This is Gustard's new flagship delta-signa DAC that uses two of the AKM AK4499EX DAC chips. http://www.gustard.cn/?post_type=products&page_id=16925 https://shenzhenaudio.com/products/gustard-a26-dac-mqa-dual-ak4499ex-chip-with-streamer-renderer-pcm768-dsd512-xmos-high-performance-audio-decoder...