That is usually an amplifier for 5.1 surround sound signals. Just a little extra info: With 5 channels you'll have 2 for the front left and right, 2 for the rear left and right with 1 being the center channel speaker. Most often seen in home theaters with a sub woofer out but increasingly seen in cars.
It could be a 2 channel stereo amplifier.
A mono amplifier. You need two for stereo.
Yes you can bridge this amplifier to a 2 channel at 4 ohm per channel for 200 watts out of each channel.
go ask a mechanic idiot
That is usually an amplifier for 5.1 surround sound signals. Just a little extra info: With 5 channels you'll have 2 for the front left and right, 2 for the rear left and right with 1 being the center channel speaker. Most often seen in home theaters with a sub woofer out but increasingly seen in cars.
2
The Kicker 4-channel Car amp has the Kicker logo on it.
a channel refers to the speakers or subs. for example a 2 channel amp can power 2 subs or speakers. a 4 channel will power 4.
Connecting speaker leads to both right outputs, A&B, will only play the right channel of the sound (in mono) when both pairs of speakers, A and B are turned on. This won't damage the amplifier or speakers, but you won't be listening in stereo.
90 watts X 4 channel output
You can determine the impedance (ohms) of a car amplifier by checking the specifications provided by the manufacturer. Look for information on the minimum stable impedance the amplifier can handle per channel. If it can handle 2 ohms per channel, then it is a 2-ohm amplifier. If it can handle 4 ohms per channel, then it is a 4-ohm amplifier. Typically, this information is found in the technical specifications or manual of the amplifier.
1.differential amplifier 2.operational amplifier 3.instrumentation amplifier 4.chopper amplifier 5.isolation amplier