In 1976, Peter Ledermann was hired as assistant to Bruce Zayde but on his second day was thrust into the role of Director of Engineering; Zayde was quitting. Ledermann spent the next two years re-engineering the complete electronic product line, including putting into production the 902, a bucket-brigade based rear channel delay unit. His efforts put Bozak once again into the position of being able to produce and service electronic products reliably and repeatedly. Later, working with Richard Majestic, for whom Ledermann worked previously at RAM Audio, the two men designed the new Listener series, the LS-200A, 220-A, 330-A and others, employing a soft dome tweeter for the first time, as the Bozak tweeter did not have the top end range extension needed to attract the changing marketplace.