Ampetronic CLD001-CB

The Ampetronic CLD001-CB is a complete induction loop counter kit with a boundary microphone. Although sold as a kit for use on a counter, the loop amp can provide coverage of up to 35m² so is ideal for any small area. (Actual coverage depends on the aspect ratio of the room.) 

The kit in centred around the Ampetronic CLD1 compact induction loop driver which is specially designed for small areas, counters and customer service desks. In fact, in any situation where face to face interaction is required, the CLD1 loop driver provides a neat unobtrusive method of improving communication for the hearing aid user.

This small and rugged unit offers high quality audio with metal loss correction and 2 independent inputs – 1 mic and 1 switchable mic/line, each with its own level control.

In addition to the CLD1 loop driver, the kit includes a boundary microphone, pre-formed counter loop, installation guide, power supply and ‘loop present’ sign.


  • Very compact
  • Boundary microphone and pre-formed loop supplied
  • 2 independent inputs: 1 mic input and 1 switchable mic/line input
  • Metal loss compensation
  • All connections to a single face for easy installation
  • external power supply


List Ex VAT: £280.80
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Input Power

12V DC @ 1.0A max.
Fuse fitted to PCB, type T 1.6A L
Green LED Power indicator

Input 1 – Mic Input

Suitable for unbalanced electret microphone
3.5mm mono jack socket
Input impedance 8kΩ.
6v bias via 10kΩ source
Sensitivity -60 dBu for max output
Overload level -14 dBu.
Recessed control on front panel

Input 2 - Switchable line / mic

Recessed switch on connector panel
3.5mm mono jack socket
Microphone as for input 1
Line input:
Input impedance 820kΩ
Sensitivity -20dBu for max output
Overload: >+20dBu

Drive voltage

>3.2Vrms >4.5Vpk at maximum output current

Drive current

2.4Arms 3.4Apk continuous 1kHz sine wave
Short term peak >4.8Apk
LED indicator on front panel

Loop resistance

0.3Ω to 1.0Ω resistive or

Loop connector

Vibration proof clamps, accept 0.5 to 1.3mm2

Frequency response

80Hz to 6.3kHz ±1.5dB

Automatic gain control

AGC optimised for speech
Dynamic range >36dB
Green LED indicator on front panel

Metal loss correction

0 to 4.5dB/octave
Recessed control on front panel


Natural convection


128mm x 74mm x 35mm