Ampetronic LOOPWORKSR1

Ampetronic LOOPWORKSR1. Loopworks Receiver R1 is a high quality audio induction loop receiver.


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SKU: LOOPWORKS-R1 Category: Tag:


The Ampetronic LOOPWORKSR1 is the Ampetronic Loopworks Receiver R1. It’s a high quality audio induction loop receiver with a vertically mounted pick up coil designed to be used in conjunction with the Loopworks Measure iOS App. The Loopworks Measure App and R1 Receiver together become the most accurate, dedicated field strength meter (FSM) available.


  • Calibration performed using uP device, which is not operational during measurement
  • Frequency response (?0.25 dB 50Hz to 8kHz), app brick wall filter beyond 10kHz
  • RMS detection with 125ms (F) integration time constant provided by host device and App
  • Power supply dependent on operation mode: either energy harvested host device audio output or derived from host device mic bias
  • Assessment of any system to IEC60118-4:2014
  • 1 year warranty.


Magnetic field strength measurement

Coil orientation Vertical when receiver held upright
Reference level 400mA/m (In field strength mode)
Frequency response 50Hz to 8kHz ±0.25dB
40Hz to 10kHz ±0.5dB
30Hz to 15kHz ±3dB
Gain stability Better than ±0.25dB over all conditions


Audio inputs 3.5mm 4-pole jack plug for connection to Apple device
3.5mm 3-pole jack socket for monitoring with stereo headphones (mono only)

Power: Calibration Test

Calibration Power < 100mW

Power: Measurement

Measurement Power < 1mW


Dimensions 52.0 x 27.5 x 9.5mm (R1 receiver only)
Weight 10g
Operating temperature range -10 to +45°C
Storage temperature range -20 to +75°C