The IsoAcoustics Aperta 200 is a high quality sculpted aluminum acoustic isolation stands. Silver. Sculpted aluminum acoustic isolation stands designed especially for high end hi-fi bookshelf and desktop speakers, for large speakers on floor stands, as well as under floor-standing speakers. The Aperta 200's solid aluminum frame and isolator construction is designed to support large speakers weighing up to 75 lbs. The stand features a low profile (3.5 inches), enabling speakers to have a low stance while enhancing their clarity and performance. The stands' unique tilt adjustment enables the user to set the optimum tilt angle, with fine gradation markings provided to ensure precise angle adjustments. The IsoAcoustics Aperta 200 stands feature a unique integrated tilt adjustment to dial-in the optimum tilt angle, with fine gradation markings provided to ensure the precision of the angle adjustments.