[jdandy]

Originally Posted by myjazz123

Dan and others, do you think f-03a will be able to drive speakers like Sonus Faber Guarneri evolutions, or better to go with F -05.
Dan , why do you prefer F-03a?

myjazz123.......Into a 4 ohm load, such as the Guarneri Evolution the Esoteric F-03A can output 60 watts of Class A power per channel. Although the Evo's sensitivity of 86dB/1w/1m is not as efficient as any number of other speakers, 60 watts is still enough power to drive those speakers to a respectable volume with sufficient reserve power to ensure accurate dynamics. 15 watts output is enough power to have the Evo's singing at approximately 98dB measured at one meter. Sitting approximately 3 meters away from the speakers will typically reduce your volume about 6dB. This means that a comfortable 90 to 91dB volume level can be achieved with the Esoteric F-03A loafing along at 15 watts average output with momentary peaks reaching near 60 watts. So as long as you are not trying to achieve rock hall volume in a large room a 60 w/p/c amplifier will work perfectly well with the SF Guarneri Evolution.

My preference for the Esoteric F-03A is based on it being a Class A amplifier and I like the shutter that hides the secondary controls. I have never owned a Class A amplifier, that is if you don't count a couple headphone amplifiers. The new Esoteric F-03A intregues me for those reasons.