Hearing augmentation

Domestic loop driver Optical and 3.5mm inputs

Product Code: CO-HLD3

RRP $429.00
Unit of Measure


2 Year
Technical Specifications
Brands Contacta
  • Details
  • Downloads
  • Where to Buy
  • Ordering

HLD3 Hearing Loop Driver

Contacta HLD3 is a sleek and powerful hearing loop driver that connects to televisions and other audio devices. It enables hearing aid wearers to listen wirelessly, directly from the source, providing the best possible sound quality.

HLD3 is simple to setup and installation can be adapted to suit different room layouts.

Integrated clear audio processing gives the user outstanding sound quality, enhancing speech and music clarity.



Suitable for home use as well as business use in small rooms where a television is present such as:

  • Waiting rooms
  • Meeting rooms
  • Classrooms
  • Museum theaters


  • Quick setup
  • Simple connection to a room loop or a loop pad underneath a sofa or chair 
  • Optical in for clearer sound less prone to interference
  • DAC
  • Connects to multiple devices
  • Constant current for consistent audio performance
  • Separate volume control
  • Sleek metal case
  • HF compensation

Area Coverage

  • 30m cable
  • Loop pad


Technical Data


  • Microphone
    • 2 way phoenix screw terminal blocks unbalanced 3.3VDC for electret microphones
  • Stereo IN
    • ¼” / 3.5mm stereo jack, -20dBV to +3dBV
  • Optical Digital
  • 33kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz

Loop output

  • Stereo OUT
    • 2 x 2 way phoenix screw terminal blocks
  • Loop drive current
    • 3A RMS compliance current at 1kHz sine wave
  • Loop drive voltage
    • 3.5V RMS compliance voltage
  • Loop connection
    • 2 x 2 way phoenix screw terminal blocks


  • External monitor
    • Contacta communications processor interface


  • Frequency response
    • 100 Hz – 5kHz (±3dB)
  • Distortion
    • Better than -40dB, inputs at nominal level

Automatic gain control

  • Analogue
    • Dynamic range: 40dB typical
    • Attack time: 10 milliseconds
    • Release time: 500mS


  • Volume / Driver
    • Controls the level of current delivered into the loop


  • Other indications
    • LEDs for power, input and output

Physical Data


  • 30mm

Width –

  • 158mm


  • 111mm


  • 1084g


  • UL compliant
  • FCC class “B” EMC (emissions)
  • IEC 60118-4:2006 (will be met in correct installations)
  • BS EN 55103-1:2009 (EMC emissions)
  • BS EN 55103-2:2009 (EMC immunity)


  • Loop pad
  • RX-20-US loop listener
  • FSM field strength meter
  • Flat copper tape
  • Concrete burial cable
  • Speciality installation tracks

Product Documents

Ordering from Amber Technology

Logging in

New to Amber Technology?

You can place an order using guest checkout, and we’ll email your order details when we ship.

You can register by following this link. When you register, we will retain your order history and checkout information for future transactions. Registration is quick and free. We’ll never share your registration details outside Amber Technology.

Are you an Amber Technology account customer?

Your user id is the email address that’s recorded for your account. If you don’t know or have forgotten your password, please reset it using this link.

If you need help with any login or site-related issues, please contact us here.


Orders placed though the Amber Technology website are despatched from our Sydney warehouse. Orders placed before 1.00pm Sydney time (for items in stock) will generally be shipped on the same day. 

We ship using Australia Post and Startrack Express. We deliver Australia-wide to residential, business and PO box addresses.

Shipping is free for all orders over $275 including GST (effective 1 March 2018). There is a $22 (including GST) shipping and handling charge for all orders under $275 including GST. 


You can track your shipment through the web sites of our couriers:

Australia Post

Star Track Express 

We will email the tracking number for your shipment shortly after it’s been despatched. If you have any questions regarding shipping, please contact us.


Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

All items purchased from Amber Technology will be covered under warranty. The duration and terms of this warranty are specified by the manufacturer unless otherwise stated. Warranty information is available on the individual product listings on this site.

Refurbished items will include a 12 month warranty unless otherwise stated.

Please contact us if you have received an item which has been damaged in transit or is otherwise not working correctly when you receive it. Subject to availability, we will arrange for a replacement item to be despatched and for the faulty item to be returned to us. 

Amber Technology maintains a nation-wide network of carefully selected Authorised Service Agents to ensure that you are never far from convenient, expert technical and service support. If your item develops a problem and requires servicing under warranty, please contact your local Authorised Service Agent.

Stock Availability

The availability of stock is communicated via the indicator of each product listing page. "Available" means that reasonable stock is in our warehouse, ready for immediate shipment. "Limited Stock" means that we have only a small number of items in stock. "Out of Stock" means this item is currently unavailable for immediate shipment - orders placed for ‘Out of Stock’ items will be fulfilled as soon as replacement stock arrives.

"Special Order” items are products that are not generally kept in stock in Australia. Lead times for Special Order items vary depending on country of origin, manufacturer’s stock levels, factory production schedules and/or incoming shipment transit times. Please contact us for an estimate as to the likely lead time.

Refurbished items

If refurbished stock is available, this will be shown on the summary page for the product. If a product listing only allows you to choose refurbished stock, we are not holding new stock and we can no longer obtain new stock.

Refurbished items are always in perfect working order and will include all accessories. Refurbished items are may

  • have a damaged carton
  • have been used for demonstrations
  • have been repaired
  • have minor imperfections that do not impact performance.

Refurbished items include a 12-Month warranty unless otherwise stated.

Technical Support

Please visit the Get Support page to find a service agent, log a service ticket, or ask a technical question about your product.


Please contact us if you have received an item which has been damaged in transit or is otherwise not working correctly when you receive it. Subject to availability, we will arrange for a replacement item to be despatched and for the faulty item to be returned to us.