AM Radio Audio Amplifier – AMRA-01

AMRA-01 is a low power audio amplifier module designed with fixed gain for AM, crystal radio sets or any radio amplification. It is designed to match first amplification stage after demodulation. Might be used as audio amplification module or separate audio amplifier or as external amplified speaker. ON/OFF switch with volume control, on board. ON/OFF LED on board. Pinheaders or 3.5mm stereo jacks for singal input and audio output. Reverse polarity protection. 12…15Vdc operation. Its ergonomic design makes it suitable for almost any radio application in the lab during development of AF stages etc. Feel free to use it as you wish, you will be satisfied with its robustness.

Technical specifications:

– fixed gain: 200

– ON/OFF switch with volume control

– 3mm status LED (on/off)

– 3.5mm on board stereo jack for AF input (pink) and AF output (green)

– RPP – reverse polarity protection

– recommended speaker: 8Ω / 0.5…3W

– 2.54mm pin headers for AF input / output (if jacks are not used)

– output audio power: approx. 330mW

– dimmensions: 85x25mm

– weight: 20g