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Ebay amp....power supply? quality?
Ebay amp....power supply? quality?
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Old 6th May 2012, 09:29 AM   #1
overclockedpc is offline overclockedpc  United States
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Default Ebay amp....power supply? quality?

TDA7294 2.1 Power Amplifier Board 80Wx2+160W Subwoofer | eBay

So, I am considering buying this amp for a 2.1 system. Would this be a good budget buy?

Also, as far as power supply requirments.....what are my options for something low budget and simple that'll drive this?
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Old 6th May 2012, 10:13 AM   #2
Arty is offline Arty
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never seen that particular thing, but things i can allready see:
those pots are the dirth cheap ultra low quality ones, probably gona wear fast.
you need a quite large psu for this unit, looks expensive.
not to mention a large heatsink.
Allso the price seems way to cheap. 3 IC, the pots, caps, board.. I would be intrested in the reason behind the low price.
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Old 6th May 2012, 10:36 AM   #3
Alvis is offline Alvis
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Save your money dude.

Just look at the capacitors, it appears that Rubycon now makes caps by hand. <Sarcasm.
(They are all different, they have that paper disc to cover the top, very poor fakes.)
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Old 6th May 2012, 12:18 PM   #4
KatieandDad is offline KatieandDad  United Kingdom
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I tend to agree. It seems too cheap to be true.

Having said that It might be a good starting block. If the caps are duds they may still work and, in any case, could be easilly swapped with better.

The pots are really crap. When they fail it wouldn't be impossible to substitute them for better too (you might have to mount replacements remotely though).

All said and done. The PCB may be reasonable with just poor components inserted.
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Old 6th May 2012, 01:36 PM   #5
johnr66 is offline johnr66  United States
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Quote:
Originally Posted by Arty View Post
Also the price seems way to cheap. 3 IC, the pots, caps, board.. I would be interested in the reason behind the low price.
Because the parts are fakes. I often buy ICs from China just to see what they are putting out. More often than not, they are counterfeit parts.

They don't look like the real parts I get from DigiKey and they also test out to be inferior electrically. I refuse to buy these cheap kits off eBay.
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Old 6th May 2012, 06:26 PM   #6
pacificblue is offline pacificblue  Germany
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Wima stopped producing MKC capacitors ten or eleven years ago. If the input caps are not fake, they are at least extremely old.
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Old 6th May 2012, 07:37 PM   #7
AudioSan is offline AudioSan  Norway
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you can get does caps everywere. mouser, farnell, RS.
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Old 6th May 2012, 10:09 PM   #8
overclockedpc is offline overclockedpc  United States
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I've asked the seller to send information on the specific components and photos....sometimes on eBay, what you see, isn't EXACTLY what you get.
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Old 6th May 2012, 10:22 PM   #9
vacuphile is online now vacuphile  Netherlands
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Seems like a lot of fun for 33 USD, and on top of it there is the promise of 100% Satifiation Service. I think I'll be ordering one,

vac
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Old 6th May 2012, 10:38 PM   #10
vacuphile is online now vacuphile  Netherlands
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Just tried to order but they don't ship to the Netherlands, apparently.
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