It's real power is not 50 wpc into 8 ohms but more like half that. I did try the DTA with some 4 ohm 84db Aerial Acoustics and it drove them quite well in my bedroom.
This wouldn't be the first small amplifier whose "labeled" wattage rating was at a fairly high THD. Although it can be debated whether you can hear the difference between .001%, .01% or .1% THD, 5.0% THD is a level of distortion from which you would probably want to back off the volume. The 50W/ch rating is at <5.0% THD, but the rating at a more commonly compared <.01% THD is 30W/ch.
Although the minimum speaker impedance is rated at 6 ohms and the manual does state
"Note: Operating this unit with a 4 Ohm load may result in damage to the amplifier and void the warranty.", the fact that Poultrygeist used it sucessfully with a 4 ohm / 84dB speaker underscores that the operative word is "may", and a different "4 ohm" nominal speaker may or may not present a more difficult load, so the temperature of the amp would be something to at least be aware of if running lower impedance speakers.
Steve
