Without a doubt, M0 was the most popular product we ever released. It convinced people to upgrade from their Sansa Clips to a proper Hi-Fi player, it was used as a USB Transport for DACs costing 10x its price, it was even glued to the shell of headphones, turning them into a DIY all-in-one rig. And it filled the empty space left after the legendary iPod Nano. _ Our new M0 Pro follows closely in its steps, but this time we managed to squeeze in a full balanced audio circuit! With two pieces of ESS ES9219C DAC/AMPs, M0 Pro will be able to provide improved sound quality and increased output power. Making the most portable player sound even better! _ To utilize the balanced output, while keeping the overall size of M0 Pro same as its predecessor, we got creative and implemented a brand-new type of 3.5mm connector, combining both single-ended and balanced connections into one. Working perfectly with all your standard single-ended 3.5mm connectors, while allowing for a proper balanced connection through a special 5-pin 3.5mm to 4.4mm adapter (Adapter sold separately). _ And we can’t forget the bi-directional Bluetooth, such an important feature of the original. M0 Pro now packs an upgraded Bluetooth 5.0 chip, assuring compatibility with the latest Bluetooth headphones and improving connectivity. _ Free : Shanling M0 Pro Leather Case