The SA700 is an evolution of technology and design that deliver the ultimate sound to Astell&Kern original design and sensibility. Astell&Kern took the original design of AK120 and redesigned it into a simple, but refined form. With the latest technology, the deeper and stronger sound of the SA700 delivers new experiences and values not found in other products. The SA700 uses stainless steel, which is corrosion-resistant and durable, for maximum material strength and beauty. Since it takes a lot of time, skill and cost to process the material, it is often only used for expensive products. The SA700 uses stainless steel because it provides the perfect sound. First DAP Using AKM AK4492ECB DAC The SA700 is the first DAP to uses AK4492ECB Dual DAC to give a new sound signature. AKM's AK4492ECB is a DAC that aims to achieve the best performance in the industry by utilizing the technology obtained by developing AK4497EQ. It has lower power consumption and similar audio performance compared to AK4497EQ, making it the best DAC for a portable DAP. Only Astell&Kern's Sound Technology know-how has made the DAC's performance even more perfect. Now you can enjoy premium sound close to the original performance with the SA700 and the AK4492ECB. Deliver the perfect original sound SA700 offers the optimal condition to deliver perfect original sound and is capable of bit-to-bit playback up to 32bit 384kHz and native DSD playback up to 11.2MHz, delivering detailed, distortion-free sound just as the artist intended. Intuitive LED Indicator The LEDs around the volume wheel are not just visual effects but provide the listener information including volume and status of the currently playing song. Different colours are displayed depending on the bit depth of the song being played, and 150 levels of red saturation are displayed to reflect the current player volume. New GUI where the past and the present coexist SA700 maintains the convenience of Astell&Kern's UI combined with a new GUI that reminds users of our 1st generation players. You can combine Astell&Kern's past and present through the GUI which is reinterpreted by using Astell&Kern's various colour identities. Using Open APP Service The Open APP Service enables the user to install specific APK music streaming apps to the device. Copy the desired APK into the Open Service folder of the product and install the relevant App in the Menu-Service of the product. MQA Astell&Kern SA700 includes MQA technology, which enables you to playback MQA audio files and streams, delivering the sound of the original master recording.