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Which TPA3255 amp do you recommend?

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datrumole

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I have switched from ne5532 to lm4562 in Aiyima a04 tpa3251. The sound is a bit better with lm4562. Its a fantastic amplifier.

Right now there is people comparing Aiyima a04 tpa 3251 with a Rotel ra1592 and a Hypex nc400 amplifier. Its the ”new”version of Aiyima a04 with the green card .
The Aiyima a04 with opa2604 is sounding better than Rotel ra1592 , better bass and more clear sound, and theres no difference against Hypex nc400.
Read more here:
https://www.faktiskt.io/phpBB3/viewtopic.php?f=9&t=70688&start=360


green board? does it have a revision?

i recently ordered a A04, i have the black board, 'TILEAR HD325X Rev:2.1' as the markings
 

AIYIMA

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green board? does it have a revision?

i recently ordered a A04, i have the black board, 'TILEAR HD325X Rev:2.1' as the markings

There is no difference between black and green, but the color is different.
 

daniboun

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FOR TPA3251 and for information :

There are two version of Tilear Rev 2.1 (black and green PCB) + 1 different version

Black PCB picture 1= have best caps (3000uf ELNA / ELNA Red-robe )
Green PCB picture 2 = have good caps (3000uf ELNA , no more ELNA Red-robe)
Last version picture 3 = changed the main caps from 3000uf ELNA to 2200uf ARC Audio, no more ELNA Red-robe

Production quality deteriorated and AIYIMA replaced quality components with low-end components


TPA3251.jpg

849508d1591132731-tpa3251d2-thumbnail_-1-_-_edited_-3-jpg

DDOwxEc.jpg
 
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daniboun

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daniboun

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A800

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Looks good.
 

daniboun

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As per reminder,

you can see here the importance of the choice of inductors relating to the TPA325X

inductor_cmp.png
 

AIYIMA

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FOR TPA3251 and for information :

There are two version of Tilear Rev 2.1 (black and green PCB) + 1 different version

Black PCB picture 1= have best caps (3000uf ELNA / ELNA Red-robe )
Green PCB picture 2 = have good caps (3000uf ELNA , no more ELNA Red-robe)
Last version picture 3 = changed the main caps from 3000uf ELNA to 2200uf ARC Audio, no more ELNA Red-robe

Production quality deteriorated and AIYIMA replaced quality components with low-end components


TPA3251.jpg

849508d1591132731-tpa3251d2-thumbnail_-1-_-_edited_-3-jpg

DDOwxEc.jpg

I have checked it again.

Our engineer said that the previous blackboard was our original A04, but because the 3000uf ELNA capacitor was out of stock, we replaced other capacitors, but there was not much difference in performance.

We will launch upgraded versions of A04 and A07 later, we will use better capacitors and other components.
 

AIYIMA

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nerone

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@AIYIMA
So whoever bought Aiyima A04 / A07 first will have to upgrade it?
In this case, you could indicate the price of the components to be replaced including shipping for Italy.
Thank you
 

datrumole

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FOR TPA3251 and for information :

There are two version of Tilear Rev 2.1 (black and green PCB) + 1 different version

Black PCB picture 1= have best caps (3000uf ELNA / ELNA Red-robe )
Green PCB picture 2 = have good caps (3000uf ELNA , no more ELNA Red-robe)
Last version picture 3 = changed the main caps from 3000uf ELNA to 2200uf ARC Audio, no more ELNA Red-robe

Production quality deteriorated and AIYIMA replaced quality components with low-end components

sweet, got the top one :)
 

AIYIMA

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@AIYIMA
So whoever bought Aiyima A04 / A07 first will have to upgrade it?
In this case, you could indicate the price of the components to be replaced including shipping for Italy.
Thank you

Can you tell me which components do you need replaced?
 

AIYIMA

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giangi90

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Yes, I think it's the same, on aliexpress I had to pay 50 Euros for customs to ship it to Italy, So on this site you showed me I think I don't pay customs and it costs me less right? Because I had thought about buying another amplifier the same.

Hello @robertospeed , I’m Italian too, I wanted to know which carrier made the shipment from China, I knew that if you do the "slow" shipment you are less likely to pay customs fees. Thank you!
(italiano: Ciao @robertospeed, volevo sapere come ti sei fatto spedire la merce, ho letto su alcuni forum che con la spedizione più lenta era meno probabile la richiesta di pagamento delle tasse doganali. Ciao!
 
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