For efficient speakers, how much difference does an amp really make?

You are on the right track. The Binford 2000 LE at 113 dB is so efficient it doesn’t even need an amp. The voice coils pick up RFI, you don’t even need a source!

Sorry, but its been a long day of silly questions- and even worse replies. Look, you want music, or you want watts? You want music then you forget watts, get something like a Raven integrated (or Prima Luna, if you’re okay with the whole CCP export virus thing) and sit back and laugh at how you ever thought anyone actually ever had a need for hundreds of watts.

Because yes of course there are huge- not subtle, huge- differences between amps. Especially when you get into good tube integrateds and discover what solid state has been trying (and failing) to be all these years.  https://systems.audiogon.com/systems/8367 A 50 wpc tube amp. All the power you will ever need.

But if on the other hand you want watts then okay, its your system, be my guest. You’re off to a good start. Carry on.

(or Prima Luna, if you’re okay with the whole CCP export virus thing) and sit back and laugh at how you ever thought anyone actually ever had a need for hundreds of watts.

Because yes of course there are huge- not subtle, huge- differences between amps. Especially when you get into good tube integrateds and discover what solid state has been trying (and failing) to be all these years. https://systems.audiogon.com/systems/8367 A 50 wpc tube amp. All the power you will ever need.

Isn’t your Melody and Dayton Audio Amp are came from the virus exporting CCP?

My speakers are fairly efficient as well.
 I have 650W mono’s on them.
i like the headroom, and the ease of the audio.
 I will never look back at less than 300+W rms.

 That’s just me.

you will need the headroom for finale, the crash from a sudden ending song, or a crescendo, with absolutely no chance of clipping., and the effortless capability of having more high quality watts.

been through quite a few amps/receivers since about 1985/86

 lived with 150w receivers amps for years, until I bought a amp which failed, and they gave me a sunfire 300 on loan, I’ve never looked back.

my .02¢

I had a pair of outlaws on trial..... they were ok but their ATI built amps sound much better.  Those speakers deserve better !!    The ATI 2002 is a bargain on the used market.  McCormack DNA 225 also great value used. 

I have had both in my system and although I have gone to the dark side, those are two amps I could live with again if I ever went back to SS.  I had the 225 on loan and actually bought a DNA 125 new, great amp that I regret selling.

Personally I would avoid something as old as the Adcom ...  those are pretty old at this point .