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<blockquote data-quote="thch" data-source="post: 1289521" data-attributes="member: 562032">car audio amps, 2 inputs, 1 output -- 1 DC voltage input, 1 AC voltage input, 1 AC Voltage output.DC voltage in -- SMPS converts the DC into AC then back to DC (at a higher voltage) -- Amplifier itself takes this high voltage and the input from the RCAs and boosts the signal&#039;s voltage.so amps in car&#039;s are DC-AC-DC-AC converters...in you case, its this Switch Mode Power Supply, or DC-DC converter in the amp that allows the amp to put out higher voltages then the 12V DC input.&nbsp; energy is conserved though.&nbsp; if the output is 120V, 1A, then the input will be at least 12V, 10A*.If you are very interested in this you can read about how these things work.&nbsp; typically you will store energy in either a capacitor or inductor, then release the energy quickly.&nbsp; an example which is easy understand, but not really useful, is charging 10 capacitors to 12V.&nbsp; now wire all 12 in series.&nbsp; you now have 120V from&nbsp; 12V.&nbsp; all that needs to be done is build electrical switches to alternate the capacitors from the charging (parallel) and discharging (series) cycles.&nbsp; typically these cycles happen 30,000 times or more per second.*this is conservation of power, which isn&#039;t a law, but if power is conserved energy will be conserved.&nbsp; an example of how they are different would be thowing a ball at a window.&nbsp; energy is put into the ball then released at a later time.&nbsp; as the ball transfers energy to the window you are not transfering any energy to the ball.</blockquote>

[QUOTE="thch, post: 1289521, member: 562032"] car audio amps, 2 inputs, 1 output -- 1 DC voltage input, 1 AC voltage input, 1 AC Voltage output. DC voltage in -- SMPS converts the DC into AC then back to DC (at a higher voltage) -- Amplifier itself takes this high voltage and the input from the RCAs and boosts the signal's voltage. so amps in car's are DC-AC-DC-AC converters... in you case, its this Switch Mode Power Supply, or DC-DC converter in the amp that allows the amp to put out higher voltages then the 12V DC input. energy is conserved though. if the output is 120V, 1A, then the input will be at least 12V, 10A*. If you are very interested in this you can read about how these things work. typically you will store energy in either a capacitor or inductor, then release the energy quickly. an example which is easy understand, but not really useful, is charging 10 capacitors to 12V. now wire all 12 in series. you now have 120V from 12V. all that needs to be done is build electrical switches to alternate the capacitors from the charging (parallel) and discharging (series) cycles. typically these cycles happen 30,000 times or more per second. *this is conservation of power, which isn't a law, but if power is conserved energy will be conserved. an example of how they are different would be thowing a ball at a window. energy is put into the ball then released at a later time. as the ball transfers energy to the window you are not transfering any energy to the ball. [/QUOTE]

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