Further testing, works by disabling direct mode and integer mode. Using direct mode only output is very distorted. With integer mode on, behavior described above occurs. This is new in 1.3.9.9. Other normal PCM playback works very well with direct mode and integer mode for my custom USB interface. Anyone else see this issue with SACD -> PCM playback using direct mode and integer mode with 1.3.9.9?
Dave