With only the type r 15 not revamped yet, I was thinking the same thing. Wait until eventually they redo the type r 15 inch. You would thinkl...... if they did not make any major changes that they would have at least changed the dust cap to black like the rest of the series and gave it that nice looking, less prominent R on the bottom. A year and a half now and still no new type R 15.
A Good amplifier requires a adequate power supply, It does not matter what the amplifier is capable of if the power supply will not provide the power required. Most amplifiers have under rated power supplies. It is up to you to make sure you get the ones that are least under rated if at all.