Summary: I purchased a Pyle Pro PT210 120 - Watt microphone PA mono amplifier from Amazon in November 2013. It developed a buzzing sound after a few hours use. The sound was not related to the microphone inputs as I removed all inputs and the sound did not change. The sound started as a low pitched hum, and then rose in pitch and loudness over subsequent hours.
Summary: I use these amplifiers to power my dining room music solutions in my restaurants and they are more than adequate for that purpose this unit is virtually identical to the Pyramid PA-205 as they have the same manufacturer. That said I always just order whichever is cheaper. These are much cheaper and offer much better frequency response than the much more expensive ones I used to buy from Muzak or my Alarm Co.
Summary: I have not been pleased at all with this amplifier. I had to return 2 of them. The first was dead on arrival. I could see the heat sink and power transistors were lose from the circuit board. The second unit had a loud high pitched noise in the speakers even with nothing attached to the amplifier.
Summary: I bought this amp to power an arena for a County Fair. I went to set it up, and just barely heard the mic and the source with a bunch of fuzz and popping and wonderful pleasant electronics burning smell. I picked up the amp to get a better smell and heard something moving around in inside. I turned it over and a screw was missing. I figured it must have shorted out on the case or something damaged. So I returned it and amazon sent me a new one.
Summary: Our amplifier failed soon after we installed it. The main board has a large heat sink for the power transistors that is only held to the board by the six legs of the two power transistors that are soldered to extremely thin foil leads on the board. The weight of the heat sink broke the power transistors free of the board. Also, even before it failed it was a very noisy amp.
Summary: This amp says it is 120 watts, and the fine print says it's 40 watts, but in realaty it is about 4 watts. I connected this amp up to one speaker and a microphone and had to turn full volume to just get enough sound to even hear it. A piece of sh** and Pyle should be ashamed to put their name on it and Amazon should pull the Pyle 120 off their shelves.