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TDA8954 based amp - any opinions
TDA8954 based amp - any opinions
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Old 15th January 2020, 01:24 PM   #1
john65b is offline john65b  United States
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Default TDA8954 based amp - any opinions

OK, so "acquired" what I call a "Boutique" amp (somewhat expensive - $2200 new - name withheld) that surprised me on how good it sounded. Its been in my main system for a few weeks and continues to impress... running balanced from my Melos SHA Gold preamp (6922 based pre).

I got a little tipsy the other night (yup, Guinness) and decided to look and see what powers this amp - expecting an Icepower or Ncore, or some new Class D stuff - so after removing the smallish heatsink, I see a single Class D TDA8954J (thru hole) chip. Now this amp with single ship can do 2 x single ended input, 2 x balanced input or bridged mono balanced input. I am running 2 x balanced.

Not really familiar with it (more familiar with Hypex, Icepower, Tripath, etc) and these TDA8954 based modules are all over ebay for dirt cheap ($13 / channel shipped from China??) and just reading up on datasheets....

Anyway, (while still tipsy) I bought a pair of these modules off ebay - each module has two TDA8954TH (SMD) and will play around with them when received.

Anyone familiar with these? They have been implemented in at least one high end amp maker...
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Old 16th January 2020, 01:09 AM   #2
ubergeeknz is offline ubergeeknz  New Zealand
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Why hide the identity of your amp?
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Old 16th January 2020, 02:30 AM   #3
john65b is offline john65b  United States
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Don't want to have an issue with Intellectual property...unless site moderator says ok...

Its one of these "Audio Jewelry" companies...
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Old 16th January 2020, 02:59 AM   #4
Mark Tillotson is online now Mark Tillotson
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Quote:
Originally Posted by john65b View Post
I see a single Class D TDA8954J (thru hole) chip. Now this amp with single ship can do 2 x single ended input, 2 x balanced input or bridged mono balanced input. I am running 2 x balanced.
Datasheet says 0.03% THD, so pretty good for class D, not SotA, but pretty good.

Quote:

Not really familiar with it (more familiar with Hypex, Icepower, Tripath, etc) and these TDA8954 based modules are all over ebay for dirt cheap ($13 / channel shipped from China??) and just reading up on datasheets....
$13 is a rather a ripoff, Farnell have the bare chips at about 6 single, 4 in quantity, knows if the eBay modules are upto spec.


[ On second thoughts they are 210W, so the inductors will be expensive, so not a ripoff - but I wouldn't expect the inductors to be quite big enough on an eBay module - definitely scope for DIY version ]

Last edited by Mark Tillotson; 16th January 2020 at 03:01 AM.
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Old 16th January 2020, 03:06 AM   #5
john65b is offline john65b  United States
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Quote:
$13 is a rather a ripoff, Farnell have the bare chips at about 6 single, 4 in quantity, knows if the eBay modules are upto spec.
By $13USD, I mean entire module, including power supply - you just add transformer and input / output wires...

US TDA8954TH 420W High Power Mono Digital Audio Amplifier Board Core BTL Class | eBay
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