While tube amplifiers are becoming increasingly popular among audiophiles, Solid State amplifiers still have the lion's share of industry place because of their smaller size, weight, heat output, and low maintenance.

Solid State amplifiers come in various iterations.

A Preamplifier is a factor that takes all the signals from your various sources (MP3 player, AM/FM/Satellite tuner, TV, DVD, CD, turntable, etc) and selects between those, controls the amount, and performs any tone shaping.

The Power Amplifier is the factor that supplies the Muscle 環繞擴大機.The larger the energy in Watts in the energy amplifier, the louder, and cleaner, all else equal, the sound you will hear.

To keep cost and/or overall space down, many audio enthusiasts combine the Preamplifier and Power Amplifier into one chassis, called an Integrated Amplifier. If your radio section may also be inside, we now have a Receiver.

Solid State Amplifiers come in a variety of Channels, each of these assigned to power one speaker. A normal 2-Channel stereo amplifier is made for music listening with two speakers.

For Home Theater use, a 5 channel or 7channel amplifier will provide you with capacity to the Left, Right, Center, and two or four Surround speakers all in a single chassis.

Ultimately, though, you merely go out of room in the amplifier chassis!

Fitting five to seven channels of Solid State Amplification into one amplifier is no hassle, with around about 200 Watts per channel...enough for a sizable proportion of users.

For anyone seeking to obtain all the dynamic range possible from their music and movies, however, a lot more than 200 Watts per channel may be desirable.

The challenges now are size and weight. Engineering seven very high-power high-quality amplifiers in a single practical amplifier is very difficult. Locating a area for this sort of huge, heavy beast is likely to be even harder!

For anyone uncompromising listeners, employing a suite of individual Monoblock single-channel Solid State Amplifiers, with one for every speaker, will be the ultimate choice. Just stack them up, each powering one speaker, to accomplish any total power level desired.

Additionally, having individual amplifiers for every speaker does away with any undesirable sound-bleed (crosstalk) between amplifiers channels completely, and allows unlimited growth for future needs.

Most Solid-State amplifiers are Direct Coupled, and thus the transistors are connected right to the speakers, therefore it becomes essential to match the amplifier to your speakers.

Always ensure that the Impedance of your speakers (it should say something similar to 4-Ohms on a draw on the trunk of the cabinet) matches with the Output Impedances Allowed by the amplifier manufacturer.

If the amplifier has Output Transformers, it might have connections for speakers of varied impedances, eliminating the necessity to concern yourself with any amplifier / loudspeaker impedance compatibility issues.