Crystal's SAGA amplifier
The Arabesque speakers ($90,000/pair) in the Crystal room, with their glass enclosures, were familiar, as were the Crystal cables that Jason Serinus blogged about a few days ago. But the Siltech SAGA amplifierfor Structural Amplifier Gain Architecture were new. Designed by Siltech's Edwin Rijnveld and costing $100,000, the three-piece, 300Wpc amplifier comprises a preamplifier chassis with ultralow-noise tubes, a battery-powered voltage-amplifier chassis, and a current-amplifier chassis. No negative feedback is used, either global or local, and the current amplifier uses optical drive of the output transistors, called "Apollo Light Drive." Output device biasing is said to be class-A at all powers into all loads.
The sound of a Marcus Miller solo bass guitar track had superb dynamic resolution, even at low playback levels.