Best audio amplifier for a 7.1 audio amplifier

[asherlock]

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.

 

[rjenkinsgb]

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.

Home review

Sony's STR-DA2400ES AV receiver was delayed while it was fixed to work with Sky+ HD, but the finished article was well worth the wait

www.whathifi.com

Str-Da2400es for sale | eBay

Find great deals on eBay for Str-Da2400es. Shop with confidence.

www.ebay.co.uk

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

https://www.st.com/resource/en/datasheet/tda7293.pdf

**broken link removed**

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

 

[asherlock]

Thanks mate,
I will have a look

 

[Ylli]

The LM3886 is also often recommended. https://www.circuitbasics.com/design-hi-fi-audio-amplifier-lm3886/