The new Asahi Kasei Microdevices flagship D/A converter - AK4499EQ - should be in mass production already (according to AKM: "Engineering Samples will be available in January, 2019, and Mass Production starts from May, 2019"). Numbers looks nice:
- Maximum Sampling Frequency, Bit rate : PCM 768kHz/32-bit, DSD 22.4MHz
- SNR : 134dB (Mono mode: 140dB)
- THD+N : -124dB