I listened to the Concertos paired with the Plinius integrated at a shop and it sounded fantanstic. I did a home demo of the Concertos with My Musical Fidelity 50 watts per channel amp and they did not sound good at all. There was no bass control or bass clarity (one note bass) in our room. I had the same exact problem with the Linn Tukans in a home demo. Again the Tukans were listened to at the shop with the Plinius and sounded fantastic. I feel that the Plinius would be a great match for the Concertos but at $3000.00 there are a lot of other options. I suspect that the Concertos will require a high current amp (not necessarily high wattage) whether it be tube or solid state to perform their best, which does narrow it down considerably. It would be helpful if you would state your budget.