LATEST ADDITIONS

Hi-fi system resolution has long been the cause of heated arguments. But when it comes to converting digital data to an analog signal, there can be no argument. Data go in at one end of a DAC and an analog signal comes out of the other end, with a noise floor directly rated to the combination of the converter's digital and analog resolution. Ever since I started measuring digital products for Stereophile, I have been expressing a D/A processor's effective resolution in terms of the equivalent number of bits.

For the first time in the two years I've been living in this apartment building, I've received a noise complaint from a neighbor. Coincidence?

As it happened, yes it was a coincidence. True, my music was pretty loud, and the bass from the Piega Premium Wireless 701 loudspeaker system ($7495/pair) was anything but reticent, especially considering the tower's sleek appearance. But I was not the source of the specific noise that caused the complaint. That was the sloppy bass from another neighbor's inferior sound system. (The bass from this Piega system isn't sloppy.)

After completing a PhD in electrical engineering at Imperial College London, Floyd E. Toole joined Canada's National Research Council (NRC), where he would stay for more than 26 years doing audio-related research. He continued his research at Harman International after leaving the NRC in 1991. When Toole left Harman in 2007 (footnote 1), Harman kept the work up under NRC alum Sean Olive—which fact surely has much to do with the excellence of their current loudspeaker lineup.