Loudspeakers Digital Sources Accessories
By Robert Deutsch Posted: Mar 28, 2010
Barrie, Ontario, about an hour's drive from Toronto, with a population of about 130, 000, is not a city that I associate with the design and manufacture of high performance audio equipment. It doesn't have even a single "real" audio store, just Best Buy, etc. But, as I found out at SSI 2010, Barrie is the home of McAlister Audio, maker of the OTL-195 monoblock amplifier and a prototype preamp. The designer is Peter McAlister, who produced his first prototype output-transformerless power amp ten years ago. The OTL-195 puts out 150W, and appears to be a very sophisticated design: fully balanced, able to drive 4 ohm loads, a circuit that tracks the signal level in the driver stage and modulates the control grids of output tubes, and various other circuit refinements. The OTL-195 is hand-built by Peter McAlister himself, and utilizes high-quality parts. The price is $8500/pair. As I mentioned in the blog posting below, the King Sound Prince IIs sounded great driven the McAlister OTL-195s.