V34a PRO Hearing Loop Driver


Our highly efficient and powerful V34a PRO is a constant current hearing loop driver with dual output for phased array loops. It is designed for large facilities and venues.

It has a Class-D amplifier output stage and an audio subsystem built around advanced digital systems including an ARM Cortex processor and dual DSPs. Combined with a powerful CPU to ensure peak performance, the V34a PRO provides self-monitoring and email alerts, remote setup over local area networks, guided hearing loop setup to make installation simple, and excellent speech and music reproduction.


  • Inbuilt guided hearing loop setup utilising an integral test signal generator
  • Intelligent self-monitoring system supplies status emails on changes to driver functions
  • Dual-DSP controlled automatic gain control and high frequency compensation for metal loss
  • Class-D amplifier output stage capable of delivering 12ARMS @ >34VRMS
  • Highly-rated custom heat-sinks and active cooling
  • Integrated universal switch mode power supplies provide ultra-efficient power utilisation (up to 90% efficient)
  • Constant current output stage
  • Adjustable audio time delay for audio syncing across large distances
  • Intuitive and sleek user interface on a full colour, high resolution LCD
  • Adjust both drive and loop output levels using an embedded LAN service, minimising installation time
  • Settings/profiles saved to a USB storage device
  • Continuous self-testing
  • Integrated protection circuits with temperature, voltage, short circuit and DC detection
  • Full width 1U 19” rack mount

System Components

IEC Power Lead

A region-specific IEC lead 2 metres in length.

2 x Large Area Hearing Loop Signage

Signage should be clearly placed wherever a hearing loop is installed.

2 x NL4 Connector

The PS-60 Power Supply is a Level VI power supply.

Rack Brackets

The PS-60 Power Supply is a Level VI power supply.


6U Rack Cabinet

Our 19” equipment rack cabinet features a lockable front, left or right hinged doors and removable side panels for easy maintenance. It can be either wall mounted or sit on a surface

Hearing Loop Hub

Visit our Hearing Loop Hub to see how hearing loops work, what different types of loops can do for your business, the latest information on legislations and standards, and frequently asked questions.

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