mo' better bass: any substitute for watts?

Something quite basic , that has not been touched upon here , is the configuration of those added watts .
Watts are a result of the amount of volts and amps going through a device . Amps are the driving force of the volts which do the work . It is the amps that will drive the volts through a tough crossover network and into a power hungry woofer .

You can have the same amount of watts with 2 amps (with higher voltage) or 20 amps (with lower voltage). But the 20 amp watts have the ability to do much more with a tough load . This is why some amplifiers will double down as the ohms decrease within a speaker , such as 100 watts into 8 ohms , 200 watts into 4 ohms , 400 watts into 2 ohms and so forth . Where as a low amperage amplifier may do 100 watts into 8 ohms and 125 watts into 4 ohms etc.

And yes , it usually costs more to make high amperage watts than high voltage watts .

Just a though .

Thanks to all for the responses to this point. Would love to hear any other opinions. Consensus seems to be that more watts will help my situation.
I have considered a digital amp (Trends)as Shiva suggested, not sure if it would deliver the goods on an 89dB-rated speaker. I'd love to try Rega Brio 3 (loved my Brio 2000) but I really want a remote, and again, wondering if "49" wpc will bring the bass to life. How would it work to use the volume control on the Oppo with a Brio having it's volume knob turned up?
Another comment - I've seen it mentioned more than once that an amp that can double its 8 ohm watt ratinginto 4 ohms is regarded as a "high current" amp, as Saki suggests. Bob, are you saying that this characteristic doesn't indicate a high-current design or just that this isn't an indication of bass capability? I'm looking at an amp that does 100 wpc into 8 ohms and 125 into 6, no 4-ohm rating given.

first of all, what is the frequency range of your speakers? you need to find that out first.