More power and headroom alone may help get bass right especially at high SPLs by avoiding clipping, but alone is most likely not a complete solution in most cases.
Current delivery and related damping factor of an amp also contributes. How much will vary but more difficult load speakers generally benefit from more current delivery capability to control the bass better, meaning a beefier amp than one perhaps of similar power but less current delivery capability. Power and current are not the same thing.
For example Magnepans are not very efficient and benefit from more power but not nearly as much from more current than many dynamic models. Smaller dynamic designs with more extended bass tend to be the least efficient and to also present a more challenging load, so more power and current is typically the key there.
OF course then room acoustics are a big factor for bass frequency response and all that goes with that as well, but that has nothing to do with the gear itself. Once you have an idea of approximately where the speakers will be located, its much easier to get the gear matching right first, then deal with the much harder room acoustics after. Having flexibility in final speaker location is a big help when it comes to bass and room acoustics in general.
Current delivery and related damping factor of an amp also contributes. How much will vary but more difficult load speakers generally benefit from more current delivery capability to control the bass better, meaning a beefier amp than one perhaps of similar power but less current delivery capability. Power and current are not the same thing.
For example Magnepans are not very efficient and benefit from more power but not nearly as much from more current than many dynamic models. Smaller dynamic designs with more extended bass tend to be the least efficient and to also present a more challenging load, so more power and current is typically the key there.
OF course then room acoustics are a big factor for bass frequency response and all that goes with that as well, but that has nothing to do with the gear itself. Once you have an idea of approximately where the speakers will be located, its much easier to get the gear matching right first, then deal with the much harder room acoustics after. Having flexibility in final speaker location is a big help when it comes to bass and room acoustics in general.