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Proton AM-300

Stereo Integrated Amplifier (1987)

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Proton AM-300


Power output: 30 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.02%

Damping factor: 90

Input sensitivity: 0.2mV (MC), 2.5mV (MM), 150mV (line)

Signal to noise ratio: 75dB (MC), 90dB (MM), 100dB (line)

Output: 150mV (line)

Speaker load impedance: 4Ω to 16Ω

Dimensions: 420 x 75 x 288mm

Weight: 7kg

Year: 1987



haraldduell's picture

re: AM-300

Yes, I found the two small bulbs, now to figure their value to find replacements. Can anyone read the schematic?
Cheers, Harald

re: AM-300

Has anyone replaced the LCD display light in a Proton AM300?

haraldduell's picture

re: AM-300

Sorry to say I have not, but mine does not light up. Any idea where to look for the problem? Kind regards, Harald

re: AM-300

I've read there are 2 bulbs behind screen, so you should access them by opening the unit and removing face plate.
BTW, I have one too and think it's a really good sounding unit w/ a full bodied sound and powerful bass.

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