Monoblock Amplifier 300W




  • 1x320Wrms/4ohm @ 1% THD
  • Residual noise <50uVrms unweighted
  • 20Hz - 35KHz +/- 0.5dB ( -3dB @ 65kHz )
  • THD+N <0,05% up to 300Wrms/4ohm @ 6,67kHz.
  • +/- supply outputs for front end /crossover
  • 8V stand by output for signal sensing circuit
  • <1W stand by mode when delivering 150mW to signal sensing circuitry
  • Over current protection
  • Over temperature protection
  • Over voltage protection
  • 115/230VAC - jumper selectable
  • Meets CISPR22 on conducted and radiated emissions


Quantity 1+ 2+ 5+ 10+
gbp 116.82 114.23 109.03 106.44

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Full Description

The ALC0300 comes as an open frame unit making it easy to integrate into a wide range of product from active speakers through to home audio products.

The module is based on a phase shift modulated topology with advanced protection circuitry. This topology shows very low distortion figures and because of its simplicity and robustness the finished products are very attractive both when it comes to functionality and cost.

The power supply is inherently designed for ultra low noise making it well suited to the demands of audio and consumer electronic products. It also delivers +/- supplies to an external PCB, for example a cross over board or pre amplifier board in a dual mono integrated amplifier.

The built in over current protection has two modes. During transients into the current limit threshold it allows constant output current but if this condition persists it goes into burst mode. This guarantees that the amplifier does not create audio holes during heavy listening but still effectively protects it during short circuiting.

The thermal protection contains a sensor connected to the very tab of one of the output devices giving a very fast detection and shut down should over-load occur.

A connector kit for the ALC0300 is available here

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 4 Ohms8 Ohms 
Output Power1x300W1x150W 
Gain27.9dB typ 
Switching Freq.390kHz typ 
Idle Power11W typ 
Bandwidth65kHz typ 
Aux supply V+/-9.2V min 
Aux supply I+/-300mA max 
Efficiency84% typ 


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