Audio Design HAS-3S Pro Amplifier/Speaker Selector

Audio Design HAS-3S Pro

High-End Amplifier/Speaker Selector

Purchased in like-new condition and used for only about a week,
so it is in beautiful condition with no noticeable scratches.
The operation is flawless, and as described, I did not feel any degradation in sound quality.
Above all, the construction and operation of the switching mechanism are satisfying,
making you want to use it with high-end equipment.

Product Concept

A speaker selector with no sound quality degradation, suitable for high-end audio. Also ideal for amplifier switching.

This is a high-grade model of the HAS-3S speaker selector, using superior components for the switching mechanism and speaker terminals. The spacing between speaker terminals (center to center) is generous at 22mm horizontally and 35mm vertically, so there is no risk of damaging your power amplifier due to short circuits between terminals.
It achieves an outstanding low resistance of 4mΩ (measured value between terminals), so there is no need to worry about sound quality degradation or a decrease in damping factor (DF). It can be used with all amplifiers, from vacuum tube to transistor. It also supports BTL amplifiers that switch both positive and negative terminals.
Applications

This is a top-quality speaker selector meticulously crafted by an amplifier manufacturer, selecting only the finest audio parts without compromise. In addition to speaker switching, it can also be used as an amplifier selector for switching the outputs of power amplifiers and integrated amplifiers.