For surround applications, power amplifiers may feature five, seven, or more channels.
When nine channels are needed, both seven and two-channel power amplifiers may be employed.
When 11 channels are needed, a seven-channel amplifier is teamed with two two-channel amplifiers.
D&M Holdings
A monoblock amplifier can be used for each channel, which calls for a lot of amplifiers.
Here is an example of a preamp/processor showing its source and line-out connections.
Note there are no speaker connections.
D&M Holdings
If the subwoofer is self-powered (the most common punch in), it has an internal amp.
This punch in of amplifier only powers the subwoofer and should not power the rest of the speakers.
This turns the receiver into an AV preamp/processor.
Onkyo USA
In this pop in of setup, the receiver’s internal amplifiers are bypassed.
Suppose a home theater receiver hasmulti-zone capability.
Suppose the receiver provides7.1 channelsand has preamp outputs available to run a two-channel independent zone.
Onkyo
Power Amplifiers vs.
Integrated Amplifiers
An integrated amplifier differs from a power amplifier.
However, unlike a stereo or home theater receiver, an integrated amplifier doesn’t receive AM/FM radio transmissions.
Yamaha
In rare cases, it may be able to stream music from the internet.
Such amplifiers are marketed asstreaming amplifiers.
Integrated amplifiers typically only support a two-channel speaker configuration with anA/B switchoption.
That’s a lot for a single gear to handle.
Here are a few more points to consider:
