ART Pro Audio HVA4

A 70 V / 100 V solution designed for installed sound

The ART HVA4 follows the logic of 70 V / 100 V Public Address line systems, a long-established standard for public venues (retail stores, workspaces, schools, multipurpose rooms) where reliable, scalable multi-zone sound distribution is required. In this type of installation, the goal is not only power, but above all stability, easy wiring and the ability to operate for long hours without intervention. With its Class D amplification and 1U rack format (44 mm in height), the HVA4 is designed for quick integration into a technical rack, while maintaining consistent audio performance for speech and background music.

Who is it for, and what is it used for?

The HVA4 is intended for integrators, technicians and operators who need a line amplifier to power a 70 V or 100 V loudspeaker network, with direct control and no software complexity. It is well suited to sound reinforcement for multiple zones, managing separate input levels and ensuring reliable operation through comprehensive protection circuits. Its 120 Hz to 17 kHz bandwidth (at minus 3 dB) makes it primarily suited to speech, announcements and background music distribution, where intelligibility and consistency take priority over low-frequency extension.

Technical specifications

Type	100 V Public Address line amplifier	Signal-to-noise ratio	greater than 95 dB
Amplification	Class D	Crosstalk	greater than 70 dB
100 V output power	2x 300 W	Damping factor	greater than 200
70 V output power	4x 270 W	Front panel	On / Off switch + 4x input level controls
Input sensitivity	0.9 - 1.1 V (0 +/- 1 dBV)	Rear panel	70 V / 100 V switch
Input impedance	20k (balanced) / 10k (unbalanced)	Input & output connections	Euroblock
Voltage gain (100 V)	40 dB	Dimensions	483 x 360 x 44 mm
THD+N	less than 0.1 percent	Weight	6.2 kg