSPECTED
A thorough inspection means you receive a 100% working headphone with no sound output issues.
| BOX CONTENTS | 1. Astell&Kern A&Norma SR25 Digital Audio Player |
| 2. USB Type-C Cable X 1 | |
| 3. Blue leather case | |
| 4. Quick Start Guide X 1 |
| WARRANTY | NA |
THE LATEST TECHNOLOGY FOR HIGH-QUALITY SOUND
In the quest to get closer to the sound which the artist intended, Astell&Kern has developed the latest SR25 which is an upgrade to their previous model SR15. The latest SR25 features a Quad-core CPU along with the debutant Dual Cirrus Logic CS43198 Master Hi-Fi level DAC. It also extends native playback support for DSD256.
ALL-NEW PERFORMANCE MODE OFFERING ULTRA HIGH-RESOLUTION SOUND
The SR25 debuts with the native DSD256 and 32bit/384kHz audio which has never been used in a standard Astell&Kern player before, allowing it to deliver unrivalled performance. It has a new performance mode that optimizes the performance depending on the data size of the source being played. This results in the production of ultra-high-resolution audio without any break-up.
LATEST CIRCUIT DESIGN FOR UNCOMPROMISED SOUND QUALITY
The SR25 employs Astell&Kern's uniquely developed PCB design which helps in better processing the high-speed signals and delivering lag-free high-res sound without reducing the audion path lengths. To add more efficiency, the new circuit design and audio patterns implement distortion-free signal transmission and noise reduction to each channel. Furthermore, the laser ground extension tech delivers the best sound without any distortion. All thanks to the ultra-low noise filter that helps deliver a noise-free flawless sound.
HIGH-QUALITY DESIGN & GORGEOUS METAL CHASSIS
The design of the SR25 is the result of Astell&Kern's Precise Metalworking Technology. The aluminum body is designed to deliver high-grade sound quality by suppressing noise. It features rectangular surfaces with added angles. The perfect cuts are similar to the reflections of light and it makes space depths around volume wheel which further highlights the reflections. It's built to be efficiently used with one hand. Additionally, the front screen angle adds more space around it to provide a better in-hand grip.
ENJOY UNCOMPROMISING SOUND WIRELESSLY THROUGHOUT THE DAY
The SR25 delivers almost 21 hours of playtime which is two times the battery life of its predecessor. It supports aptX HD Bluetooth codec for 24-bit music playback along with the advanced LDAC codec for transferring high-resolution audio wirelessly. So pair the SR25 with Bluetooth headphones and speakers and be rest assured of the audio quality.
STREAM YOUR FAVOURITE SONGS ON YOUR PREFERRED SERVICE & MQA
The firmware of the SR25 is based on the Android 9.0 OS, opening your door to music streaming applications. Astell&Kern further optimizes the OS for a fluid and efficient music listening experience. Stream your favourite songs over .apk apps like Tidal, Spotify, Amazon Music, Apple Music and more with the Open APP Service. The MQA (Master Quality Authenticated) allows you to play MQA audio files and while offering a sound that matched to the original master recording.
| MODEL | SR25 |
| BODY COLOR | Moon Silver |
| BODY MATERIAL | Aluminum |
| DISPLAY | 3.6inch WVGA (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 2.0Vrms / Balanced 4.0Vrms (Condition No Load) |
| DAC | Cirrus Logic CS43198 x2 (Dual DAC) |
| 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) |
| WIFI | 802.11 b/g/n (2.4GHz) |
| MQA PLAYBACK | Services(Tidal Masters), Local files, External USB, MQA-CD(ripped) |
| CPU | Quad-Core |
| BLUETOOTH | V4.2 (A2DP, AVRCP, 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 ENHANCEMENT | Firmware upgrades supported (OTA) |
| 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 SAMPTE | 0.0004% 800Hz 10kHz(4:1) Unbalanced / 0.0003% 800Hz 10kHz(4:1) Balanced |
| OUTPUT IMEDANCE | Unbalanced Out 3.5mm (1.8ohm) / Balanced out 2.5mm (1.6ohm) |
| CLOCK JITTER | 25ps(Typ) |
| REFRENCE CLOCK JITTER | 200 Femto Seconds |
| CAPACITY | 3,150mAh 3.7V Li-Polymer Battery |
| CONTINUOUS PLAYBACK | 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) |
| 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 |
| BOX CONTENTS | 1. Astell&Kern A&Norma SR25 Digital Audio Player |
| 2. USB Type-C Cable X 1 | |
| 3. Blue leather case | |
| 4. Quick Start Guide X 1 |
The Ultimate Hi-Fi Audio System
The word Astell means Stars in Latin while the word Kern means Centre and together
Astell&Kern means the centre of music. Astell&Kern products are the perfect pick for Hi-Fi audio
aficionados. Due to the advancement in recording technology, music can be recorded digitally while sounding
as true as a live performance. But most of the time, these high-quality recordings are heard in inferior
audio formats such as MP3 which compromises with the sound quality. Additionally, the soundstage aspect of
the sound is completely lost in the MP3 formats. Therefore Astell&Kern came into existence to address
this issue to revive the amazing sound quality for musicians and audio professionals.
The brand
has core values such as: High-Resolution studio quality sound in
audio device, Audio quality without
compromise, Design & Engineering Excellence, Craftsmanship & High Quality Materials, State of the
art Technology and Innovation at every release.
 |
 |
 |
 |
Specialist Hi-Fi Brand in Digital Audio Player Market
Astell&Kern dedicatedly works on providing naturalistic sound without any kind of distortion so that listeners can hear even the minutest details of a song which they would have otherwise missed. Furthermore, Astell&Kern prides itself on using only the absolute best DAC chips from AKM, ESS or Cirrus Logic. Each DAP is unique and crafted to the highest quality standards.
A Popular Choice for Hi-Res Audio
AstellKern believes in playing Hi-Res music matching the quality of the recording.
This ability to deliver a sound which is close to the live performance is the highlight of Astell&Kern.
This standard of sound quality has been used in audio exhibitions around the world and is appreciated by
audio lovers across the world including the USA, China, Japan, UK, France among others.
All
Astell&Kern DAPs employ high quality materials from Aluminum, Stainless Steel, Copper, and Brass. Made
in South Korea, all their DAPs provide an overwhelming Power Output based on BAL 2Vrms~12Vrms.
Some apps such as Spotify and Tidal support offline mode. For full instructions, please see the instructions of the corresponding application. Also, some apps allow for you to choose the location of where the files are stored. To save storage space on the device, you may choose files to be saved to the the external memory (microSD card) tin the settings of the app.
Note: You will not be able to access these files outside of the application, they will be hidden.
2. Once all files are downloaded as accessible for offline mode, turn off WiFi on the player.
3. Access your offline content in the Tidal app and press play.
Note: You will still be able to directly access your currently playing content through the Notification Bar while the app is running.
- Caution -
The source of apps listed is unknown and not provided by Astell&Kern. Please be aware that if any app is installed, the device may be damaged and personal data compromised. If you install an app from an unknown source, despite the warning, Astell&Kern is not responsible for any damages to the device and data resulting from the app's installation, and downloading and installing such apps may limit the scope of after-sales services provided by Astell&Kern.
Installation of any app is under the discretion of the user.