Amplifier current vrs watts; why is current more important?

The sound level of reproduced music is proportional to the voltage. Hence, voltage is most important.; A sagging voltage would ruin the experience.  How much current you need, depends on your speaker’s resistance to AC (a.k.a. impedance) in the audible range. Well-engineered cone loudspeakers like Tannoy, Lowther, Wilson, etc. have a high resistance to AC and require hardly any current to prevent the voltage from sagging. Electrostatic speakers, which have a low resistance to AC require a lot of current to prevent the voltage from sagging.

those 1, 2, 15 W watt amps are useless.

Really,... have a list to these 20w only into 80hm amps, and say that again.
https://img.canuckaudiomart.com/uploads/large/2097160-65b80b07-mark-levinson-ml2-class-a-mono-block-...

I'm currently planning an amplifier upgrade (current one is an Arcam PA240), and read through this thread with a lot of interest as my speakers (Focal Kanta 3) have some pretty large impedence dips in lower frequencies which has led me to look for an amp that has strong current capabilities.

I'm far from an electrical expert but I'm starting to understand the above. So far the criteria I've gathered from research is to look for:

• Amps that double wattage from 8-4-2ohms
• Amps that are 2ohm stable
• Larger power supplies

Is there anything I'm missing in terms of specs to look for that indicate good current output? Amp manufacturers don't make this easy as many list out spec sheets with varying degrees of information.

 

I'm far from an electrical expert but I'm starting to understand the above. So far the criteria I've gathered from research is to look for:

• Amps that double wattage from 8-4-2ohms
• Amps that are 2ohm stable
• Larger power supplies

Is there anything I'm missing in terms of specs to look for that indicate good current output? Amp manufacturers don't make this easy as many list out spec sheets with varying degrees of information.

i think you are on the right track, nothing substantive to add, good luck!

The challenge is the fact amplifier manufacturers don't always post that info. Then it's back to looking up reviews, forum posts, etc. 

Even the size of the power supply isn't listed often, much less current delivery ability!