Teranis is a lovely amp indeed. Yes, I would consider its overall performance as a junior, and perhaps subtly warmer version of the Merrill Veritas.
In its default configuration of 26dB gain, Teranis will do fine with moderately large speakers that do not present particularly tough load challenges... With my Vienna Die Muzik, and the amp driven by Rowland Aeris, when increasing volume to realistic listening levels, suddenly the sound crosses into an area of lesser linearity, where the presentation becomes slightly boomy/shouty and less relaxed.
However, this is not a fatal flaw. Merril increased my evaluation unit gain to 29dB, which enabled Teranis to handle my speakers with ease.
It is worth noting that some other NCore NC500-based amps -- such as the Acoustic Imagery ATSAH 500 -- sport a dedicated NC1200/700 SMPS per channel instead of the single NC1200/700 shared for the two channels in Teranis. I conjecture that such implementations might be better suited for relatively demanding speakers.
Regards, G.