I know these are priced out f your target price area, however, I just wanted to let you know that these mono amps are capable of driving load impedances and are rated to drive as low as 1.5 ohms with 340 watts available, the modified for 2009 models have two extremely large transformers and 8 6550 tubes per mono block. These are my dream tube mono amps. These amps were specifically developed for low impedance speakers and will drive just about anything on the market today.
http://www.octave.de/htdocs/verstaerker/jubilee_endstufe.php
http://www.octave.de/english/products/jubline/info_jubmono_eg.htm
I heard these driving a set of B&W Nautilus 800's and they exhibited so much control over the bass and speaker that you would have thought a pair of subs were being used and that the wattage may have been way higher then advertised. I was just posting this as there are tube amps capable of driving very low impedance loads.
Ciao,
Audioquest4life
http://www.octave.de/htdocs/verstaerker/jubilee_endstufe.php
http://www.octave.de/english/products/jubline/info_jubmono_eg.htm
I heard these driving a set of B&W Nautilus 800's and they exhibited so much control over the bass and speaker that you would have thought a pair of subs were being used and that the wattage may have been way higher then advertised. I was just posting this as there are tube amps capable of driving very low impedance loads.
Ciao,
Audioquest4life