Excellent AK4499EX DAC chip & AK4191EQ Delta-Sigma Modulator H7 is the first Shanling audio design built around the new generation of AKM's flagship DAC system. The Shanling H7 combines the AK4191EQ Delta-Sigma modulator with the AK4499EX DAC, splitting the Digital-to-Analog process between these two chips for improved performance in both domains. This unique approach implemented by AKM allows for even better sound quality, pushing ahead of the older AKM AK4499 DAC. Unique Built-In Player Thanks to the addition of a MicroSD card slot, H7 is capable of direct lossless playback, in the highest quality and without any cables or Bluetooth signal degradation. Users can pair H7 with our Eddict Player app to gain full control over their music libraries. Hi-Fi Grade USB & Bluetooth 5.0 Input Equipped with a new generation of the highly-acclaimed USB chipset, the 3rd-generation XMOS XU316, the Shanling H7 can ensure top-quality digital input. The 16-core audio solution also provides a stable asynchronous connection for high-fidelity sound and full support for Hi-Res playback of PCM, DSD and MQA files. In addition, the H7 Amplifier features Bluetooth 5.0 input for convenient wireless sound, making it easy to connect to users' phones or tablets. Three Headphone Outputs & Three Gain Levels H7 utilizes three amplifier gain levels, assuring an ideal match with a wide range of headphones. The H7 amplifier characterizes the lowest gain for a hiss-free playback with the most sensitive in-ear earphones. Besides, this device features the high and unleash its powerful 1.3W output, feeding even the most demanding audiophile headphones. Long-Lasting Battery & Advanced Power Management Utilizing pair of industry standard 18650 batteries, for a combined 6800 mAh capacity, the Shanling H7 equipped with a dedicated PMU chip for advanced power management. This management is conducive to prolonging the battery life for continuous playback and overall improving the lifespan of the batteries. The H7 can last up to 10 hours using the single-end 3.5mm port.