Components listed here have been formally reviewed in Stereophile and have been found to be among the best available in each of four or five quality classes. Whether a component is listed in Class A or Class E, we highly recommend its purchase.

Each listing-in alphabetical order within classes-is followed by a brief description of the product's sonic characteristics and a code indicating the Stereophile Volume and Issue in which that product's report appeared. Thus the May 2017 issue is indicated as "Vol.40 No.5."

We have received the sad news that loudspeaker maven Siegfried Linkwitz, co-inventor of the innovative Linkwitz-Riley crossover network, has died. He had been suffering from prostate cancer for some years and had been receiving hospice care at his home.