+33 (0) 9 81 24 00 06 contact@opus-technologies.fr



The Opus Technologies LD1.0 is the small model of the single output magnetic loop amplifier range. Continuous 5Arms output current capable and all the necessary functionalities (AGC, MLC, etc.) ensure the installation of 250m² room.

The LD1.0 incorporate a hight-efficieny class D amplifier that guarantees maximum power for small and medium-sized rooms. The device have 3 inputs: 2 switchable line or microphone and a priority 100V.

The amplifier incorporates a fault synthesis that controls continuously the loop and the amplifier. The information is visible on the front and can be deported thanks to a simple contact.

The LD1.0 proven technology and quality of manufacturing allow us to offer a 5 years warranty.

  • Class D amplifier
  • Ultra compact design
  • Total efficiency up to 92%
  • Fanless convection
  • Hight output voltage up to 48Vpk
  • Automatic gain control
  • Metal loss correction
  • Wall rounting attachment
  • Continuous loop monitoring with NO-NC relay
  • 5 years warranty
Coverage 250 m² (10*25 m²)
Operating temperature 0 to +45°C
Storage temperature -30 to +70°C
Audio inputs 3 inputs: x2 line/microphone, x1 100V
Connector type Phoenix and/or Combo Neutrik
Phantom supply 12V 2mA
Sensitivity -50dB microphone, +40dB 100V, -10dB line
Priority 100V input, INPUT 1
Type Integrated
Voltage 115/230V (automatic)
50/60 Hz
Nominal power consumption at 1 Ohm 25 W
Maximum input power <250VA
Consumption at rest on connected loop 9W at 230V AC, 1 loop of 1 Ohm connected, at ambient temperature after 30 minutes of stabilization
THD <0,5% @1ohm / 1KHz / nominal current
Automatic gain control AGC optimized for speech
Dynamic > 36dB
Bandwidth 80 Hz to 9,5 kHz at -3 dB
Loop impedance 0,5Ω à 3Ω
Output voltage 34V rms(48V pK)
Peak current 8A pK
RMS current 5A rms
Slave output 0°or 90°phase shift
LED display «Power», «Protect», «Clip», «Loop»
Metal loss correction 0 to 3 dB per octave
Relay NO/NC fault relay
0,5A/125Vac, 1A/24VDC
HxLxD 42 x 200 x 215 mm
Weight 1,48 kg

Related products


4 allée Pierre-Gilles de Gennes, Technopole Montesquieu 

33650, Martillac, FRANCE

(+33) 09 81 24 00 06