hd QT-ETH-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-ETH series consists of 4-channel Class D power amplifiers featuring switching power supplies specifically optimized for sustained high power output, delivering high energy (power × duty cycle) for superior low-frequency reproduction.

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