Quintessence Acoustics Shadow Loudspeaker
Source: the audiophile voice, volume 3, issue 4

Quintessence Acoustics Standard Loudspeakers (links to external site)
Source: SoundStage!, March 1999

Lamm Audio, PAD, Quintessence Audio Review
Source: SoundStage!, Hi-Fi '97 Show Report

The 1997 WCES: Lost at Alexis (excerpt)
Source: The Audiophile Voice, Volume 3, Number 2, page 31