It began when I reviewed the MartinLogan Montis loudspeaker (September 2012
). The amplifiers I had to drive the pair of them were the PrimaLuna ProLogue Premier
integrated ($2999), the Audiopax Mk.II
(no longer available; the Mk.III costs $22,000), and the Simaudio Moon Evolution W-7
($9000). The first two are tubed, with power in the 3040Wpc range; the solid-state Simaudio puts out 150Wpc. The Audiopax, which sounds great with my Avantgarde Uno Nano
s, turned out to be not such a good match for the Montises: weak in dynamics, and too soft sounding. The PrimaLuna and the Simaudio were better overall, each with its strengths and weaknesses, though neither was ideal. I really liked the ProLogue Premier's tonal characteristics, and wondered what a higher-powered tube amp would sound like with the MartinLogans.