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Best audio amplifier for a 7.1 audio amplifier

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asherlock

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Hi,
Im looking into designing a 7.1 audio amplifier, and i was wondering what the best budget vs quality audio amplifier IC would be. I'm looking for around about 30w of power and I plan to use seperate ICs for each stereo group unless there is a specific 7.1 ic that fits this purpose.
TIA.
 
Hi.
You have to consider that a group of stereo, or seperate, amplifiers, is still just a group of separate amplifiers.

If it's for such a PC that has multiple separate signals for a multi-channel amp, fair enough - but if you want it for any other kind of "surround sound" system such as feeding it with Dolby Digital , AC3, DTS, Pro-logic etc., it will not do anything useful.

For anything like that you are far better off buying a secondhand home theatre amp, that has all the surround decode capability already built in.
eg. The Sony STR-DA2400ES is one of the best 7.1 amps in its class and you can often get them very cheaply on ebay as the video part only supports 1080, not 4K - which is irrelevant for audio use! They have many facilities which would be technically or financially impractical in a DIY system of similar overall price.


For amp ICs, the TDA7293 looks reasonable. You can also buy stereo modules using those on ebay.

**broken link removed**

(They are rather more than 30W, but running them at lower powers reduces heat dissipation and improves quality).
 
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