By using a powerful 100% digital Sony® S-Master® amplifier and DSP (Digital Signal Processing) technology, realistic surround sound can be generated from just two front speakers. Unlike other "virtual surround" technologies, rear sound is generated from the front two speakers using sophisticated digital sound processing and does not need to be bounced off of side walls. No matter what the size or shape of the room or what's on the wall, it's possible to hear sounds from behind you without needing to place speakers behind you.
This is from Sonystyle.com
Basically in order to create surround sound in a two or three speaker sound bar, or to create clearer sound in a 5.1 or 7.1 setup; The sounds are digitally ordered and separated in order to both create distinct sound effects, instrumentation, or dialogue. There is no analogue conversion like in most systems, so the full complexity of the sound can be preserved.
The classic AM transmitter layout is a master oscillator, followed by a "pen", or penultimate amplifier, followed by a PA or power amplifier. The master oscillator, which is probably crystal controlled, generates the carrier frequency.
An oscillator that establishes the carrier frequency of the output of an amplifier or transmitter.Source : Answers.com
Darlington amplifier has more gain when compared to cascade amplifier .
The easiest way would be to add another potentiometer (of the same rating) in series with the master volume control.
1.differential amplifier 2.operational amplifier 3.instrumentation amplifier 4.chopper amplifier 5.isolation amplier
current series feedback amplifier=series parallel feedback amplifier or voltage to current amplifier,or TRANS CONDUCTANCE AMPLIFIER.
Selective amplifier is an RF amplifier which selects particular frequency and amplifier so it can operate at fixed frequency.
A voltage amplifier does not have to supply significant current bur a power amplifier does.
In audio look at an amplifier. It will be always a voltage amplifier.
How to apply the amplifier to my expedition
what is a mosfet amplifier
A transistor does not act as an amplifier. It is used as a component in an amplifier circuit.