FiiO KA15 Headphone Amplifier Portable DAC with 4.4mm and 3.5mm Headphones Outputs Support PCM768K DSD256 for Android/iOS/Mac/Windows (Color: Midnight Black) The KA15 features a high-end built-in DSP that supports ten bands of high-precision lossless PEQ adjustment. Enhanced by advanced algorithms, it ensures efficient and smooth PEQ calculations. With FiiO's self-developed tuning algorithm and app, as well as a web interface, users can not only simulate or correct their headphones' frequency response curves but also export, import, share, and save EQ settings. Whether using the official recommended tuning or sharing with fellow enthusiasts online, you can easily enjoy custom sound adjustments. The KA15 is equipped with a high-performance, low-power processor and features professional-grade, high-precision chips. It innovatively incorporates real-time voltage and current monitoring to achieve dynamic power consumption regulation. By recognizing the device's playback status, it intelligently adjusts overall power consumption, allowing your phone to run with minimal load. When you set up night-time playback, the KA15 will enter an ultra-low power sleep mode after playback stops, so you won’t have to worry about your phone’s battery running low by morning. The KA15 features a 0.96-inch IPS true-color LCD display, making local settings more intuitive and user-friendly. It also boasts a new retro dynamic UI that blends classic aesthetics with modern technology, simulating the motion of a tape, which highlights the KA15’s unique character. By activating D.Mode, the KA15 unleashes powerful drive capability, with balanced output power soaring to 560mW + 560mW per channel—an astonishing 207% increase compared to the KA5. This enhancement allows it to effortlessly drive both low-impedance and high-impedance headphones. The KA15 features a high-performance USB bridge and is equipped with dual flagship DACs, the CS43198, along with dual high-performance op-amps, the SGM8262. This expertly tuned golden combination is packed into a compact, thumb-sized body, surpassing your expectations for performance in a device with the same chip. Additionally, the KA15 supports audio specifications up to 768kHz/32-bit and DSD256, easily handling a wide range of lossless audio formats available on the market.