We may be talking at cross purposes here, but bear with me for a minute.
The kind of amp you want, one that can drive speakers as well as headphones, exists in our product line; it's called the S.E.X. amp (Single-Ended eXperimenter's). But like most SET amps, it is low powered - 2 watts per channel, which is 3dB greater than 1 watt.
I have found that if an amp + speaker can produce 102dB at full power, it's loud enough for "most audiophiles, most of the time." Your speakers with a 2 watt amp can only produce 89dB; to get the full benefit of those speakers you'd want 40 watts (16dB above 1 watt).
"Full benefit" here means concert-hall loudness, in a largish living room, of a Mahler symphony or similar complex, spectrally dense material. This is similar to the THX home-movie-theater specs. But if you have a small room and/or cranky neighbors, or if you listen in the near field (think computer speakers), or if you don't really listen very loud, that might work with the S.E.X. amp. We make a speaker kit, the Pipette, for just such applications - it's rated at 85dB sensitivity.
The reason I mention this amp is that, like the Crack, it can drive a larger (40-watt?) power amp of your choice if you find it unsatisfactory.
