2/2Reuters. The logo of Amazon is seen at the company logistics centre in Boves, France, August 8, 2018. /Pascal Rossignol2/2WASHINGTON Executives from Alphabet (NASDAQ:GOOGL)'s Google and (NASDAQ:AMZN) head the list of witnesses for a hearing before the Senate Judiciary Committee's antitrust subcommittee next week, along with an executive from speaker maker Sonos (NASDAQ:SONO) Inc, which has been critical of the two tech giants. Ryan McCrate, an associate general counsel, will speak for Amazon while public policy specialist Wilson White will testify for Google, said Senators Amy Klobuchar, chair of the panel, and Mike Lee, the top Republican, in a statement. Also in the hearing, set for Tuesday, Sonos General Counsel Eddie Lazarus will testify, the statement said. In congressional testimony in 2020, Sonos CEO Patrick Spence accused Google and Amazon of using their dominance of search and online retail, respectively, to subsidize the smart speaker market and, potentially, dominate the market for other smart home devices. Amazon makes Echo smart speakers and the virtual assistant Alexa while Google makes the Nest series of smart speakers. The hearing takes place at a time of extraordinary antitrust scrutiny of the biggest U.S. technology companies. One result has been a series of investigations and several federal and state lawsuits filed against Google and Facebook (NASDAQ:FB).