hd QT-Series

Harmonic Design system amplifiers are equally suited to all types of touring and installation applications. Across all loudspeaker series, they are at the same time the ideal drive and control center for the greatest possible performance and linearity of Harmonic Design sound reinforcement systems.

The hd QT-Series are 4-channel class D power amplifiers with switched-mode power supplies specially optimized for long-term maximum performance, which deliver high energy (= power × hold time) for the best LF reproduction.

Concentrated on the essentials and cost-efficient: Reduced to the most important features in everyday touring and intuitive to use, the hd QT-Series delivers reliable high performance day after day in just 2 U. Four analog inputs enable Plug&Play. A generously dimensioned cooling system with temperature-controlled fans allows operation under full load with minimal noise development.