The HFA series of loudspeakers are fully powered public address systems (the HFA206 also have a passive version), designed to deliver high performance and extreme dynamics, linearity and fidelity for unmatched performance at a very competitive price. The HFA series of loudspeakers are fully powered public address systems (the HFA206 also have a passive version), designed to deliver high performance and extreme dynamics, linearity and fidelity for unmatched performance at a very competitive price..PZA MORE SPECS