Ledinhhien, if you were open to Mapman's suggestion of looking at 'greener pastures'. . . you may want to have a look at a couple of class D amps that sound particularly refined to me. In general, ICE power amps yield high output currents and high damping factors that make them particularly suited for difficult loads. But, to the contrary of class A amps, they are extremely efficient and runn rather cool to the touch. Traditionally they tended to sound a little "matter of fact" or even etched, but designs have been evolving rapidly, and some recent models are incredibly musical instead. My current prefs:
Jeff Rowland 312 stereo -- Substantially priced at $16K. . . but Audio Revelation on Agon seems to be offering a unit for $9.5K. It is also a relatively hefty brick at 70Lbs. I use it to drive a pair of Vienna Mahlers. . . which have somewhat wild impedance curves. I have written a sidebar article on this amp on TAS 188. . . I believe it's on page 80, part of my Vienna Mahler review. I just love this device!
Bel Canto Design Ref 1000 Mk.2 monoblocks -- heard the smaller Ref 500 at RMAF driving TAD minimonitors. . . and they were magnificent. I expect that the Ref 1000 will give you more heft and as far as I know even greater refinement than the smaller Ref 500s. Cost $6K. . . they look unprepossessing at only 15Lbs each, but do not let that fool you for a second! G.
Jeff Rowland 312 stereo -- Substantially priced at $16K. . . but Audio Revelation on Agon seems to be offering a unit for $9.5K. It is also a relatively hefty brick at 70Lbs. I use it to drive a pair of Vienna Mahlers. . . which have somewhat wild impedance curves. I have written a sidebar article on this amp on TAS 188. . . I believe it's on page 80, part of my Vienna Mahler review. I just love this device!
Bel Canto Design Ref 1000 Mk.2 monoblocks -- heard the smaller Ref 500 at RMAF driving TAD minimonitors. . . and they were magnificent. I expect that the Ref 1000 will give you more heft and as far as I know even greater refinement than the smaller Ref 500s. Cost $6K. . . they look unprepossessing at only 15Lbs each, but do not let that fool you for a second! G.