The SR25 is the second model in Astell&Kern's A&norma range, a high-end DAP that fully embraces the brand's philosophy and technology, now available to the general public. The powerful player is based on a fast Quad Core processor and two Cirrus Logic CS43198 DAC chips. The SR25 supports high-resolution files such as DSD256 or MQA.
In addition, the A&norma SR25 benefits from both classic asymmetrical and balanced connectivity, as well as Bluetooth and WiFi wireless connectivity.
The essence of Astell&Kern's philosophy that sound quality is never compromised is exemplified with this SR25, capable of expressing every musical detail through bit-perfect playback as only Astell&Kern knows how.
Performance Mode for ultra high-resolution sound
The SR25 supports DSD256 Native as well as PCM streams up to 32bit 384kHz while delivering excellent music performance. The Performance Mode allows the SR25 to optimize and assign a memory mode automatically based on the size of the data stream. This means that as the resolution of the source file increases, a large amount of data needs to be processed quickly. The Performance mode automatically makes these adjustments and optimizations for near-perfect sound quality.
Optimal circuitry for stunning sound reproduction quality
High-quality playback of high-resolution audio streams requires the use of a powerful processor and fast memory, as well as audio circuitry suitable for high-speed signal processing. The SR25's circuitry is therefore optimized to process these signals extremely quickly and cancel any form of delay.
In addition, newly designed audio models and power supply circuits for distortion-free signal transmission and noise rejection are applied to each channel.
The result is ultra-low noise filtering for a smooth, rich and accurate listening experience.
A musical journey for the whole day
If the stability and efficiency of the power supply are not properly taken into account, the difference in input and output voltage can become large and, when the output current is large, the output voltage can become unstable. This results in excessive noise and thus a degradation of sound quality.
One of the challenges in designing the SR25 was to offer the longest possible playback time while maintaining excellent sound quality. As a result, the SR25 incorporates not only efficient components, but also circuitry optimized to get the best performance from these components. The result is up to 24 hours of continuous playback time, with no deterioration in sound reproduction.
Exclusive Astell&Kern metalworking technology
The SR25 has a beautiful and robust aluminum frame, precisely machined on 5 axes, giving it an original and modern design. The high-precision machining machines used by Astell&Kern are the same as those used by the Swiss luxury watchmaking industry. More than just aesthetics, the SR15's chassis allows maximum suppression of interference and therefore reduces noise and distortion.
Latest system optimizations for a better user experience
The SR25's firmware is based on Android 9.0, offering many features and great stability. It also ensures that you can find most popular streaming applications such as Deezer, Spotify, Tidal, Qobuz, Apple Music, Amazon Music... Via the Open APP service, it is possible to install an APK streaming application on the SR25, simply by copying the desired APK to the Open Service folder. The installation is then done simply from the device menu. This way, you can take advantage of your favorite streaming service subscriptions. This version of Android is of course customized by Astell&Kern to offer an optimized, intuitive and pleasant experience.