Considering aesthetics and featurization ergonomics, the Amethyst’s fascia is far more sophisticated and elegant than that of the earlier ST2-HiFi. Within the Amethyst each source can be defined precisely by name, icon, default input connector, clock mode, preset filter, FIR or user equalization and sensitivity level to adjust input levels for matched playback volume for all sources. The buffer size can be adjusted to prevent loss of synchronization from inconsistent audio stream but this also extends the delay time. Clock mode and clock source frames can be saved as preset. Now the clock source parameters become unavailable since slave mode synchronization no longer applies. This is the default mode for networked music. In master mode the Amethyst uses its own internal clock for synchronization. The choice of clock signal happens in the clock source frame. In slave mode the Amethyst syncs itself to an external clock signal embedded in a S/PDIF or AES/EBU stream from a digital transport or a dedicated external word clock. Inside the settings menu, the Amethyst allows for two clock modes: slave & master. It also sports a BNC word-clock i/o for any high-end master clock to improve its native jitter attenuation of >50dB above 100Hz. The Amethyst uses an A/D which processes up to 24/96 and a D/A conversion engine limited to 24/192.
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