Hi Mitch2, my PFO article on Veritas details all the technical information that I have gathered on Veritas, based on conversation with Merrill, and by reading the publicly available technical literature on the amp. See:
http://positive-feedback.com/Issue68/merrill_audio.htm
Unfortunately, I have not heard the ATSAH, so I really cannot comment on internal differences, nor sonic differences.
In itself, Merrill Veritas is exceptional value for its $12K list price. In a more traditional SS design, At the time of my review a couple years ago, I would have expected such sound to be more in the capabilities of an excellent amp in the lower $20K range.
Although there are obvious commonalities between the behavior of M925 and Veritas, there are quantitative and qualitative audible differences, which are however less than the price difference would suggest.... Famous laws of diminishing returns that audiophiles are acquiented to *grins!*
Thus, were I to ignore any budget considerations, my preference would comfortably go to M925 for the following parameters:
* Power reserve
* authority.
* Macro and micro dynamics.
* Harmonic exposure.
* Linearity.
* Frequency extension.
Transparency.
* Sweetness and complexity of treble.
* stage size and concreteness.
* Imaging concreteness.
* Aliveness of "black" background... Also called the sound of the silence between the notes... Or the reproduction of ultra-low level information.
* Immunity to electronic background noise.
* Immunity to intermodulation artifacts in the treble region.
Yet again.... let us Keep things into perspective.... the rowland M925 was engineered with a sophistication commensurate with its pricepoint just shy of $60K, several times the price of Veritas.
Saluti, Guido
