TDA7377 vs TDA7297

[spaceman5]

Hi


Some time ago I asked about a Class AB Amplifier that is DC Powered,
and was recommended to try the "lunch money" TDA7297.


Today I saw the TDA7377 which is also Class AB, and is also DC Powered

TDA7377 Car Audio Stereo Amplifier Board 2*30W Class AB Dual-channel Amp | eBay


So I wonder, what is the difference between these 2?

Any reason to prefer one of them, in terms of sound?


Thank you

 

[FauxFrench]

TDA7377 has less distortion than TDA7297. TDA7297 is a plain stereo amplifier IC while TDA7377 offers 4 channels that may in used in stereo BTL coupling.
Sound-wise, TDA7377 should be best.
Both are cheap.

 

[spaceman5]

I see.
Thank you.

Amazing how options never end!

 

[abraxalito]

TDA8947 is another 4 channel chipamp. I've built amps with it and it can sound great given enough decoupling. It has a higher maximum voltage rating (24V) than TDA7377 (18V). Oh did I mention its also extremely cheap?

Here's an example application with it - switched-mode powered amp for about $5 : ???????50W???????? TDA8947?????????-???

 

[jankanda]

yeah I know - Old treath, but I just want to say that I bought a tda7377 amp from China, and so far It sounds better than others I have tried...and first of all - no hum or hiss! Psu is a china-12v-5A. right now the input is an old iPhone 4S, maybee with low output, but its loud enough for me...Think I need a case for it

 

[chermann]

do not mount the heat sink https://www.amazon.de/DollaTek-TDA7...ÅMÅŽÕÑ&keywords=TDA7377&qid=1571166879&sr=8-1ike this

 

[jankanda]

do not mount the heat sink https://www.amazon.de/DollaTek-TDA7...ÅMÅŽÕÑ&keywords=TDA7377&qid=1571166879&sr=8-1ike this

- well well ...if it works why not

 

[grappay]

TDA7377/9 pcb for 2 channel output