Rkmca, why do you want to change amps? Is there something the PS Audio is doing, or not doing, that annoys you or otherwise leaves you unsatisfied? From your comments it appears that you haven't even heard the newer Rowlands. Comments by others state that they are very different than either the Concentra II or Model 112. That being the case and considering system synergy as a whole, the new Rowlands may not perform any better than your existing setup even if they are in some absolute sense better amplifiers than the PS Audios.
